EPA Map of Radon Zones and Supplemental Information

On this page:

Information About EPA Map of Radon Zones
Data and Information About Regional, State and Tribal Radon Programs
Supplemental Information

Information About EPA Map of Radon Zones

The Map of Radon Zones was developed in 1993 to identify areas of the U.S. with the greatest potential for elevated indoor radon levels based on indoor radon measurement data, geology, aerial radioactivity, soil parameters, and foundation types.

This map should not be used to determine if individual homes need to be tested. No matter where you live, test your home for radon—it’s easy and inexpensive. Fix your home if your radon level is 4 picocuries per liter (pCi/L) (150 becquerels per cubic meter (Bq/m³))or higher. Consider fixing if your level is between 2 and 4 pCi/L (75 - 150 becquerels per cubic meter (Bq/m³)). The radon action level should comply with the guidance of the country, state, or other local jurisdiction of authority where the test is being conducted.

EPA's Map of Radon Zones can be supplemented with available state-developed or other data to further understand the radon potential for a specific area. Additional radon testing data may be accessed through the CDC Environmental Health Tracking Network, an online source for local, timely data from Tracking Program-funded states and six national radon testing laboratories.

Data and Information About Regional, State and Tribal Radon Programs

Click on a region for information on radon specific to your EPA Regional Office, State or Tribal program. Then click on your state to find your state radon contact and information:

Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont
Region 2: New Jersey, New York, Puerto Rico, US Virgin Islands
Region 3: Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West Virginia
Region 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee
Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin
Region 6: Arkansas, Louisiana, New Mexico, Oklahoma, Texas
Region 7: Iowa, Kansas, Missouri, Nebraska
Region 8: Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming
Region 9: Arizona, California, Guam, Hawaii, Nevada
Region 10 Alaska, Idaho, Oregon, Washington

Region 1 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

Connecticut

Resource Title	State Information
IAQ State Program	CT State Department of Public Health
Program Website	CT State Radon Website
Phone	860-509-7300
Fax Number
State Resources	Alessia Frasco (alessia.frasco@ct.gov) CT.gov /radon 410 Capitol Avenue MS#12RAD P.O. Box 340308 Hartford, Connecticut 06134-0308 Office Hours: 8:30AM- 4:30PM (M-F)
Radon Data	CT Zone Map from EPA(PDF) Indoor Radon Potential Map of CT (PDF)
Regional Resources	Region 1 Indoor Air Quality IED's Tribal Resources Dan Burke (Burke.Dan@epa.gov); 617-918-1285 Madeline Isenberg (Isenberg.Madeline@epa.gov); 617-918-1271 Patrick Bird (Bird.Patrick@epa.gov); 617-918-1287

Maine

Resource Title	State Information
IAQ State Program	ME Division of Environmental Health, Radiation Control Program
Program Website	ME State Radon Website
Phone	207-287-5676
Fax Number	800-232-0842 (in Maine only)
State Resources	Jay Hyland (Jay.Hyland@maine.gov) maine.gov ME Dept. of Health and Human Services ME Center for Disease Control and Prevention (Formerly the Bureau of Health) TTY: 800-606-0215
Radon Data	ME Zone Map from EPA
Regional Resources	Region 1 Indoor Air Quality IED's Tribal Resources Dan Burke (Burke.Dan@epa.gov); 617-918-1285 Madeline Isenberg (Isenberg.Madeline@epa.gov); 617-918-1271 Patrick Bird (Bird.Patrick@epa.gov); 617-918-1287

Massachusetts

Resource Title	State Information
IAQ State Program	MA Dept. of Public Health, Radiation Control Program
Program Website	MA State Radon Website
Phone	413-586-7525
Fax Number	800-723-6695 (in Massachusetts only)
State Resources	Jennifer Lajoie(Jennifer.Lajoie@state.ma.us) mass.gov MA Department of Public Health Phone: 617-624-6000 TTY: 617-624-6001
Radon Data	MA Zone Map from EPA MA Public Health Data Explorer
Regional Resources	Region 1 Indoor Air Quality IED's Tribal Resources Dan Burke (Burke.Dan@epa.gov); 617-918-1285 Madeline Isenberg (Isenberg.Madeline@epa.gov); 617-918-1271 Patrick Bird (Bird.Patrick@epa.gov); 617-918-1287

New Hampshire

Resource Title	State Information
IAQ State Program	NH Department of Health and Human Services
Program Website	NH State Radon Website
Phone	603-271-1708
Fax Number
State Resources	Mary Butow (mary.e.butow @dhhs.nh.gov) nh.gov
Radon Data	NH Zone Map from EPA NH Public Health Data Explorer
Regional Resources	Region 1 Indoor Air Quality IED's Tribal Resources Dan Burke (Burke.Dan@epa.gov); 617-918-1285 Madeline Isenberg (Isenberg.Madeline@epa.gov); 617-918-1271 Patrick Bird (Bird.Patrick@epa.gov); 617-918-1287

Rhode Island

Resource Title	State Information
IAQ State Program	RI Department of Health, Division of Community, Family Health & Equity, Healthy Homes and Environment Team
Program Website	RI State Radon Website
Phone	401-222-7756
Fax Number	401-222-7784
State Resources	Bonnie Cassani Brandt (Bonnie.CassaniBrandt@health.ri.gov) RI Dept. of Health Phone: 401-222-2231 Fax: 401-222-654 TTY: 711-RIRelay
Radon Data	RI Zone Map from EPA RI's Map - Radon Data
Regional Resources	Region 1 Indoor Air Quality IED's Tribal Resources Dan Burke (Burke.Dan@epa.gov); 617-918-1285 Madeline Isenberg (Isenberg.Madeline@epa.gov); 617-918-1271 Patrick Bird (Bird.Patrick@epa.gov); 617-918-1287

Vermont

Resource Title	State Information
IAQ State Program	VT Radon Program
Program Website	VT State Radon Website
Phone	802-863-7220
Fax Number
State Resources	Michelle Thompson (michelle.e.thompson@vermont.gov) vermont.gov VT Department of Health Phone: 802-863-7200 In VT: 800-464-4343 Fax: 802-865-7754 / 800-439-8550 (in VT only) TTY/TDD: Dial 711 first
Radon Data	VT Zone Map from EPA VT Radon Risk Maps
Regional Resources	Region 1 Indoor Air Quality IED's Tribal Resources Dan Burke (Burke.Dan@epa.gov); 617-918-1285 Madeline Isenberg (Isenberg.Madeline@epa.gov); 617-918-1271 Patrick Bird (Bird.Patrick@epa.gov); 617-918-1287

Region 2 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

New Jersey | New York | Puerto Rico | US Virgin Islands

New Jersey

Resource Title	State Information
IAQ State Program	NJ Dept. of Environmental Protection, Radiation Protection & Release Protection Program
Program Website	NJ State Radon Website
Phone	609-984-5425
Fax Number
State Resources	Anita Kopera (Anita.Kopera@dep.state.nj.us) nj.gov NJ Dept. of Environmental Protection, Radon Section NJ Dept. of Environmental Protection Toll Free: 877-927-6337 (For New Jersey, New York, Pennsylvania and Delaware calling areas)
Radon Data	NJ Zone Map from EPA NJ Radon Zones State Tier Map RRNC Information
Regional Resources	Region 2; Indoor Air Quality IED's Tribal Resources Conrad Sherman (Sherman.Conrad@epa.gov) 212-637-3245

New York

Resource Title	State Information
IAQ State Program	NY State Department of Health, Radiological Health/Radon
Program Website	NY State Radon Website
Phone	518-402-7556
Fax Number
State Resources	Primary: Cynthia Costello Alternate: Christine Dobert NY Department of Health radon@health.ny.gov 800-458-1158
Radon Data	NY Zone Map from EPA NYS Tracking (EPHT): Radon Test Data, Maps and Statistics by County NY Open Data: Radon Tests by County
Regional Resources	Region 2; Indoor Air Quality IED's Tribal Resources Conrad Sherman (Sherman.Conrad@epa.gov) 212-637-3245

Puerto Rico

Resource Title	State Information
IAQ State Program	PR Dept. of Health, Radiological Health Division
Program Website
Phone	787-765-2929 ext. 3210
Fax Number	787-274-6829
State Resources	Raul Hernandez Doble, Director (rhernandez2@salud.pr.gov)
Radon Data	USGS Report (PDF)
Regional Resources	Region 2; Indoor Air Quality IED's Tribal Resources Conrad Sherman (Sherman.Conrad@epa.gov) 212-637-3245

Virgin Islands

Resource Title	State Information
IAQ State Program	Virgin Islands uses EPA Region 2 Radon Office
Program Website
Phone	EPA: 212-637-4013 VI Health: 340-718-1311, Ext. 3708
Fax Number
State Resources	None
Radon Data	None Available
Regional Resources	Region 2; Indoor Air Quality IED's Tribal Resources Conrad Sherman (Sherman.Conrad@epa.gov) 212-637-3245

Region 3 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

Delaware

Resource Title	State Information
IAQ State Program	DEHSS Division of Public Health, Office of Healthy Environments, Radon Program
Program Website	DE State Radon Website
Phone	302-744-4727
Fax Number	303-739-3839
State Resources	Amanda Lacklen (amanda.lacklen@delaware.gov) delaware.gov Delaware Division of Public Health 302-744-4700 888-459-2943 Fax: 302-739-3839 dhssinfo@state.de.us
Radon Data	DE Zone Map from EPA
Regional Resources	Region 3; Indoor Air Quality IED's Tribal Resources Michelle Moyer (moyer.michelle@epa.gov) 215-814-2098

District of Columbia

Resource Title	State Information
IAQ State Program	DC Department of Energy and the Environment
Program Website	DC State Radon Website
Phone	202-535-2600
Fax Number	202-481-3770
State Resources	Keith Keemer (keith.keemer@dc.gov) 202-535-2600 Free Radon Test Kit: Request Form 202-535-2302 District of Columbia, Department of Energy and Environment 202-535-2600 Department of Energy and Environment 202 535-2600
Radon Data	DC Radon Zone Map
Regional Resources	Region 3; Indoor Air Quality IED's Tribal Resources Michelle Moyer (moyer.michelle@epa.gov) 215-814-2098

Maryland

Resource Title	State Information
IAQ State Program	The MDE and MDH applied for the SIRG. The MDE and MDH will be responsible for the day to day activities of the grant. If you have questions about radon in MD, contact the number below. If you are a Montgomery County resident, please use the Montgomery County Resources below.
Program Website	Maryland Department of Health Help Line (1-866-703-3266) Maryland Department of the Environment Phone: 410-537-3193 Montgomery County Residents: Department of Environmental Protection Phone: 240-777-0311 DEP Email(askDEP@montgomerycountymd.gov) Montgomery County: Radon
Phone	Toll Free (inside MD): 866-703-3266 TTY: 800-735-2258
Fax Number	410-537-3198
State Resources	Abdurahman Ablimit ( abdurahman.ablimit1@maryland.com) Phone: 410-537-3193 Maryland Department of the Environment Phone: 410-537-3193 Maryland Department of Health Phone: 410-767-6712 maryland.gov The Division of Environmental Policy and Compliance DEP Email
Radon Data	MD Zone Map from EPA
Regional Resources	Region 3; Indoor Air Quality IED's Tribal Resources Michelle Moyer (moyer.michelle@epa.gov) 215-814-2098

Pennsylvania

Resource Title	State Information
IAQ State Program	PA Dept. of Environmental Protection, Bureau of Radiation Protection
Program Website	PA State Radon Website
Phone	717-783-3594
Fax Number	717-783-8965
State Resources	Bob Lewis(rolewis@pa.gov) PA Department of Environmental Protection pa.gov 800-237-2366 (Pennsylvania only)
Radon Data	PA Zone Map from EPA
Regional Resources	Region 3; Indoor Air Quality IED's Tribal Resources Michelle Moyer (moyer.michelle@epa.gov) 215-814-2098

Virginia

Resource Title	State Information
IAQ State Program	Virginia Department of Health, Office of Radiological Health
Program Website	VA State Radon Website
Phone	804-864-8161
Fax Number	804-864-8175
State Resources	Radon@vdh.virginia.gov Phone: 804-864-8161 Fax: 804-864-8165 Fairfax County Radon Page Virginia Department of Health (VDH) VDH List of Health Topics Office of Radiological Health Toll Free Hotline: 800-468-0138
Radon Data	VA Zone Map from EPA
Regional Resources	Region 3; Indoor Air Quality IED's Tribal Resources Michelle Moyer (moyer.michelle@epa.gov) 215-814-2098

West Virginia

Resource Title	State Information
IAQ State Program	WV Radiation, Toxics & Indoor Air Division
Program Website	WV State Radon Website
Phone	304-352-5039
Fax Number	304-558-0524
State Resources	Paul Ice (Paul.D.Ice@wv.gov) 304-352-5013 WV Office of Environmental Health Services Healthy People 2010 Initiative Local Health Departments by County/Area in West Virginia radon@wv.gov Cancer Control Plan (PDF) 800-922-1255 (Toll free in-state)
Radon Data	WV Zone Map from EPA
Regional Resources	Region 3; Indoor Air Quality IED's Tribal Resources Michelle Moyer (moyer.michelle@epa.gov) 215-814-2098

Region 4 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

Alabama

Resource Title	State Information
IAQ State Program	Alabama Department of Public Health Radiation Control
Program Website	AL State Radon Website
Phone	334-290-6244
Fax Number	334-285-9342
State Resources	Nick Swindall (john.swindall@adph.state.al.us) alabama.gov Ordering Radon Test Kits Alabama Department of Public Health: 800-582-1866
Radon Data	AL Zone Map from EPA Test Results by County
Regional Resources	Region 4; Indoor Air Quality IED's Tribal Resources Mary Reynolds (Reynolds.Mary@epa.gov) 404-562-8991

Florida

Resource Title	State Information
IAQ State Program	FL Department of Health, Division of Disease Control and Health Protection, Bureau of Environmental Health, Radon Program
Program Website	FL State Radon Website
Phone	850-245-4288
Fax Number	850-487-0864
State Resources	Michelle Dale (Michelle.Dale@flhealth.gov) The Official Portal of the State of Florida Florida Dept. of Health 850-245-4444 Fax: 850-922-9453 phtoxicology@flhealth.gov 800-543-8279
Radon Data	FL Zone Map from EPA
Regional Resources	Region 4; Indoor Air Quality IED's Tribal Resources Mary Reynolds (Reynolds.Mary@epa.gov) 404-562-8991

Georgia

Resource Title	State Information
IAQ State Program	University of Georgia
Program Website	GA State Radon Website
Phone	706-583-0602
Fax Number
State Resources	Pamela R. Turner (prturner@uga.edu) University of Georgia Extension Radon Education Program ugaradon@uga.edu UGA Extension 1-800-ASK-UGA1 (1-800-275-8421)
Radon Data	GA Zone Map from EPA
Regional Resources	Region 4; Indoor Air Quality IED's Tribal Resources Mary Reynolds (Reynolds.Mary@epa.gov) 404-562-8991

Kentucky

Resource Title	State Information
IAQ State Program
Program Website
Phone
Fax Number
State Resources	kentucky.gov Kentucky Board of Radon Safety
Radon Data	KY Zone Map from EPA
Regional Resources	Region 4; Indoor Air Quality IED's Tribal Resources Mary Reynolds (Reynolds.Mary@epa.gov) 404-562-8991

Mississippi

Resource Title	State Information
IAQ State Program
Program Website	MS State Radon Website
Phone
Fax Number
State Resources	Mississippi State Department of Health www.ms.gov/
Radon Data	MS Zone Map from EPA
Regional Resources	Region 4; Indoor Air Quality IED's Tribal Resources Mary Reynolds (Reynolds.Mary@epa.gov) 404-562-8991

North Carolina

Resource Title	State Information
IAQ State Program	NC NC Department of Health and Human Services, Radon Program
Program Website	NC State Radon Website
Phone	828-712-0972
Fax Number
State Resources	Phillip Gibson (Phillip.Gibson@dhhs.nc.gov) and Catherine Rosfjord (Catherine.Rosfjord@dhhs.nc.gov) ncgov.com
Radon Data	NC Zone Map from EPA
Regional Resources	Region 4; Indoor Air Quality IED's Tribal Resources Mary Reynolds (Reynolds.Mary@epa.gov) 404-562-8991

South Carolina

Resource Title	State Information
IAQ State Program	SC Department of Environmental Services
Program Website	SC State Radon Website
Phone	800-768-0362
Fax Number	803-898-4117
State Resources	radon@des.sc.gov
Radon Data	SC Zone Map from EPA
Regional Resources	Region 4; Indoor Air Quality IED's Tribal Resources Mary Reynolds (Reynolds.Mary@epa.gov) 404-562-8991

Tennessee

Resource Title	State Information
IAQ State Program	TN Radon Program
Program Website	TN State Radon Website
Phone	615-532-0738
Fax Number	615-532-0199
State Resources	Lexi Brown (Lexi.Brown@tn.gov) Tennessee Dept. of Environment and Conservation Phone: 615-532-0738 tn.gov 800-232-1139 888-891-8332
Radon Data	TN Zone Map from EPA
Regional Resources	Region 4; Indoor Air Quality IED's Tribal Resources Mary Reynolds (Reynolds.Mary@epa.gov) 404-562-8991

Region 5 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

Illinois

Resource Title	State Information
IAQ State Program	IL Emergency Management Agency Radon Program
Program Website	IL State Radon Website
Phone
Fax Number
State Resources	Patrick Daniels (patrick.daniels@illinois.gov) Illinois Emergency Management Agency 800-782-7860 / 217-782-7860 (24 hrs/day) Illinois Department of Public Health Phone: 217-782-4977 Fax: 217-782-3987 TTY: 800-547-0466 illinois.gov 800-325-1245 (IL residents only)
Radon Data	IL Zone Map from EPA IEMA Public Radon Dashboard
Regional Resources	Region 5; Indoor Air Quality IED's Tribal Resources Jeanette Marrero (Marrero.Jeanette@epa.gov) 312-886-6543

Indiana

Resource Title	State Information
IAQ State Program	IN Radon Program
Program Website	IN State Radon Website
Phone
Fax Number
State Resources	Paul Krievins (pkrievins@isdh.in.gov ) 317-233-7197 Indiana Department of Environmental Management Phone: 317-232-8603 Tool-free: 1-800-272-9723 Report Environmental Emergencies, 24 hours-a-day: 888-233-7745 (inside U.S.), 317-233-7745 (outside U.S.) IDEM Fax: 317-233-6647 in.gov 800-272-9723
Radon Data	IN Zone Map from EPA
Regional Resources	Region 5; Indoor Air Quality IED's Tribal Resources Jeanette Marrero (Marrero.Jeanette@epa.gov) 312-886-6543

Michigan

Resource Title	State Information
IAQ State Program	MI Dept. of Environmental Quality, Office of Waste Management and Radiological Protection
Program Website	MI State Radon Website
Phone
Fax Number
State Resources	Leslie E. Smith, III (radon@michigan.gov) Michigan Dept. of Environment, Great Lakes, and Energy Michigan Dept. of Human Services Toll Free 800-723-6642 (in state only) MI Toxic Hotline: 1-800-MI-TOXIC (1-800-648-6942) michigan.gov
Radon Data	MI Zone Map from EPA MI Interactive Radon Map
Regional Resources	Region 5; Indoor Air Quality IED's Tribal Resources Jeanette Marrero (Marrero.Jeanette@epa.gov) 312-886-6543

Minnesota

Resource Title	State Information
IAQ State Program	MN Dept. of Health, Indoor Air Program, Radon in MN Homes
Program Website	MN State Radon Website
Phone
Fax Number
State Resources	Email the Indoor Air Unit (health.indoorair@state.mn.us) Minnesota Dept. of Health, Air Quality Program Minnesota Department of Health Phone: 651-201-5000 Request Environmental Health General Information state.mn.us 800-798-9050
Radon Data	Minnesota Dept. of Health Recommends: 1. Every Minnesota home, even those built radon-resistant, be tested for radon. 2. You should retest your home every 2 - 5 years and save your results. 3. Be sure to test before and after you make any major structural renovations such as building an addition or finishing a basement. Radon-resistant techniques can be inexpensively included as part of the renovation, if needed. 4. You should also perform a radon test after buying a new heating system or adding central air conditioning. MN Zone Map from EPA MN Radon Interactive Map
Regional Resources	Region 5; Indoor Air Quality IED's Tribal Resources Jeanette Marrero (Marrero.Jeanette@epa.gov) 312-886-6543

Ohio

Resource Title	State Information
IAQ State Program	OH Department of Health, Radon Education and Licensing Program
Program Website	OH State Radon Website
Phone
Fax Number
State Resources	indoor.radon@odh.ohio.gov (indoor.radon@odh.ohio.gov) Ohio Department of Health Phone: 614-644-3020 Ohio Department of Health (ODH) ohio.gov 800-523-4439 (Ohio residents only)
Radon Data	OH Zone Map from EPA
Regional Resources	Region 5; Indoor Air Quality IED's Tribal Resources Jeanette Marrero (Marrero.Jeanette@epa.gov) 312-886-6543

Wisconsin

Resource Title	State Information
IAQ State Program	WI Radon Program
Program Website	WI State Radon Website
Phone	608-267-7199
Fax Number
State Resources	Amanda Bagin (Amanda.Bagin@dhs.wisconsin.gov) Phone: 608-267-2949 WI Radon Information Centers wisconsin.gov 888-569-7236
Radon Data	WI Zone Map from EPA Interactive Radon Map WI County Environmental Health Profiles
Regional Resources	Region 5; Indoor Air Quality IED's Tribal Resources Jeanette Marrero (Marrero.Jeanette@epa.gov) 312-886-6543

Region 6 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

Arkansas | Louisiana | New Mexico | Oklahoma | Texas

Arkansas

Resource Title	State Information
IAQ State Program	AR Department of Health Radiation Control Section
Program Website	AR State Radon Website
Phone	501-661-2621
Fax Number	501-280-4090
State Resources	Rebecca Davis (adh.epi.radon@arkansas.gov) 800-633-1735
Radon Data	AR Zone Map from EPA
Regional Resources	Region 6; Indoor Air Quality IED's Tribal Resources George Brozowski (brozowski.george@epa.gov) 214-665-8541

Louisiana

Resource Title	State Information
IAQ State Program	LA Department of Environmental Quality 602 N. Fifth Street Baton Rouge, LA 70802 OR Department of Health 628 N. Fourth Street Baton Rouge, LA 70802
Program Website	LA State Radon Website
Phone	1-866-896-LDEQ
Fax Number	225-219-3154
State Resources	Russell S. Clark (Russell.Clark@la.gov) 225-219-3677 Melanie Ramson (Melanie.Ramson@la.gov) 225-342-8303 Louisiana Department of Health Phone: 225-342-9500 Fax: 225-342-5568 LA DHH Email louisiana.gov 866-896-5337
Radon Data	LA Zone Map from EPA Radon Levels for LA
Regional Resources	Region 6; Indoor Air Quality IED's Tribal Resources George Brozowski (brozowski.george@epa.gov) 214-665-8541

New Mexico

Resource Title	State Information
IAQ State Program	New Mexico Environment Department, Radiation Control Bureau 525 Camino de los Marquez, Suite 1, Santa Fe, New Mexico 87505
Program Website	NM State Radon Website
Phone	505-476-8608
Fax Number	505-476-8654
State Resources	NM Environment Department newmexico.gov New Mexico residents can request free Radon Test Kits while supplies last. A limited number of free radon test kits are also occasionally available through this program and can be obtained by contacting the Program Coordinator. 800-324-5928
Radon Data	NM Zone Map from EPA
Regional Resources	Region 6; Indoor Air Quality IED's Tribal Resources George Brozowski (brozowski.george@epa.gov) 214-665-8541

Oklahoma

Resource Title	State Information
IAQ State Program	OK Department of Environmental Quality, Land Protection Division, Radiation Management Section
Program Website	OK State Radon Website
Phone	405-702-5100
Fax Number	405-702-5101
State Resources	Keisha Cornelius (keisha.cornelius@deq.ok.gov) Phone: 405-702-5162 Oklahoma Department of Environmental Quality The Oklahoma State Department of Health Phone: 405-271-5600 ok.gov
Radon Data	OK Zone Map from EPA
Regional Resources	Region 6; Indoor Air Quality IED's Tribal Resources George Brozowski (brozowski.george@epa.gov) 214-665-8541

Texas

Resource Title	State Information
IAQ State Program	TX Department of State Health Services, Radon Program
Program Website	TX State Radon Website
Phone	806-834-6202
Fax Number	512-834-6726
State Resources	radontesting@ttu.edu (radontesting@ttu.edu) Texas Department of State Health Services Phone: 512-776-7111 Toll Free: 888-963-7111/TDD: 800-735-2989 texas.gov
Radon Data	TX Zone Map from EPA
Regional Resources	Region 6; Indoor Air Quality IED's Tribal Resources George Brozowski (brozowski.george@epa.gov) 214-665-8541

Region 7 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

Iowa | Kansas | Missouri | Nebraska

Iowa

Resource Title	State Information
IAQ State Program	IA Department of Public Health Radon Program
Program Website	IA State Radon Website
Phone	515-281-4928
Fax Number
State Resources	Randy Lane (randy.lane@idph.iowa.gov) IA Department of Public Health iowa.gov 800-383-5992
Radon Data	IA Zone Map from EPA
Regional Resources	Region 7; Indoor Air Quality IED's Tribal Resources SIRG regional contact: Molly Schreiner Email: schreiner.molly@epa.gov, Phone: 913-551-7228

Kansas

Resource Title	State Information
IAQ State Program	Radiation Control Program, KS Department of Health and Environment
Program Website	KS State Radon Website
Phone	785-296-4359
Fax Number
State Resources	Jason Meinholdt the Director of Radiation Control Program (jason.meinholdt@ks.gov) Kansas State University's Kansas Radon Program Phone: 785-532-6026 Fax: 785-532-6952 The Kansas Department of Health and the Environment Phone: 785-296-1500 Fax: 785-368-6368 KDHEKS Email kansas.gov 800-693-5343
Radon Data	KS Zone Map from EPA KS Radon Program - County Map
Regional Resources	Region 7; Indoor Air Quality IED's Tribal Resources SIRG regional contact: Molly Schreiner Email: schreiner.molly@epa.gov, Phone: 913-551-7228

Missouri

Resource Title	State Information
IAQ State Program	Bureau of Environmental Epidemiology, MO Department of Health and Senior Services
Program Website	MO State Radon Website
Phone	573-751-6102
Fax Number	573-526-6946
State Resources	Brandi Hamilton (radon@health.mo.gov) Missouri Department of Health and Senior Services mo.gov 866-628-9891
Radon Data	MO Zone Map from EPA
Regional Resources	Region 7; Indoor Air Quality IED's Tribal Resources SIRG regional contact: Molly Schreiner Email: schreiner.molly@epa.gov, Phone: 913-551-7228

Nebraska

Resource Title	State Information
IAQ State Program	NE Dept. of Health and Human Services, Office of Environmental Health Hazards and Indoor Air, Radon Program
Program Website	NE State Radon Website
Phone	402-471-0783
Fax Number	402-471-8833
State Resources	Adrienne Moody (Adrienne.Moody@nebraska.gov) Nebraska Department of Health and Human Services (HHS) nebraska.gov 800-334-9491
Radon Data	NE Zone Map from EPA
Regional Resources	Region 7; Indoor Air Quality IED's Tribal Resources SIRG regional contact: Molly Schreiner Email: schreiner.molly@epa.gov, Phone: 913-551-7228

Region 8 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

Colorado

Resource Title	State Information
IAQ State Program	CO Department of Public Health & Environment (CDPHE)
Program Website	CO State Radon Website
Phone	800-846-3986
Fax Number	303-691-7841
State Resources	Margaret Horton (margaret.horton@state.co.us) Radon Program coordinator CO Dept. of Public Health and Environment colorado.gov 800-846-3986
Radon Data	CO Zone Map from EPA Colorado Public Health Data Explorer
Regional Resources	Region 8; Indoor Air Quality IED's Tribal Resources Amanda Hong (Hong.Amanda@epa.gov) 303-312-6221

Montana

Resource Title	State Information
IAQ State Program	MT Department of Environmental Quality, Energy: Radon
Program Website	MT State Radon Website
Phone	406-444-6592
Fax Number
State Resources	Michael Gustafson MT Department of Environmental Quality MT Dept. of Public Health and Human Services Phone: 406-444-6592 Fax: 406-444-0281 mt.gov
Radon Data	MT Zone Map from EPA
Regional Resources	Region 8; Indoor Air Quality IED's Tribal Resources Amanda Hong (Hong.Amanda@epa.gov) 303-312-6221

North Dakota

Resource Title	State Information
IAQ State Program	ND Department of Environmental Quality
Program Website	ND State Radon Website
Phone	701-328-5166
Fax Number	701-328-5200
State Resources	Justin Otto (jotto@nd.gov) North Dakota Department of Health https://deq.nd.gov/
Radon Data	ND Zone Map from EPA
Regional Resources	Region 8; Indoor Air Quality IED's Tribal Resources Amanda Hong (Hong.Amanda@epa.gov) 303-312-6221

South Dakota

Resource Title	State Information
IAQ State Program	SD Dept. of Environment & Natural Resources
Program Website	SD State Radon Website
Phone	605-773-6038
Fax Number
State Resources	Duncan Jakubowski (Duncan.jakubowski@state.sd.us) SD Department of Health Phone: 605-773-3361 Toll-free: 800-738-2301 (in state) Email: DOH.info@state.sd.us sd.gov 800-438-3367
Radon Data	SD Zone Map from EPA
Regional Resources	Region 8; Indoor Air Quality IED's Tribal Resources Amanda Hong (Hong.Amanda@epa.gov) 303-312-6221

Utah

Resource Title	State Information
IAQ State Program	UT Dept. of Environmental Quality, Radiation Control Division
Program Website	UT State Radon Website
Phone	801-536-0091
Fax Number
State Resources	Eleanor Divver (edivver@utah.gov) Utah Department of Health Email: hlthquestions@utah.gov utah.gov 800-458-0145
Radon Data	UT Zone Map from EPA
Regional Resources	Region 8; Indoor Air Quality IED's Tribal Resources Amanda Hong (Hong.Amanda@epa.gov) 303-312-6221

Wyoming

Resource Title	State Information
IAQ State Program	WY Department of Health
Program Website	WY State Radon Website
Phone	307-777-3480
Fax Number	307-777-3765
State Resources	Randi Norton-Herrington Wyoming Department of Health Phone: 307-777-7656 Fax: 307-777-7439 wyo.gov 800-264-1296
Radon Data	WY Zone Map from EPA
Regional Resources	Region 8; Indoor Air Quality IED's Tribal Resources Amanda Hong (Hong.Amanda@epa.gov) 303-312-6221

Region 9 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

Arizona | California | Guam | Hawaii | Nevada

Arizona

Resource Title	State Information
IAQ State Program	AZ Department of Health Services – Bureau of Radiation Control
Program Website	AZ State Radon Website
Phone	602-255-4850
Fax Number	602-437-0705
State Resources	Rich Baker (Rich.Baker@azdhs.gov) az.gov AZ Dept. of Health Services Webform Email
Radon Data	AZ Zone Map from EPA
Regional Resources	Region 9; Indoor Air Quality IED's Tribal Resources General Radon Inquiries: Ryder Freed (freed.ryder@epa.gov) 415-972-3267

California

Resource Title	State Information
IAQ State Program	CA Indoor Radon Program
Program Website	CA State Radon Website
Phone	916-449-5674
Fax Number	916-449-5665
State Resources	Radon Program Manager (Radonprogram@cdph.ca.gov) Low-cost, Short Term Test Kits for California Residents 800-745-7236
Radon Data	CA Zone Map from EPA
Regional Resources	Region 9; Indoor Air Quality IED's Tribal Resources General Radon Inquiries: Ryder Freed (freed.ryder@epa.gov) 415-972-3267

Guam

Resource Title	State Information
IAQ State Program	GU Environmental Protection Agency
Program Website	Guam Radon Website
Phone	671-300-4770
Fax Number	671-300-4531
State Resources	Michelle C. Razo Lastimoza (Michelle.Lastimoza@epa.guam.gov) GU EPA Facebook Department of Public Health and Social Services guam.gov
Radon Data	None Available
Regional Resources	Region 9; Indoor Air Quality IED's Tribal Resources General Radon Inquiries: Ryder Freed (freed.ryder@epa.gov) 415-972-3267

Hawaii

Resource Title	State Information
IAQ State Program	Noise Radiation and Indoor Air Quality Branch (NRIAQ)
Program Website	HI State Radon Website
Phone	808-586-4700
Fax Number	808-586-5838
State Resources	Hawaii DOH main email (webmail@doh.hawaii.gov) State Department of Health hawaii.gov Radon Testing in Your Home: Hawaii
Radon Data	HI Zone Map from EPA
Regional Resources	Region 9; Indoor Air Quality IED's Tribal Resources General Radon Inquiries: Ryder Freed (freed.ryder@epa.gov) 415-972-3267

Nevada

Resource Title	State Information
IAQ State Program	University of Nevada, Reno Extension Nevada Radon Education Program
Program Website	NV State Radon Website
Phone	775-784-4848
Fax Number
State Resources	Christine Kelly (ChrisK@unr.edu) 775-336-0252 Radon Testing in Your Home: Nevada
Radon Data	NV Zone Map from EPA NV Public Health Data Explorer
Regional Resources	Region 9; Indoor Air Quality IED's Tribal Resources General Radon Inquiries: Ryder Freed (freed.ryder@epa.gov) 415-972-3267

Region 10 Office, State and Tribal Programs

Click on your state to find your state radon contact information and resources:

Alaska | Idaho | Oregon | Washington

Alaska

Resource Title	State Information
IAQ State Program	AK Department of Environmental Conservation Division of Air Quality
Program Website	AK State Radon Website
Phone	907-465-5100
Fax Number	907-465-5129
State Resources	Jennifer Athey (Jennifer.Athey@alaska.gov) Fairbanks Cooperative AK Department of Health and Social Services Alaska Division of Public Health alaska.gov AK Department of Environmental Conservation: 800-770-8973 University of AK Cooperative: 800-478-8324
Radon Data	AK Zone Map from EPA
Regional Resources	Region 10; Indoor Air Quality IED's Tribal Resources Jim McAuley (mcauley.jim@epa.gov) 206-553-1987 Gretchen Jankauskas-Stewart (Stewart.Gretchen@epa.gov) 206-553-0527

Idaho

Resource Title	State Information
IAQ State Program	ID Department of Health and Welfare Indoor Environment/Radon
Program Website	ID State Radon Website
Phone	208-334-0606
Fax Number	208-334-6573
State Resources	Carolee Cooper (Radon@dhw.idaho.gov) ID Department of Health and Welfare idaho.gov 1-800-445-8647
Radon Data	ID Zone Map from EPA
Regional Resources	Region 10; Indoor Air Quality IED's Tribal Resources Jim McAuley (mcauley.jim@epa.gov) 206-553-1987 Gretchen Jankauskas-Stewart (Stewart.Gretchen@epa.gov) 206-553-0527

Oregon

Resource Title	State Information
IAQ State Program	OR Health Authority, Public Health Division, Environmental Public Health Section, OR Radon Awareness Program
Program Website	OR State Radon Website
Phone	971-673-0440
Fax Number	971-673-0979
State Resources	Brett Sherry (brett.w.sherry@oha.or.gov) Jara Popinga (jara.popinga@oha.or.gov) OR Health Authority Public Health Division
Radon Data	OR Radon Risk Map OR Zone Map from EPA
Regional Resources	Region 10; Indoor Air Quality IED's Tribal Resources Jim McAuley (mcauley.jim@epa.gov) 206-553-1987 Gretchen Jankauskas-Stewart (Stewart.Gretchen@epa.gov) 206-553-0527

Washington

Resource Title	State Information
IAQ State Program	WA State Department of Health, Community and Environment: Radon
Program Website	WA State Radon Website
Phone	360-236-3200
Email	DOH.Radon@doh.wa.gov
State Resources	Gary Garrety (Gary.Garrety@doh.wa.gov) WA State Department of Health
Radon Data	WA Zone Map from EPA DOH WA Tracking Network (WTN) On the Go DOH WTN: A Source for Environmental Public Health Data
Regional Resources	Region 10; Indoor Air Quality IED's Tribal Resources Jim McAuley (mcauley.jim@epa.gov) 206-553-1987 Gretchen Jankauskas-Stewart (Stewart.Gretchen@epa.gov) 206-553-0527

Supplemental Information

Some states operate state-run credentialing programs. These programs exercise a statutory authority at the state level to oversee radon service providers by establishing and implementing requirements (e.g., licensing) to ensure radon testing and/or mitigation service providers have demonstrated and maintain sufficient professional competence. States with credentialing programs to date: CA, CO, CT, FL, IL, IN, IA, KS, KY, ME, MN, NE, NH, NJ, OH, PA, RI, UT, VA and WV.
Regional Radon Training Centers
National Radon Program Services (Operated by Kansas State University)
EPA's Indoor Air Quality Tribal Partners Program
EPA's State Environmental Agencies List
Tribal Indoor Air Quality Directory
Environmental Law Institute Database of Radon Laws