Clean Water Act discharge permit · NPDES NY0105724
ST MARY'S ASSUMPTION SCHOOL, Katonah, NY: NPDES NY0105724 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ST MARY'S ASSUMPTION SCHOOL, held by ST MARY'S OF THE ASSUMPTION SCHOOL, holds NPDES permit NY0105724, which discharges to Katonah Bk. EPA’s file records it issued July 6, 2016 and expiring March 31, 2022. 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 | ST MARY'S ASSUMPTION SCHOOL |
|---|---|
| Permittee as filed | ST MARY'S OF THE ASSUMPTION SCHOOL |
| NPDES ID | NY0105724 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 6, 2016 |
| Expiration date | March 31, 2022 |
| Issuing agency | NYSDEC |
| Address | Katonah, NY 10536 |
| Receiving water | KATONAH BK |
| Subwatershed | Stone Hill River (HUC 020301010304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 12Pollutants on file
- 9Under a numeric limit
- 10With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 4 | 12 | 0 | ||
| Solids, total suspended | 4 | 12 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Coliform, fecal general | 2 | 6 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 3 | 0 | ||
| Solids, settleable | 1 | 3 | 0 | ||
| Coliform, total general | 1 | 3 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 3 | 0 | ||
| Phosphorus, total [as P] | 0 | 2 | 0 | ||
| Nitrogen, ammonia, total [as NH3] | 0 | 2 | 0 | ||
| Flow rate | 1 | 0 | 0 | ||
| Chlorine, total residual | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES NY0105724.
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 NY0105724.
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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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 NY0105724 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.