Clean Water Act discharge permit · NPDES NY0023582
CHATHAM (V) STP, Chatham, NY: NPDES NY0023582 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
CHATHAM (V) STP, held by CHATHAM (V), holds NPDES permit NY0023582, which discharges to Stony Kill. EPA’s file records it issued November 1, 2020 and expiring October 31, 2025. 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 | CHATHAM (V) STP |
|---|---|
| Permittee as filed | CHATHAM (V) |
| NPDES ID | NY0023582 |
| 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 1, 2020 |
| Expiration date | October 31, 2025 |
| Issuing agency | NYSDEC |
| Address | Chatham, NY 12037 |
| Receiving water | STONY KILL |
| Subwatershed | Stony Kill (HUC 020200060606) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 15Under a numeric limit
- 17With a violation of any kind
- 12With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 1 | 72 | 63 | April 30, 2019 | 82% over the limit |
| Solids, suspended percent removal | 1 | 18 | 10 | September 30, 2024 | 287% over the limit |
| Solids, total suspended | 5 | 48 | 8 | May 31, 2016 | 116% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 15 | 8 | January 31, 2026 | 1,367% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 5 | 11 | 5 | January 31, 2022 | 68% over the limit |
| Oxygen demand, ultimate | 1 | 7 | 5 | August 31, 2020 | 225% over the limit |
| Nitrogen, ammonia, total [as NH3] | 0 | 7 | 5 | August 31, 2020 | 703% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 27 | 4 | June 30, 2023 | 260% over the limit |
| Oxygen, dissolved [DO] | 2 | 12 | 4 | June 30, 2008 | 56% over the limit |
| Carbonaceous oxygen demand, % removal | 0 | 5 | 4 | December 31, 2019 | 220% over the limit |
| pH | 2 | 20 | 2 | October 31, 2015 | |
| BOD, 5-day, percent removal | 1 | 9 | 2 | June 30, 2022 | 107% over the limit |
| Coliform, fecal general | 2 | 16 | 0 | ||
| Temperature, water deg. centigrade | 1 | 9 | 0 | ||
| Solids, settleable | 1 | 9 | 0 | ||
| Chlorine, total residual | 1 | 8 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 2 | 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 NY0023582.
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, NY0023582.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 NY0023582 there.
Nearby on the register
- Discharge permits in Chatham
- Every permit record in Chatham, A to Z
- Discharge permits in New York
- Every permit record in New York, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.