Clean Water Act discharge permit · NPDES IN0020711
WATERLOO WWTP, Waterloo, IN: NPDES IN0020711 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
WATERLOO WWTP holds NPDES permit IN0020711, which discharges to Cedar Cr To St Joseph River. EPA’s file records it issued November 10, 2016 and expiring February 28, 2022. 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 | WATERLOO WWTP |
|---|---|
| Permittee as filed | WATERLOO WWTP |
| NPDES ID | IN0020711 |
| 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 | November 10, 2016 |
| Expiration date | February 28, 2022 |
| Issuing agency | IDEM |
| Address | Waterloo, IN 46793 |
| Receiving water | CEDAR CR TO ST JOSEPH RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Dibbling Ditch-Cedar Creek (HUC 041000030602) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 15Under a numeric limit
- 13With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 8 | 62 | 61 | July 31, 2026 | 343% over the limit |
| E. coli, colony forming units [CFU] | 3 | 34 | 34 | July 31, 2026 | 930% over the limit |
| Solids, total suspended | 8 | 17 | 17 | April 30, 2026 | 123% over the limit |
| Phosphorus, total percent removal | 1 | 9 | 9 | January 31, 2017 | 41% over the limit |
| Phosphorus, total [as P] | 1 | 6 | 6 | September 30, 2018 | 50% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 4 | 4 | May 31, 2020 | 70% over the limit |
| Oxygen, dissolved [DO] | 1 | 3 | 1 | July 31, 2019 | 12% over the limit |
| pH | 2 | 1 | 1 | January 31, 2010 | |
| Precipitation, monthly accumulation | 1 | 12 | 0 | ||
| Duration | 1 | 6 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 1 | 4 | 0 | ||
| Discharge event observation [Visual Monitoring] | 1 | 3 | 0 | ||
| Number of Events | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 0 | 0 | ||
| Flow, total | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0020711.
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, IN0020711.
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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 IN0020711 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.