Clean Water Act discharge permit · NPDES OH0027197
PORTSMOUTH LAWSON RUN WWTP, Portsmouth, OH: NPDES OH0027197 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 46Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
PORTSMOUTH LAWSON RUN WWTP, held by Portsmouth Lawson Run WWTP, holds NPDES permit OH0027197. EPA’s file records it issued December 3, 2024 and expiring June 30, 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 | PORTSMOUTH LAWSON RUN WWTP |
|---|---|
| Permittee as filed | Portsmouth Lawson Run WWTP |
| NPDES ID | OH0027197 |
| 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 | December 3, 2024 |
| Expiration date | June 30, 2025 |
| Address | Portsmouth, OH 45662 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Carroll Run-Scioto River (HUC 050600021605) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 50Pollutants on file
- 46Under a numeric limit
- 47With 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 |
|---|---|---|---|---|---|
| Oil and grease, hexane extr method | 1 | 17 | 13 | November 30, 2023 | 86,791% over the limit |
| Solids, total suspended | 26 | 45 | 11 | April 30, 2015 | 93,417% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 26 | 43 | 9 | March 31, 2012 | 38,156% over the limit |
| pH, minimum | 2 | 11 | 9 | September 30, 2012 | |
| Chlorine, total residual | 1 | 9 | 7 | October 31, 2011 | 2,558% over the limit |
| E. coli, MTEC-MF | 2 | 6 | 6 | August 31, 2023 | 43% over the limit |
| Copper, total recoverable | 2 | 7 | 3 | March 31, 2012 | 13% over the limit |
| Coliform, fecal MF, MFC broth, 44.5 C | 2 | 6 | 2 | September 30, 2016 | 196% over the limit |
| Overflows | 22 | 30 | 0 | ||
| Mercury, total low level | 6 | 14 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 8 | 0 | ||
| Zinc, total recoverable | 2 | 6 | 0 | ||
| Biosolids weight indluding admixtures | 4 | 4 | 0 | ||
| Temperature, water deg. centigrade | 2 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 4 | 0 | ||
| Nitrogen, ammonia in bottom deposits | 2 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 4 | 0 | ||
| Nitrite plus nitrate in bottom deposits | 2 | 4 | 0 | ||
| Phosphorous, total, in bottom deposits | 2 | 4 | 0 | ||
| Potassium, in bottom deposits | 2 | 4 | 0 | ||
| Cadmium, total recoverable | 2 | 4 | 0 | ||
| Rainfall | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Sludge weight, dry | 2 | 4 | 0 | ||
| pH | 0 | 4 | 0 | ||
| Flow, maximum during 24 hr period | 0 | 4 | 0 | ||
| Arsenic, dry weight | 1 | 3 | 0 | ||
| Cadmium, in bottom deposits [dry wgt] | 1 | 3 | 0 | ||
| Copper in bottom deposits [dry wgt] | 1 | 3 | 0 | ||
| Lead, total dry weight [as Pb] | 1 | 3 | 0 | ||
| Nickel, tot in bottom deposits [dry wgt] | 1 | 3 | 0 | ||
| Zinc in bottom deposits [dry wgt] | 1 | 3 | 0 | ||
| Selenium, dry weight | 1 | 3 | 0 | ||
| Mercury, tot in bot deposits [dry wgt] | 1 | 3 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 1 | 3 | 0 | ||
| Phosphorus, total [as P] | 2 | 2 | 0 | ||
| Nickel, total recoverable | 2 | 2 | 0 | ||
| Lead, total recoverable | 2 | 2 | 0 | ||
| Chromium, total recoverable | 2 | 2 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 2 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 2 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 2 | 0 | ||
| pH, maximum | 2 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 2 | 0 | ||
| Phosphate, ortho [as PO4] | 0 | 2 | 0 | ||
| Fecal coliform in sludge, CFU/gram | 1 | 1 | 0 | ||
| Fecal coliform | 0 | 1 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 20 | 0 | 0 | ||
| Phosphate, ortho, dissolved [as P] | 2 | 0 | 0 | ||
| Solids, total dissolved- 180 deg. C | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 16, 2024 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| September 7, 2022 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| July 28, 2021 | WW SSO - Failure to report violation that may endanger public health 122.41(l)(7) | ST6 |
| April 8, 2021 | WW SSO - Improper Operation and Maintenance | ST6 |
| April 8, 2021 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| April 8, 2021 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | 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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.