Clean Water Act discharge permit · NPDES IN0040967
LYNN WWTP, Lynn, IN: NPDES IN0040967 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 20Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
LYNN WWTP holds NPDES permit IN0040967, which discharges to Greens Fk Whitewater R Via Mud Crk. EPA’s file records it issued June 20, 2019 and expiring August 31, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | LYNN WWTP |
|---|---|
| Permittee as filed | LYNN WWTP |
| NPDES ID | IN0040967 |
| 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 | June 20, 2019 |
| Expiration date | August 31, 2024 |
| Issuing agency | IDEM |
| Address | Lynn, IN 47355 |
| Receiving water | GREENS FK WHITEWATER R VIA MUD CRK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Little Mud Creek-Mud Creek (HUC 050800030201) |
| Program components on file | POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 21Pollutants on file
- 20Under a numeric limit
- 13With 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] | 2 | 23 | 13 | July 31, 2023 | 8% over the limit |
| E. coli, colony forming units [CFU] | 3 | 24 | 11 | August 31, 2019 | 153% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 48 | 8 | October 31, 2014 | 139% over the limit |
| Solids, total suspended | 8 | 42 | 1 | December 31, 2005 | 87% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 41 | 1 | July 31, 2014 | 341% over the limit |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 4 | 7 | 1 | February 29, 2020 | 233% over the limit |
| pH | 2 | 20 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 20 | 0 | ||
| Flow, total | 1 | 8 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 4 | 6 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 4 | 6 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 4 | 6 | 0 | ||
| Flow, wastewater by-passing trtmnt plant | 0 | 2 | 0 | ||
| Copper, dry weight | 2 | 0 | 0 | ||
| Cadmium, dry weight | 2 | 0 | 0 | ||
| Number of Events | 2 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 2 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 2 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 2 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 2 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 2 | 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 IN0040967.
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
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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 IN0040967 there.
Nearby on the register
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- Every permit record in Indiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.