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Sewage treatment plant, major discharger, Carrollton, Missouri. NPDES permit MO0096318, in force until Mar 31, 2031. Last 12 months: over a limit 2 times (last March 2026), 18 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 9.43 | ≤ 3.4 mg/L | 177% |
| March 2026 | pH, minimum | 4 | ≥ 6 SU | — |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 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 | report only (mg/L) | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.5 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.5 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.5 mg/L | Jan, Feb, Mar, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.5 mg/L | Apr, May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.5 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.5 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.2 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.1 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Jan, Feb, Mar, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.6 mg/L | Apr, May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.1 mg/L | Oct | 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 |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, total recoverable | monthly average | report only (ug/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 | weekly average | ≤ 1030 #/100mL | Apr–Oct | 001 |
| E. coli | geometric mean | ≤ 206 #/100mL | Apr–Oct | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (toxic) | all year | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | report only (toxic) | all year | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | report only (toxic) | all year | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | report only (toxic) | all year | 001 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | 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 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | SM1 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | SM1 |
Cited limits by parameter: Missouri's rules and 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/MO0096318 · MCP: https://passage-data.com/mcp