NPDES MS0020591 · Clean Water Act
LYON POTW, Lyon, MS: NPDES MS0020591 discharge permit, effluent exceedances, inspections, penalties
LYON POTW, Lyon, Mississippi: Individual permit MS0020591; Publicly owned treatment works; Administratively continued; issued December 5, 2016, term to November 30, 2021, by MDEQ; discharges to SUNFLOWER RIVER; Sewage Treatment Facilities.
- E. coli: 0 limits, 10 violations of any kind, 4 effluent exceedances, latest December 31, 2024, largest 490% over the limit.
- Coliform, fecal general: 2 limits, 26 violations of any kind, 2 effluent exceedances, latest December 31, 2021, largest 333% over the limit.
- Chlorine, total residual: 2 limits, 31 violations of any kind, 1 effluent exceedance, latest December 31, 2025, largest 20% over the limit.
- BOD, 5-day, percent removal: 1 limit, 16 violations of any kind, 1 effluent exceedance, latest December 31, 2023, largest 14% over the limit.
- Oxygen, dissolved [DO]: 1 limit, 14 violations of any kind, 1 effluent exceedance, latest December 31, 2015, largest 19% over the limit.
- BOD, 5-day, 20 deg. C: 8 limits, 120 violations of any kind.
- Solids, total suspended: 8 limits, 120 violations of any kind.
- pH: 2 limits, 30 violations of any kind.
- Flow, in conduit or thru treatment plant: 2 limits, 30 violations of any kind.
- Nitrogen, total [as N]: 0 limits, 16 violations of any kind.
- Phosphorus, total [as P]: 0 limits, 16 violations of any kind.
Mississippi holds 336 Publicly owned treatment works coverages of this permit type in EPA’s file; 52 were issued before MS0020591.
Coverages issued nearest MS0020591
- 2016-09-21: GREENVILLE POTW, Greenville: MS0020184
- 2016-09-21: ABBEVILLE POTW, Abbeville: MS0061671
- 2016-09-29: GLOSTER POTW, Gloster: MS0020818
- 2016-09-29: ALLIGATOR POTW, Alligator: MS0042196
- 2016-11-14: RICHTON POTW, Richton: MS0024686
- 2016-12-08: RALEIGH POTW, Raleigh: MS0036331
- 2016-12-08: JACKSON POTW - TRAHON AND BIG CREEK WWTF, Jackson: MS0044059, held by JACKSON POTW, TRAHON AND BIG CREEK
- 2016-12-20: OSYKA POTW, Osyka: MS0024759
- 2016-12-20: COMO POTW, Como: MS0030104
- 2016-12-20: MARIETTA POTW, HCR LAGOON, Marietta: MS0057088
LYON POTW among its neighbors
5 discharge permits are in subwatershed HUC 080302070100; MS0020591 is one. Its county: 28, 1 major; MS0020591 is minor permit.
Other permits in subwatershed HUC 080302070100
- CLARKSDALE COAHOMA COUNTY AIRPORT, Clarksdale: MSR002517, minor, term to 2025-11-30
- COAHOMA POTW, Coahoma: MS0044237, minor, term to 2019-12-31
- GREEN ACRES WATER ASSOC INC, LANE ACRES SUBDIVISION, Lyon: MS0032166, minor, term to 2023-04-30
- JONESTOWN POTW, Jonestown: MS0021075, minor, term to 2024-08-31
Identity
| Facility | LYON POTW |
|---|---|
| Permittee | LYON POTW |
| NPDES ID | MS0020591 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Minor |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 5, 2016 |
| Expires | November 30, 2021 |
| Agency | MDEQ |
| Address | Lyon, MS 38645 |
| Receiving water | SUNFLOWER RIVER |
| Program components on file | POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
NPDES MS0020591: effluent limits and exceedances
LYON POTW (NPDES MS0020591): 11 pollutants on file, 8 limited; 11 with a violation of any kind, 5 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| E. coli | 0 | 10 | 4 | December 31, 2024 | 490% over the limit |
| Coliform, fecal general | 2 | 26 | 2 | December 31, 2021 | 333% over the limit |
| Chlorine, total residual | 2 | 31 | 1 | December 31, 2025 | 20% over the limit |
| BOD, 5-day, percent removal | 1 | 16 | 1 | December 31, 2023 | 14% over the limit |
| Oxygen, dissolved [DO] | 1 | 14 | 1 | December 31, 2015 | 19% over the limit |
| BOD, 5-day, 20 deg. C | 8 | 120 | 0 | ||
| Solids, total suspended | 8 | 120 | 0 | ||
| pH | 2 | 30 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 30 | 0 | ||
| Nitrogen, total [as N] | 0 | 16 | 0 | ||
| Phosphorus, total [as P] | 0 | 16 | 0 |
NPDES MS0020591: inspections, violations and enforcement
NPDES MS0020591 (LYON POTW): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES MS0020591
NPDES MS0020591: one email when its EPA record changes — $99/month.
Permits near NPDES MS0020591
NPDES MS0020591: 11 pollutant rows, 0 dated events; ICIS-NPDES download, loaded October 14, 2026.