Clean Water Act discharge permit · NPDES IN0020117
MONTPELIER WWTP, Montpelier, IN: NPDES IN0020117 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
MONTPELIER WWTP holds NPDES permit IN0020117, which discharges to Salamonie River. EPA’s file records it issued July 29, 2020 and expiring February 28, 2026. 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 | MONTPELIER WWTP |
|---|---|
| Permittee as filed | MONTPELIER WWTP |
| NPDES ID | IN0020117 |
| 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 | July 29, 2020 |
| Expiration date | February 28, 2026 |
| Issuing agency | IDEM |
| Address | Montpelier, IN 47359 |
| Receiving water | SALAMONIE RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Headwaters Rock Creek (HUC 051201010701) |
| Program components on file | CSO, POTW |
| 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
- 15Pollutants on file
- 13Under a numeric limit
- 13With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 98 | 80 | September 30, 2025 | 217% over the limit |
| pH | 2 | 80 | 75 | July 31, 2026 | |
| BOD, carb-5 day, 20 deg C, percent removal | 0 | 43 | 42 | May 31, 2005 | 333% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 38 | 25 | February 28, 2025 | 268% over the limit |
| E. coli, colony forming units [CFU] | 3 | 34 | 23 | August 31, 2020 | 561% over the limit |
| Chlorine, total residual | 2 | 8 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 6 | 0 | ||
| Precipitation, monthly accumulation | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 4 | 0 | ||
| Number of Events | 2 | 2 | 0 | ||
| Flow, total | 1 | 2 | 0 | ||
| Duration | 2 | 1 | 0 | ||
| Flow, wastewater by-passing trtmnt plant | 0 | 1 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 2 | 0 | 0 | ||
| Discharge event observation [Visual Monitoring] | 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 IN0020117.
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, IN0020117.
Start the watch
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- One watershed — $2,990/year
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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 IN0020117 there.
Nearby on the register
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- Every permit record in Montpelier, A to Z
- Discharge permits in Indiana
- Every permit record in Indiana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.