Clean Water Act discharge permit · NPDES IN0022578
CHESTERTON WWTP, Chesterton, IN: NPDES IN0022578 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
CHESTERTON WWTP, held by CHESTERTON WWTP, TOWN OF, holds NPDES permit IN0022578, which discharges to Lake Michigan/E Br Little Calumet. EPA’s file records it issued September 24, 2019 and expiring October 31, 2024. 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 | CHESTERTON WWTP |
|---|---|
| Permittee as filed | CHESTERTON WWTP, TOWN OF |
| NPDES ID | IN0022578 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 24, 2019 |
| Expiration date | October 31, 2024 |
| Issuing agency | IDEM |
| Address | Chesterton, IN 46304 |
| Receiving water | LAKE MICHIGAN/E BR LITTLE CALUMET |
| Subwatershed | Coffee Creek-East Arm Little Calumet River (HUC 040400010403) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 35Pollutants on file
- 28Under a numeric limit
- 24With a violation of any kind
- 11With 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 | 33 | 21 | September 30, 2008 | 660% over the limit |
| Solids, total suspended | 8 | 25 | 13 | May 31, 2011 | 801% over the limit |
| E. coli, colony forming units [CFU] | 3 | 12 | 12 | September 30, 2008 | 99,999% over the limit |
| Phosphorus, total [as P] | 2 | 6 | 3 | May 31, 2010 | 100% over the limit |
| E. coli, MTEC-MF | 0 | 3 | 3 | May 31, 1993 | 39% over the limit |
| Copper, dry weight | 2 | 3 | 2 | June 30, 2007 | 27% over the limit |
| pH | 2 | 7 | 1 | October 31, 1999 | |
| Oxygen, dissolved [DO] | 2 | 4 | 1 | September 30, 2021 | 3% over the limit |
| Phosphorus, total percent removal | 1 | 4 | 1 | June 30, 1996 | 10% over the limit |
| Solids, suspended percent removal | 0 | 3 | 1 | February 28, 2015 | 178% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 0 | 1 | 1 | February 28, 2015 | 202% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 6 | 0 | ||
| Flow, wastewater by-passing trtmnt plant | 0 | 3 | 0 | ||
| Mercury, total recoverable | 4 | 2 | 0 | ||
| Chlorine, total residual | 0 | 2 | 0 | ||
| BOD, 5-day, percent removal | 0 | 2 | 0 | ||
| Cadmium, dry weight | 2 | 1 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 2 | 1 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 2 | 1 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 2 | 1 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 2 | 1 | 0 | ||
| Duration | 1 | 1 | 0 | ||
| Discharge event observation [Visual Monitoring] | 1 | 1 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 8 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 5 | 0 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 5 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 5 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 5 | 0 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Number of Events | 2 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 2 | 0 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 1 | 0 | 0 | ||
| Precipitation, monthly accumulation | 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 IN0022578.
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.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.