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Sewage treatment plant, Elsberry, Missouri. NPDES permit MO0054691, in force until Dec 31, 2029. Last 12 months: over a limit 24 times (last June 2026), 29 required values missing, 6 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Nitrogen, ammonia total [as N], daily maximum | 5.9 | ≤ 1.6 mg/L | 269% |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 5.9 | ≤ 1.2 mg/L | 392% |
| October 2025 | Solids, total suspended, monthly average | 100 | ≤ 70 mg/L | 43% |
| November 2025 | Nitrogen, ammonia total [as N], daily maximum | 2.9 | ≤ 1.6 mg/L | 81% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 2.9 | ≤ 1.2 mg/L | 142% |
| November 2025 | Solids, total suspended, monthly average | 100 | ≤ 70 mg/L | 43% |
| December 2025 | BOD, 5-day, percent removal, monthly minimum | 81 | ≥ 85 % | 27% |
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 13.7 | ≤ 1.6 mg/L | 756% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 13.7 | ≤ 1.2 mg/L | 1042% |
| January 2026 | Nitrogen, ammonia total [as N], daily maximum | 20.2 | ≤ 1.6 mg/L | 1163% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 20.2 | ≤ 1.2 mg/L | 1583% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 30.4 | ≤ 1.6 mg/L | 1800% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 30.4 | ≤ 1.6 mg/L | 1800% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 30.4 | ≤ 1.2 mg/L | 2433% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 30.4 | ≤ 1.2 mg/L | 2433% |
| March 2026 | BOD, 5-day, percent removal, monthly minimum | 80 | ≥ 85 % | 33% |
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 33.9 | ≤ 1.6 mg/L | 2019% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 33.9 | ≤ 1.2 mg/L | 2725% |
| April 2026 | Nitrogen, ammonia total [as N], daily maximum | 9.8 | ≤ 1 mg/L | 880% |
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 9.8 | ≤ .6 mg/L | 1533% |
| May 2026 | BOD, 5-day, percent removal, monthly minimum | 53 | ≥ 85 % | 213% |
| May 2026 | Solids, total suspended, monthly average | 84 | ≤ 70 mg/L | 20% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 6.1 | ≤ 1 mg/L | 510% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 6.1 | ≤ .6 mg/L | 917% |
| 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 | ≤ 1.6 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1 mg/L | Apr–Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.2 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .6 mg/L | Apr–Sep | 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 |
| BOD, 5-day, percent removal | monthly minimum | ≥ 85 % | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | INF |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 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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On EPA ECHO: Facility report · DMR history
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