Clean Water Act discharge permit · NPDES NY0108324
OSSINING SANITARY SD WWTP, Ossining, NY: NPDES NY0108324 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 44Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
OSSINING SANITARY SD WWTP, held by WESTCHESTER CO DEPT ENV FAC, holds NPDES permit NY0108324, which discharges to Hudson R. EPA’s file records it issued January 26, 2007 and expiring August 31, 2012. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | OSSINING SANITARY SD WWTP |
|---|---|
| Permittee as filed | WESTCHESTER CO DEPT ENV FAC |
| NPDES ID | NY0108324 |
| 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 | January 26, 2007 |
| Expiration date | August 31, 2012 |
| Issuing agency | NYSDEC |
| Address | Ossining, NY 10562 |
| Receiving water | HUDSON R |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Sparta Brook-Hudson River (HUC 020301010401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 48Pollutants on file
- 44Under a numeric limit
- 37With a violation of any kind
- 10With 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 | 9 | 88 | 16 | November 30, 2006 | 99,999% over the limit |
| Solids, settleable | 2 | 18 | 15 | October 31, 2010 | 16,567% over the limit |
| Solids, suspended percent removal | 1 | 14 | 11 | November 30, 2006 | 120% over the limit |
| Flow, in conduit or thru treatment plant | 1 | 21 | 8 | March 31, 2011 | 7,200% over the limit |
| Carbonaceous oxygen demand, % removal | 1 | 9 | 6 | March 31, 2005 | 47% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 9 | 77 | 5 | January 31, 2004 | 99,999% over the limit |
| Coliform, fecal general | 3 | 10 | 2 | June 30, 2006 | 132% over the limit |
| pH | 4 | 9 | 2 | November 30, 2008 | |
| Chlorine, total residual | 1 | 3 | 2 | September 30, 2000 | 45% over the limit |
| Mercury, total [as Hg] | 2 | 42 | 1 | June 30, 2010 | 7% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 114 | 0 | ||
| Chromium, total [as Cr] | 2 | 23 | 0 | ||
| Copper, total [as Cu] | 2 | 22 | 0 | ||
| Antimony, total [as Sb] | 2 | 22 | 0 | ||
| Cadmium, total [as Cd] | 1 | 22 | 0 | ||
| Silver, total [as Ag] | 2 | 21 | 0 | ||
| Chloroform | 2 | 20 | 0 | ||
| Nitrogen, ammonia, total [as NH3] | 2 | 17 | 0 | ||
| Phosphorus, total [as P] | 2 | 16 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 14 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 14 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 11 | 0 | ||
| Phosphorous, in total orthophosphate | 2 | 11 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 6 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 4 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 0 | 4 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 4 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 0 | 4 | 0 | ||
| Lead, total [as Pb] | 2 | 2 | 0 | ||
| Nickel, total [as Ni] | 2 | 2 | 0 | ||
| Cadmium, dissolved [as Cd] | 1 | 2 | 0 | ||
| Copper, dissolved [as Cu] | 1 | 2 | 0 | ||
| Lead, dissolved [as Pb] | 1 | 2 | 0 | ||
| Nickel, dissolved [as Ni] | 1 | 2 | 0 | ||
| Silver, dissolved [as Ag] | 1 | 2 | 0 | ||
| Zinc, dissolved [as Zn] | 1 | 2 | 0 | ||
| Zinc, total [as Zn] | 2 | 1 | 0 | ||
| Methylene chloride | 2 | 0 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 0 | 0 | ||
| Annual amt of sludge incinerated | 1 | 0 | 0 | ||
| Annual sludge production, total | 1 | 0 | 0 | ||
| Annual amount of sludge land applied | 1 | 0 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 0 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 0 | 0 | ||
| 48Hr Acute Mysidopsis Bahia | 1 | 0 | 0 | ||
| TU 48Hr Acute Cyprinodon variegatus | 1 | 0 | 0 | ||
| TU Static Renewal Chronic Cyprinodeon variegatus | 1 | 0 | 0 | ||
| TU Static Renewal 7-Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 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 NY0108324.
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 15, 2026.