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Sewage treatment plant, Monument Valley Overlook, NN. NPDES permit NN0025178 expired Apr 30, 2026; its limits still apply. Last 12 months: no values over a limit, 6 of 33 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | highest weekly average | ≤ 65 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | highest weekly average | ≤ 65 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 188 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 188 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | highest weekly average | ≤ 271 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | highest weekly average | ≤ 271 lb/d | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | highest weekly average | ≤ 65 mg/L | all year | 001 |
| Solids, total suspended | highest weekly average | ≤ 65 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 188 lb/d | all year | 001 |
| Solids, total suspended | monthly average | ≤ 188 lb/d | all year | 001 |
| Solids, total suspended | highest weekly average | ≤ 271 lb/d | all year | 001 |
| Solids, total suspended | highest weekly average | ≤ 271 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 Ratio | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 Ratio | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .5 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | ≤ .5 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .5 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .5 MGD | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 11 ug/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 11 ug/L | all year | 001 |
| E. coli | geometric mean | ≤ 126 #/100mL | all year | 001 |
| E. coli | geometric mean | ≤ 126 #/100mL | all year | 001 |
| E. coli | maximum | ≤ 575 #/100mL | all year | 001 |
| E. coli | maximum | ≤ 575 #/100mL | all year | 001 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 65 % | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 65 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 65 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 65 % | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF1 |
| BOD, 5-day, 20 deg. C | highest weekly average | report only (mg/L) | all year | INF1 |
| BOD, 5-day, 20 deg. C | highest weekly average | report only (mg/L) | all year | INF1 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | INF1 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | INF1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | INF1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | INF1 |
| BOD, 5-day, 20 deg. C | highest weekly average | report only (lb/d) | all year | INF1 |
| BOD, 5-day, 20 deg. C | highest weekly average | report only (lb/d) | all year | INF1 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF1 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF1 |
| Solids, total suspended | highest weekly average | report only (mg/L) | all year | INF1 |
| Solids, total suspended | highest weekly average | report only (mg/L) | all year | INF1 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | INF1 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | INF1 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | INF1 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | INF1 |
| Solids, total suspended | highest weekly average | report only (lb/d) | all year | INF1 |
| Solids, total suspended | highest weekly average | report only (lb/d) | all year | INF1 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | INF1 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | INF1 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | INF1 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | INF1 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | INF1 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | INF1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF2 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF2 |
| BOD, 5-day, 20 deg. C | highest weekly average | report only (mg/L) | all year | INF2 |
| BOD, 5-day, 20 deg. C | highest weekly average | report only (mg/L) | all year | INF2 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | INF2 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | INF2 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | INF2 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | INF2 |
| BOD, 5-day, 20 deg. C | highest weekly average | report only (lb/d) | all year | INF2 |
| BOD, 5-day, 20 deg. C | highest weekly average | report only (lb/d) | all year | INF2 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF2 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF2 |
| Solids, total suspended | highest weekly average | report only (mg/L) | all year | INF2 |
| Solids, total suspended | highest weekly average | report only (mg/L) | all year | INF2 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | INF2 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | INF2 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | INF2 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | INF2 |
| Solids, total suspended | highest weekly average | report only (lb/d) | all year | INF2 |
| Solids, total suspended | highest weekly average | report only (lb/d) | all year | INF2 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | INF2 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | INF2 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | INF2 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | INF2 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | INF2 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | INF2 |
Cited limits by parameter: the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/NN0025178 · MCP: https://passage-data.com/mcp