Clean Water Act discharge permit · NPDES MD0020265
RISING SUN WWTP, Rising Sun, MD: NPDES MD0020265 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
RISING SUN WWTP holds NPDES permit MD0020265, which discharges to Stone Run. EPA’s file records it issued January 21, 2016 and expiring February 28, 2021. 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 | RISING SUN WWTP |
|---|---|
| Permittee as filed | RISING SUN WWTP |
| NPDES ID | MD0020265 |
| 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 | January 21, 2016 |
| Expiration date | February 28, 2021 |
| Issuing agency | MARYLAND DEPARTMENT OF THE ENVIRONMENT |
| Address | Rising Sun, MD 21911 |
| Receiving water | STONE RUN |
| Subwatershed | Basin Run-Octoraro Creek (HUC 020503061503) |
| 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
- 22Pollutants on file
- 14Under a numeric limit
- 22With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 16 | 407 | 403 | January 31, 2023 | 1,622% over the limit |
| Solids, total suspended | 8 | 145 | 138 | June 30, 2018 | 87% over the limit |
| Oxygen, dissolved [DO] | 3 | 103 | 97 | July 31, 2008 | 117% over the limit |
| BOD, 5-day, 20 deg. C | 12 | 89 | 57 | October 31, 2017 | 77% over the limit |
| E. coli | 2 | 15 | 13 | March 31, 2015 | 1,158% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 16 | 11 | September 30, 2003 | 48% over the limit |
| Coliform, fecal general | 0 | 3 | 2 | January 31, 2010 | 41% over the limit |
| pH | 4 | 5 | 1 | December 31, 2015 | |
| Nitrogen, total [as N] | 10 | 9 | 0 | ||
| Phosphorus, total [as P] | 10 | 6 | 0 | ||
| Aluminum, total [as Al] | 0 | 4 | 0 | ||
| 4,4'-DDT | 0 | 4 | 0 | ||
| Toxaphene | 0 | 4 | 0 | ||
| Heptachlor | 0 | 4 | 0 | ||
| Heptachlor epoxide | 0 | 4 | 0 | ||
| Temperature, water deg. fahrenheit | 12 | 3 | 0 | ||
| Flow, total | 4 | 3 | 0 | ||
| Nitrite + Nitrate total [as N] | 3 | 3 | 0 | ||
| Nitrogen, organic total [as N] | 3 | 2 | 0 | ||
| Phosphate, ortho [as P] | 3 | 2 | 0 | ||
| Toxicity, Acute | 0 | 1 | 0 | ||
| Toxicity, Chronic | 0 | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 1, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
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 MD0020265 there.
Nearby on the register
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- Every permit record in Rising Sun, A to Z
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- Every permit record in Maryland, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.