Illinois Surface Discharge Permit (ILG62)
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What is a discharge permit?
Wastewater from homes or businesses that are not connected to a municipal sewer system is generally treated by individual wastewater treatment systems. In most cases, that means a septic system. Nearly one in four households in the United States uses an individual septic system to treat wastewater.
What comes out of the septic system is called discharge. Discharge usually goes into the ground around the system, but it may also be released onto the ground surface and potentially into nearby bodies of water. The Clean Water Act and the Illinois Environmental Protection Act require permits for septic systems that discharge into federally protected waters.
EPA issues the permit under the National Pollutant Discharge Elimination System (NPDES).
EPA has made a final decision to issue the NPDES general permit for point source discharges of pollutants from new or replacement individual wastewater treatment systems to federally protected waters in Illinois. This General Permit will become effective on Feb. 10, 2014.
- Sept. 17, 2012 - EPA published a draft general permit for public comment and accepted comments through Nov. 15, 2012.
- EPA has responded to all significant comments received during the public comment period and revised the permit where necessary in response to those comments. (see Response to Public Comments under Documents)
Who can be covered under the General Permit?
People who are eligible for the final General Permit will be able to discharge pollutants from septic systems to waters of the United States in accordance with the terms and conditions of the General Permit.
The permit sets discharge limits and requires periodic inspection, monitoring and reporting.
Anyone not eligible for the General Permit may apply to the Illinois Environmental Protection Agency for an individual NPDES permit.
How do I obtain coverage under the General Permit?
- You must submit a notice of intent (NOI) and the supplemental information required in the General Permit.
- Send your NOI via certified mail to:
- U.S. Environmental Protection Agency
Region 5 Water Division
NPDES Programs Branch (WN-16J)
General Permit ILG62 NOI
77 W. Jackson Blvd.
Chicago, IL 60604-3590
- EPA will review the NOI and make a decision 30 calendar days from the date it receives your NOI.
- Unless coverage is denied, you are eligible to discharge in accordance with the General Permit 30 calendar days after EPA receives your NOI.
- Although not specified in the final permit, EPA will also send a coverage letter to you and the applicable county health department.
What if I am denied coverage under the General Permit?
If coverage under the General Permit is denied, EPA will notify both the applicant and the applicable county health department of EPA’s decision to deny permit coverage. EPA will notify both parties by telephone and follow up with a formal letter on the decision.
- Final NPDES Permit No. ILG62 (PDF) (52 pp, 1.3MB) Dec. 31, 2013
- Appendix II-Notice of Intent (NPDES Form ILG62 NOI) (PDF) (6 pp, 308K)
- Response to Public Comments (PDF) (59 pp, 558K) Dec. 31, 2013
- Economic Feasibility Calculator (Excel spreadsheet) (138K) Dec. 31, 2013
- Notice of Final Decision Dec. 31, 2013
- Draft NPDES General Permit No. ILG62 (PDF) (43 pp, 856K) September 2012
- EPA to Issue General Permit for Septic System Discharge - fact sheet (PDF) (2 pp, 106K) September 2012
- Technical Fact Sheet for General Permit No. ILG62 (PDF) (94 pp, 1.2MB) September 2012
- Federal Register Notice Sept. 17, 2012
- Public Notice of EPA Open House and Public Hearing (PDF) (1 pg, 101K) September 2012
Notice of final decision - December 31, 2013
Final National Pollutant Discharge Elimination System (NPDES) General Permit for Discharges from New and Replacement Septic Systems
This notice announces the decision made by the United States Environmental Protection Agency to issue the final NPDES general permit for point source discharges of pollutants from new or replacement individual wastewater treatment systems to federally protected waters in Illinois. This action is effective on February 10, 2014.
EPA published a draft general permit for public comment on September 17, 2012 and accepted comments on the draft permit through November 15, 2012. 77 FR 57084. Pursuant to federal regulations at 40 CFR 124.17, EPA has responded to all significant comments received during the public comment period and revised the permit where necessary in response to comments. Please refer to the response summary document to review all significant comments, responses, and a summary of revisions made to the NPDES general permit.
People who are eligible for the final general permit will be able to discharge from septic systems under the permit. The permit sets discharge limits and requires periodic inspection, monitoring and reporting. Anyone not eligible for the general permit may apply for an individual permit from the Illinois EPA.
In accordance with 40 C.F.R. Part 23, this permit shall be considered issued for the purpose of judicial review on February 10, 2014. Under section 509(b) of the Clean Water Act, judicial review of this general permit can be had by filing a petition for review in the United States Court of Appeals within 120 days after the permit is considered issued for purposes of judicial review. Under section 509(b)(2) of the Clean Water Act, the requirements in this permit may not be challenged later in civil or criminal proceedings to enforce these requirements. In addition, this permit may not be challenged in other agency proceedings.
To see the final permit, response summary, and related documents, go to www.epa.gov/region5/water/npdestek/surfacedischarge or visit the EPA’s Chicago regional office to view the full administrative record. To schedule an appointment at the Chicago office, contact Mark Ackerman at 312-353-4145.
You may call EPA toll-free at 800-621-8431, 8:30 a.m. – 4:30 p.m. Central time, weekdays.