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Sewage treatment plant, Unknown, Wyoming. NPDES permit WY0025895 expired Jun 30, 2025; its limits still apply. Last 12 months: no values over a limit, 3 required values missing, 28 of 78 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 90 mg/L | all year | 001 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 100 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 150 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 300 mg/L | all year | 001 |
| Duration | monthly total | report only (d) | all year | 001 |
| Duration | monthly total | report only (d) | all year | 001 |
| E. coli | monthly average | ≤ 2572 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 001 |
| E. coli | monthly geometric mean | ≤ 1089 MPN/100mL | Apr–Dec | 001 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 001 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Apr–Dec | 001 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 001 |
| Flow | monthly average | report only (MGD) | all year | 001 |
| Flow | monthly average | report only (MGD) | all year | 001 |
| Flow | daily maximum | report only (MGD) | all year | 001 |
| Flow | daily maximum | report only (MGD) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 90 mg/L | all year | 002 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 100 mg/L | all year | 002 |
| Solids, total suspended | weekly average | ≤ 150 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 300 mg/L | all year | 002 |
| Duration | monthly total | report only (d) | all year | 002 |
| Duration | monthly total | report only (d) | all year | 002 |
| E. coli | monthly average | ≤ 2572 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 002 |
| E. coli | monthly geometric mean | ≤ 1089 MPN/100mL | Apr–Dec | 002 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 002 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Apr–Dec | 002 |
| Solids, total dissolved [TDS] | daily maximum | report only (mg/L) | all year | 002 |
| Flow | monthly average | report only (MGD) | all year | 002 |
| Flow | monthly average | report only (MGD) | all year | 002 |
| Flow | daily maximum | report only (MGD) | all year | 002 |
| Flow | daily maximum | report only (MGD) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 003 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 003 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 003 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 90 mg/L | all year | 003 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 003 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 003 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | ≤ 100 mg/L | all year | 003 |
| Solids, total suspended | weekly average | ≤ 150 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 300 mg/L | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 003 |
| Duration | monthly total | report only (d) | all year | 003 |
| Duration | monthly total | report only (d) | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ .26 mg/L | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ .26 mg/L | all year | 003 |
| Chlorine, total residual | monthly average | ≤ .15 mg/L | all year | 003 |
| Chlorine, total residual | monthly average | ≤ .15 mg/L | all year | 003 |
| E. coli | monthly average | ≤ 2572 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 003 |
| E. coli | monthly geometric mean | ≤ 1089 MPN/100mL | Apr–Dec | 003 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 003 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Apr–Dec | 003 |
| Nitrogen, Ammonia Total | monthly average | ≤ 31.74 mg/L | Apr–Dec | 003 |
| Nitrogen, Ammonia Total | monthly average | ≤ 47.42 mg/L | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 003 |
| Nitrogen, Ammonia Total | daily maximum | ≤ 75.24 mg/L | Apr–Dec | 003 |
| Nitrogen, Ammonia Total | daily maximum | ≤ 154.04 mg/L | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 003 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 003 |
| Flow | monthly average | report only (MGD) | all year | 003 |
| Flow | monthly average | report only (MGD) | all year | 003 |
| Flow | daily maximum | report only (MGD) | all year | 003 |
| Flow | daily maximum | report only (MGD) | all year | 003 |
| BOD, 5-day, percent removal | quarterly minimum | ≥ 65 % | all year | 003 |
| Produced water, oil and grease | daily maximum | report only (mg/L) | all year | 003 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 004 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 004 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 90 mg/L | all year | 004 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 004 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 004 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 100 mg/L | all year | 004 |
| Solids, total suspended | weekly average | ≤ 150 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 300 mg/L | all year | 004 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 004 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 004 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 004 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 004 |
| Duration | monthly total | report only (d) | all year | 004 |
| Duration | monthly total | report only (d) | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ .26 mg/L | all year | 004 |
| Chlorine, total residual | daily maximum | ≤ .26 mg/L | all year | 004 |
| Chlorine, total residual | monthly average | ≤ .15 mg/L | all year | 004 |
| Chlorine, total residual | monthly average | ≤ .15 mg/L | all year | 004 |
| E. coli | monthly average | ≤ 2572 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 004 |
| E. coli | monthly geometric mean | ≤ 1089 MPN/100mL | Apr–Dec | 004 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 004 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Apr–Dec | 004 |
| Nitrogen, Ammonia Total | monthly average | ≤ 31.74 mg/L | Apr–Dec | 004 |
| Nitrogen, Ammonia Total | monthly average | ≤ 47.42 mg/L | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 004 |
| Nitrogen, Ammonia Total | daily maximum | ≤ 75.24 mg/L | Apr–Dec | 004 |
| Nitrogen, Ammonia Total | daily maximum | ≤ 154.04 mg/L | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 004 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 004 |
| Flow | monthly average | report only (MGD) | all year | 004 |
| Flow | monthly average | report only (MGD) | all year | 004 |
| Flow | daily maximum | report only (MGD) | all year | 004 |
| Flow | daily maximum | report only (MGD) | all year | 004 |
| BOD, 5-day, percent removal | quarterly minimum | ≥ 65 % | all year | 004 |
| Produced water, oil and grease | daily maximum | report only (mg/L) | all year | 004 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 005 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 005 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 005 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 005 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 90 mg/L | all year | 005 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 005 |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year | 005 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 005 |
| pH | instantaneous minimum | ≥ 6.5 SU | all year | 005 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 005 |
| Solids, total suspended | monthly average | ≤ 100 mg/L | all year | 005 |
| Solids, total suspended | weekly average | ≤ 150 mg/L | all year | 005 |
| Solids, total suspended | daily maximum | ≤ 300 mg/L | all year | 005 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 005 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 005 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 005 |
| Duration | monthly total | report only (d) | all year | 005 |
| Duration | monthly total | report only (d) | all year | 005 |
| Chlorine, total residual | daily maximum | ≤ .26 mg/L | all year | 005 |
| Chlorine, total residual | daily maximum | ≤ .26 mg/L | all year | 005 |
| Chlorine, total residual | monthly average | ≤ .15 mg/L | all year | 005 |
| Chlorine, total residual | monthly average | ≤ .15 mg/L | all year | 005 |
| E. coli | monthly geometric mean | ≤ 1089 MPN/100mL | Apr–Dec | 005 |
| E. coli | monthly average | ≤ 2572 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 005 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Apr–Dec | 005 |
| E. coli | daily maximum | ≤ 7958 MPN/100mL | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 005 |
| Nitrogen, Ammonia Total | monthly average | ≤ 47.42 mg/L | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 005 |
| Nitrogen, Ammonia Total | monthly average | ≤ 31.74 mg/L | Apr–Dec | 005 |
| Nitrogen, Ammonia Total | daily maximum | ≤ 154.04 mg/L | Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec | 005 |
| Nitrogen, Ammonia Total | daily maximum | ≤ 75.24 mg/L | Apr–Dec | 005 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 005 |
| Flow | monthly average | report only (MGD) | all year | 005 |
| Flow | monthly average | report only (MGD) | all year | 005 |
| Flow | daily maximum | report only (MGD) | all year | 005 |
| Flow | daily maximum | report only (MGD) | all year | 005 |
| BOD, 5-day, percent removal | quarterly minimum | ≥ 65 % | all year | 005 |
| Produced water, oil and grease | daily maximum | report only (mg/L) | all year | 005 |
| BOD, 5-day, 20 deg. C | instantaneous maximum | report only (mg/L) | Apr–Dec | DFC1 |
| BOD, 5-day, 20 deg. C | instantaneous maximum | report only (mg/L) | Apr–Dec | DFC1 |
| Solids, total suspended | daily maximum | report only (mg/L) | Apr–Dec | DFC1 |
| Solids, total suspended | daily maximum | report only (mg/L) | Apr–Dec | DFC1 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Apr–Dec | DFC1 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Apr–Dec | DFC1 |
| Chlorine, total residual | daily maximum | report only (mg/L) | Apr–Dec | DFC1 |
| Chlorine, total residual | daily maximum | report only (mg/L) | Apr–Dec | DFC1 |
| E. coli | daily maximum | report only (CFU/100mL) | Apr–Dec | DFC1 |
| E. coli | daily maximum | report only (CFU/100mL) | Apr–Dec | DFC1 |
| Ammonia & ammonium- total | instantaneous maximum | report only (mg/L) | Apr–Dec | DFC1 |
| Ammonia & ammonium- total | instantaneous maximum | report only (mg/L) | Apr–Dec | DFC1 |
| Flow, total | daily maximum | ≤ .14 MGD | all year | SUM |
| Flow, total | daily maximum | ≤ .14 MGD | all year | SUM |
| Flow, total | monthly average | report only (MGD) | all year | SUM |
| Flow, total | monthly average | report only (MGD) | all year | SUM |
| BOD, 5-day, 20 deg. C | instantaneous maximum | report only (mg/L) | Apr–Dec | UFC1 |
| BOD, 5-day, 20 deg. C | instantaneous maximum | report only (mg/L) | Apr–Dec | UFC1 |
| Solids, total suspended | daily maximum | report only (mg/L) | Apr–Dec | UFC1 |
| Solids, total suspended | daily maximum | report only (mg/L) | Apr–Dec | UFC1 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Apr–Dec | UFC1 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Apr–Dec | UFC1 |
| Chlorine, total residual | daily maximum | report only (mg/L) | Apr–Dec | UFC1 |
| Chlorine, total residual | daily maximum | report only (mg/L) | Apr–Dec | UFC1 |
| E. coli | daily maximum | report only (CFU/100mL) | Apr–Dec | UFC1 |
| E. coli | daily maximum | report only (CFU/100mL) | Apr–Dec | UFC1 |
| Ammonia & ammonium- total | instantaneous maximum | report only (mg/L) | Apr–Dec | UFC1 |
| Ammonia & ammonium- total | instantaneous maximum | report only (mg/L) | Apr–Dec | UFC1 |
Cited limits by parameter: Wyoming's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/WY0025895 · MCP: https://passage-data.com/mcp