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Sewage treatment plant, Morehouse, Missouri. NPDES permit MO0030821 expired Jun 30, 2026; its limits still apply. Last 12 months: over a limit 26 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | BOD, 5-day, percent removal, monthly average minimum | 56 | ≥ 65 % | 26% |
| October 2025 | E. coli, 30-day geometric mean | > 2420 | ≤ 206 #/100mL | — |
| October 2025 | E. coli, 7-day geometric mean | > 2420 | ≤ 1030 #/100mL | — |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 5.18 | ≤ 2 mg/L | 159% |
| October 2025 | Solids, suspended percent removal, monthly average minimum | 27 | ≥ 65 % | 109% |
| November 2025 | BOD, 5-day, 20 deg. C, monthly average | 69.1 | ≤ 45 mg/L | 54% |
| November 2025 | BOD, 5-day, 20 deg. C, weekly average | 69.1 | ≤ 65 mg/L | 6% |
| November 2025 | BOD, 5-day, percent removal, monthly average minimum | 30 | ≥ 65 % | 100% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 9.72 | ≤ 3.9 mg/L | 149% |
| November 2025 | Solids, suspended percent removal, monthly average minimum | 22 | ≥ 65 % | 123% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 10.9 | ≤ 3.5 mg/L | 211% |
| December 2025 | Solids, suspended percent removal, monthly average minimum | 47 | ≥ 65 % | 51% |
| December 2025 | Toxicity [acute], Ceriodaphnia dubia, daily maximum | < 1 | ≤ .3 toxic | 233% |
| December 2025 | Toxicity [acute], Pimephales promelas [Fathead Minnow], daily maximum | < 1 | ≤ .3 toxic | 233% |
| January 2026 | Nitrogen, ammonia total [as N], daily maximum | 20.1 | ≤ 17 mg/L | 18% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 20.1 | ≤ 3.9 mg/L | 415% |
| January 2026 | Solids, suspended percent removal, monthly average minimum | 52 | ≥ 65 % | 37% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 19.7 | ≤ 17 mg/L | 16% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 19.7 | ≤ 3.9 mg/L | 405% |
| February 2026 | Solids, suspended percent removal, monthly average minimum | 61 | ≥ 65 % | 11% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 13.1 | ≤ 3.9 mg/L | 236% |
| March 2026 | Solids, suspended percent removal, monthly average minimum | 64 | ≥ 65 % | 3% |
| April 2026 | E. coli, 30-day geometric mean | > 2420 | ≤ 206 #/100mL | — |
| April 2026 | E. coli, 7-day geometric mean | > 2420 | ≤ 1030 #/100mL | — |
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 2.9 | ≤ 2.8 mg/L | 4% |
| April 2026 | Solids, suspended percent removal, monthly average minimum | 34 | ≥ 65 % | 89% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 65 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | all year | 001 |
| pH | minimum | ≥ 6.5 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | weekly average | ≤ 110 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 70 mg/L | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 17 mg/L | Jan, Feb, Mar, Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.4 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.4 mg/L | Jun, Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.4 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.4 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 23 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.9 mg/L | Jan, Feb, Mar, Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.5 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.7 mg/L | Jun, Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.8 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.4 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.9 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.2 mg/L | Aug | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| E. coli | 7-day geometric mean | ≤ 1030 #/100mL | Apr–Oct | 001 |
| E. coli | 30-day geometric mean | ≤ 206 #/100mL | Apr–Oct | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | ≤ .3 toxic | all year | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ .3 toxic | 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 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | INF |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | INF |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | INF |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | INF |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | INF |
Cited limits by parameter: Missouri's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/MO0030821 · MCP: https://passage-data.com/mcp