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Sewage treatment plant, major discharger, St Joseph, Missouri. NPDES permit MO0023043 expired Nov 30, 2025; its limits still apply. Last 12 months: over a limit once (last April 2026), 2 required values missing, 2 of 23 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| April 2026 | Solids, total suspended, weekly average | 72 | ≤ 45 mg/L | 60% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Sulfate [as S] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate [as S] | monthly average | report only (mg/L) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 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 | ≤ 37.2 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 45.1 mg/L | Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 37.2 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 37.2 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 37.2 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 45.1 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 37.2 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 45.1 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 45.1 mg/L | Jan–Mar | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 20.4 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 45.1 mg/L | Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 24.4 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 37.2 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 37.2 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 36.2 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 16.6 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 20.9 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 45.1 mg/L | Jan–Mar | 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 |
| Fluoride | daily maximum | report only (mg/L) | all year | 001 |
| Fluoride | monthly average | report only (mg/L) | all year | 001 |
| Cobalt, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Cobalt, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Boron, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Boron, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Barium, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Barium, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Chloride | daily maximum | report only (mg/L) | all year | 001 |
| Chloride | 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 |
| Glyphosate, total | daily maximum | report only (ug/L) | all year | 001 |
| Glyphosate, total | monthly average | report only (ug/L) | all year | 001 |
| BOD, carbonaceous [20 day, 20 C] | weekly average | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [20 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, total suspended | daily maximum | 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 |
| BOD, carbonaceous [20 day, 20 C] | daily maximum | report only (mg/L) | all year | INF |
| BOD, carbonaceous [20 day, 20 C] | monthly average | report only (mg/L) | all year | INF |
Cited limits by parameter: Missouri's rules and the federal ones.
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