Flint Drinking Water Documents

EPA documents related to Flint drinking water.

On this page:

• Flint Rash Investigation
• EPA Letter to MDEQ Director Creagh
• Drinking Water State Revolving Fund
• SDWA Emergency Order
• News Releases
• Status Update on SDWA Petition
• Data Summit Presentations
• Technical Support Team Documents
• Other Documents

Flint Rash Investigation

• Rash Study in Flint- Aug. 23, 2016

Filter Challenge Assessment Report

Filter Challenge Assessment prepared by EPA in coordination with the Unified Command Group, which concludes that filters distributed by the State of Michigan effectively remove lead or reduce it to levels well below EPA’s action level of 15 parts per billion (ppb).

• Flint Filter Challenge Assessment (pdf) (281.1 KB, June 22, 2016)
• Flint Filter Challenge Assessment (Spanish) (pdf) (483.2 KB, June 22, 2016

Administrator Letters

• Letter to Heidi Grether and Hon Karen Weaver Michigan - Sep 11, 2018
• EPA Regional Administrator Response to Flint Mayor Regarding Disinfection and Corrosion Control (pdf) (526.42 KB, November 16, 2016)
• EPA Letter to Michigan Governor, Flint Mayor about water source selection for the City of Flint (pdf) (836.94 KB, Oct. 25, 2016)
• EPA Administrator Letter to Flint Mayor Karen Weaver Regarding DWSRF Application (pdf) (924.68 KB, June 22, 2016)
• EPA Administrator Letter to Governor Snyder, Mayor Weaver (pdf) (2.09 MB, June 16, 2016)
• Results of the Flint Surface Water Treatment Plant Evaluation (pdf) (571.86 KB, April 25-28, 2016)
• EPA Administrator Letter to Michigan Governor Snyder (2/29/16) (pdf) (52.89 KB, Feb. 29, 2016)
• Administrator Letter to Flint Mayor Karen Weaver (pdf) (1.27 MB, February 20, 2016)
• EPA Administrator Letter to Michigan Governor Snyder (2/29/16) (pdf) (52.89 KB, Feb. 29, 2016)

EPA Letter to MDEQ Director Creagh

• EPA Letter to Michigan DEQ Director Creagh (2/29/2016) (pdf) (474.98 KB, Feb. 29, 2016)

Drinking Water State Revolving Fund

• Michigan EGLE Funding Summary 4-7-2025 (pdf) (82.22 KB, April 7, 2025)
• Grant extension request letter to EPA from MI EGLE (pdf) (132.61 KB, N, Nov. 14, 2023)
• Letter from EPA to MI EGLE extending the grant project period (pdf) (346.55 KB, Dec. 27, 2023)
• Michigan Drinking Water State Revolving Fund (DWSRF) Grant Status (pdf) (207.91 KB, 8/16/2023)
• Extension Request Letter to EPA for the Michigan Drinking Water State Revolving Fund Water Infrastructure Improvements (pdf) (146.58 KB, 10/22)
• Flint Drinking Water Grant Extension Letter, October 2022 (pdf) (667.93 KB, 10/2022)
• Letter from EPA to MI EGLE Extending the WIIN grant project period (pdf) (324.79 KB, 11/03/2021)
• Letter from EPA to Michigan EGLE and City of Flint Awarding $100M in supplemental Drinking Water State Revolving Funds (pdf) (77.02 KB, Feb. 27, 2020)
• Letter from EPA to Michigan EGLE and City of Flint Awarding $100M in supplemental Drinking Water State Revolving Funds (pdf) (77.02 KB, Feb. 27, 2020)
• Letter from EPA to MDEQ, City of Flint regarding the Amended Intended Use Plan (pdf) (285.48 KB, September 11, 2018)
• Letter from EPA to Michigan DEQ, City of Flint Regarding WIIN Expenditures (pdf) (442.92 KB, December 7, 2017)
  • Response from MDEQ Regarding WIIN Expenditures (pdf) (195.27 KB, December 11, 2017)
• Letter from EPA to Michigan DEQ Approving Forgiveness of Flint's Past Drinking Water Debt (pdf) (235.86 KB, August 1, 2017)
  • Letter from Michigan DEQ to EPA Requesting Approval to Forgive Flint's Drinking Water Debt (pdf) (1.23 MB, May 2, 2017)
• MDEQ Intended Use Plan (pdf) (150.7 KB, February 17, 2017)
• Supplemental DWSRF Capitalization Grants Memorandum - Feb. 8, 2017
• Letter from City of Flint to MDNR Regarding Intended Use Plan (pdf) (431.33 KB, January 24, 2017)
• Letter from EPA Regarding Supplemental SRF Appropriation (pdf) (661.85 KB, December 21, 2016)

SDWA Emergency Order

• Termination of EPA’s SDWA §1431 Emergency Order (pdf) (153.68 KB, September 1, 2021)
• EPA Letter to Flint and MEGLE Regarding the Performance Period – June 9, 2021 (pdf) (157.91 KB, June 9, 2021)
• EPA Letter to Flint and MEGLE Regarding PWS Staffing (pdf) (153.82 KB, June 26, 2019)
  • City of Flint Response to EPA Regarding PWS Staffing (pdf) (763.6 KB, July 2, 2019)
    • EPA Response to City of Flint Regarding PWS Staffing - July 25, 2019 (pdf) (246.64 KB)
• City of Flint Response to Flint Technical Support Team recommendations regarding FAST Start program, Service Line Replacement (pdf) (357.96 KB, September 11, 2018)
  • Printable ONLY: Filter Flush Form (pdf) (24.33 KB)
• Mayor Weaver’s Letter to EPA Providing Additional Information to Supplement MDEQ’s June 11, 2018 Update of Progress on EPA’s Emergency Administrative Order (pdf) (1.75 MB, June 14, 2018)
  • EPA Letter to Flint Mayor - Aug. 8, 2018 (pdf) (339.88 KB, Aug. 8, 2018)
  • City of Flint's Response to USEPA Region 5 letter supporting entry of an ACO with MDEQ (pdf) (1.2 MB, August 14, 2018)
• Letter from EPA to MDEQ and Flint. RE: LCR Compliance Monitoring Plan with Enclosure 1 (pdf) (366.45 KB, July 2018)
  • Enclosure 2: Implementation of the Lead and Copper Rule Provisions Related to Sample Site Selection and Triennial Monitoring - October 2016 (pdf) (721.08 KB, October 2016)
  • Enclosure 3: Lead and Copper Rule: Monitoring and Reporting Guidance for Public Water Systems (pdf) (1.6 MB, March 2010)
• EPA letter to the Hon. Karen Weaver (City of Flint) and Keith Creagh (MDNR) (pdf) (237.42 KB, May 18, 2018)
• City of Flint letter to EPA addressing Paragraph 59 and other requirements of the Emergency Order and its First Amendment (pdf) (2.86 MB, February 28, 2018)
• Letter from EPA to Michigan DNR, City of Flint Regarding Order Requirements (pdf) (873.46 KB, December 12, 2017)
  • Letter from EPA to Michigan DNR, City of Flint Regarding Order Requirements (pdf) (873.46 KB, December 12, 2017)
  • Michigan DEQ Response to EPA Regarding Order Compliance (pdf) (266.2 KB, December 20, 2017)
    • City of Flint resposne to EPA Dec 12 2017 letter attachments (pdf) (2.93 MB, January 8, 2018)
• Letter from EPA to City of Flint, Michigan DNR Regarding Order Compliance - Sep. 14, 2017
• Letter from EPA to City of Flint, Michigan DNR Regarding Order Compliance (pdf) (770.64 KB, September 14, 2017)
• City of Flint Response to EPA Regarding PWS Staffing (pdf) (2.07 MB, August 18, 2017)

• Letter from EPA to Michigan DEQ Regarding LCR Compliance Sampling (pdf) (419.39 KB, July 25, 2017)
• EPA Letter to Michigan DEQ Regarding Flint Plant Operational Status (pdf) (378.06 KB, June 16, 2017)

• EPA Response to City of Flint Regarding Long-term Drinking Water Sources (pdf) (642.34 KB, May 4, 2017)

• Letter to EPA from Councilwoman Fields (pdf) (3.72 MB, May 5, 2017)

• EPA Response to City of Flint Regarding Long-term Drinking Water Sources (pdf) (642.34 KB, May 4, 2017)

• Letter to EPA from City of Flint Regarding Long-Term Drinking Water Sources (pdf) (1004.11 KB, April 19, 2017)

• Letter to EPA from City of Flint Regarding Long-Term Drinking Water Sources (pdf) (1004.11 KB, April 19, 2017)

• Letter to EPA from City of Flint Regarding Three Week Delay (pdf) (898.17 KB, March 28, 2017)

• EPA Letter to City of Flint Regarding EPA’s Involvement in Treatment Changes at the Flint Water Treatment Plant (pdf) (583.13 KB, March 27, 2017)

• EPA Regional Administrator Response to Flint Mayor Regarding Disinfection and Corrosion Control (pdf) (526.42 KB, November 16, 2016)

• EPA Letter to City of Flint, MDEQ Regarding Proposed Corrosion Control Studies (pdf) (597.57 KB, February 24, 2017)

• Letter to EPA Korleski from Mayor Weaver dated February 28, 2017 with attachments

• EPA Letter to City of Flint Regarding Extension Request (pdf) (529.14 KB, February 21, 2017)

• City of Flint Response to EPA's Feb. 19, 2016 Letter (pdf) (1.41 MB, March 16, 2016)
• Letter to EPA Korleski from Mayor Weaver dated February 8, 2017 requesting an extension to the March 1 deadline for two elements of 60 b.iii. 

• City of Flint Request for Deadline Extension (pdf) (503.76 KB, December 16, 2016)
• GLWA Letter Agreement with Flint, Michigan (pdf) (137.25 KB, July 6, 2016)

• Letter from Michigan DEQ to City of Flint Approving Pipeline Plan (pdf) (189.59 KB, December 8, 2016)
• City of Flint Permit Application for Water Supply Systems (pdf) (213.12 KB, December 7, 2016)
• City of Flint Permit Application for Water Supply Systems (pdf) (213.12 KB, December 7, 2016)

• Letter from City of Flint to EPA Regarding Pipeline Plan (pdf) (46.55 KB, December 7, 2016)
• EPA Letter to Michigan DEQ, City of Flint Regarding Water Source Selection (pdf) (2.89 MB, September 2, 2016)

• Michigan DEQ Letter to City of Flint Regarding Water Source Selection (pdf) (743.88 KB, September 26, 2016)

• EPA Letter to Michigan DEQ, City of Flint Regarding Chlorine Supply (pdf) (108.22 KB, July 19, 2016)

• City of Flint Response to EPA, MDEQ Regarding Chlorine Supply (pdf) (580.42 KB, August 3, 2016)

• EPA Letter to Michigan DEQ, City of Flint Regarding Capability to Boost Chlorine (pdf) (2.72 MB, June 3, 2016)

• Michigan DEQ Letter to City of Flint Regarding Temporary Chemical Feed Systems (pdf) (169.73 KB, June 1, 2016)
• Michigan DEQ Letter to City of Flint Regarding Efforts to Treat Drinking Water (pdf) (146.26 KB, May 27, 2016)
• Task Force Recommendations on MDEQ's Draft Sentinel Site Selection (pdf) (1.13 MB, February 5, 2016)
• Michigan DEQ Letter to City of Flint Regarding Efforts to Treat Drinking Water (pdf) (146.26 KB, May 27, 2016)
• EPA Letter to Michigan DEQ Regarding Ongoing Compliance with Emergency Order (pdf) (1.01 MB, May 11, 2016)
• Michigan DEQ Response to EPA's March 29, 2016 Letter (pdf) (409.76 KB, April 19, 2016)
• Michigan DEQ Letter to EPA Regarding Status of Work Under Emergency Order (pdf) (1.95 MB, April 5, 2016)
• EPA Letter to City of Flint and Michigan DEQ Regarding Ongoing Compliance with Emergency Order (pdf) (1.47 MB, March 29, 2016)
• City of Flint Response to EPA's Feb. 19, 2016 Letter (pdf) (1.41 MB, March 16, 2016)
• Michigan DEQ Response to EPA's Feb. 19, 2016 Letter (pdf) (168.5 KB, March 8, 2016)
• EPA Letter to City of Flint and MDEQ Regarding Status of Work Under Emergency Order (pdf) (780.75 KB, February 19, 2016)
• EPA Response to City of Flint (pdf) (84.48 KB)
• EPA Response to Michigan DEQ (pdf) (90.08 KB)
• Michigan DEQ Response to EPA Emergency Order (pdf) (103.05 KB)
• EPA Safe Drinking Water Act Emergency Order (pdf) (3.23 MB)

News Releases

• EPA Announces Michigan Can Forgive Flint’s Past Drinking Water Debt - August 1, 2017
• EPA Awards $100 Million to Michigan for Flint Water Infrastructure Upgrades - March 17, 2017
• EPA Amends Emergency Order on Flint Drinking Water - Nov. 18, 2016
• Officials Emphasize Commitment to Flint after Federal Emergency Declaration Expires - Aug. 3, 2016
• Filtered Water Deemed Safe for Everyone in the Flint Community - June 23, 2016
• Flint Residential Flushing Protocol (pdf) (62.69 KB, April 16, 2016)
• Federal Government Continues Scientific Rash Investigation in Flint - March 24, 2016
• EPA Awards Grant to Virginia Tech for Water Sampling in Flint - March 1, 2016
• EPA's Latest Sampling Results Confirm Lead-Removal Filters are Working in Flint - Feb. 17, 2016
• EPA Updates Flint Response Website with Lead Assessment Results - Feb. 12, 2016
• EPA's Early Sampling Results Confirm Lead-Removal Filters are Working as Expected - Feb. 4, 2016
• EPA Updates Flint Response Website with Interactive Map, Chlorine Sampling Results - Jan. 30, 2016
• EPA Flint Drinking Water Response Activities - Jan. 29, 2016
• EPA Flint Drinking Water Response Activities - Jan. 28, 2016
• EPA Flint Drinking Water Response Activities - Jan. 27, 2016
• EPA Flint Drinking Water Response Activities - Jan. 26, 2016
• EPA Region 5 to Audit State of Michigan's Drinking Water Program - Nov. 10, 2015
• EPA Establishes Safe Drinking Water Task Force - Oct. 16, 2015

Status Update on SDWA Petition

• Status Update on SDWA Petition (pdf) (101.69 KB, December 10, 2015)

Data Summit Presentations

Presentations and documents from the third Flint data summit held in Chicago on January 10, 2017.

On January 10, EPA hosted the third Flint data summit. It was an invitation-only meeting. The summit was not a decision-making meeting and there was no attempt to come up with any consensus opinions. It was an opportunity for scientists who are studying Flint’s drinking water to compare notes and discuss their conclusions about the state of the water system’s recovery. The data and analyses will be shared with the public at several forums, beginning with the Flint Water Town Hall on Jan. 11.

• Flint Data Summit Final Agenda (pdf) (181.63 KB, Jan. 10, 2017)
• List of attendees at Third Flint Data Summit (pdf) (100.32 KB, Jan. 10, 2017)
• Lead Data in Flint July 1, 2016 – December 31, 2016 (pdf) (1.42 MB, Jan. 10, 2017)
• Flint Water Quality Parameters (pdf) (1.08 MB, Jan. 10, 2017)
• EPA Data Summit Presentation - Virginia Tech (pdf) (2.05 MB)
• Sequential Sampling (pdf) (1.02 MB, Jan. 10, 2017)
• Sequential Water Data Analysis (pdf) (584.68 KB, Jan. 10, 2017)
• Disinfectant Residual Monitoring & Maintaining Residuals (pdf) (9.39 MB, Jan. 10, 2017)
• Improvement and Calibration of Flint’s Hydraulic Model (pdf) (3.77 MB, Jan. 10, 2017)
• EPA Region 5 Flint Data Summit (pdf) (2.39 MB, Jan. 10, 2017)
• Analysis of Lead Data Sets (pdf) (3.01 MB, Jan. 10, 2017)
• Preliminary Results of an Investigation of an Outbreak of Shigella sonnei - Genesee and Saginaw Counties, Michigan, 2016 (pdf) (2.34 MB, Jan. 10, 2017)

Other Documents

• Final Report - High Lead at Three Residences in Flint, Michigan (pdf) (3.93 MB, November 4, 2015)
• EPA Public Water System Supervision Program Final Report: Program Review for the Michigan Department of Environmental Quality Water Bureau (pdf) (387.98 KB, August 30, 2010)