Clean Water Act discharge permit · NPDES IL0046141
SANGAMON VALLEY PWD STP, Mahomet, IL: NPDES IL0046141 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
SANGAMON VALLEY PWD STP, held by SANGAMON VALLEY PUBLIC WATER DISTRICT, holds NPDES permit IL0046141, which discharges to Sangamon River. EPA’s file records it issued April 1, 2021 and expiring March 31, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SANGAMON VALLEY PWD STP |
|---|---|
| Permittee as filed | SANGAMON VALLEY PUBLIC WATER DISTRICT |
| NPDES ID | IL0046141 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 1, 2021 |
| Expiration date | March 31, 2026 |
| Address | Mahomet, IL 61853 |
| Receiving water | SANGAMON RIVER |
| Subwatershed | Lake of the Woods-Sangamon River (HUC 071300060204) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 12Pollutants on file
- 11Under a numeric limit
- 10With a violation of any kind
- 6With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Oxygen, dissolved [DO] | 5 | 17 | 14 | June 30, 2023 | 20% over the limit |
| Solids, total suspended | 5 | 22 | 2 | November 30, 2009 | 16% over the limit |
| Chlorine, total residual | 2 | 6 | 2 | May 31, 2023 | 20% over the limit |
| pH | 2 | 7 | 1 | April 30, 2013 | |
| Coliform, fecal general | 2 | 1 | 1 | May 31, 2013 | 99,999% over the limit |
| Coliform, fecal - % samples exceeding limit | 1 | 1 | 1 | May 31, 2013 | 900% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 16 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 12 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 4 | 0 | ||
| Nitrate nitrogen, dry weight | 0 | 2 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 16, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IL0046141.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IL0046141 there.
Nearby on the register
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- Every permit record in Mahomet, A to Z
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- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.