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Sewage treatment plant, Greentop, Missouri. NPDES permit MO0091642, in force until Jun 30, 2028. Last 12 months: over a limit 27 times (last July 2026), 5 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | E. coli, 30-day geometric mean | 10800 | ≤ 206 #/100mL | 5143% |
| October 2025 | E. coli, 7-day geometric mean | 10080 | ≤ 1030 #/100mL | 879% |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 9.3 | ≤ 2.6 mg/L | 258% |
| November 2025 | Nitrogen, ammonia total [as N], daily maximum | 17 | ≤ 12.1 mg/L | 40% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 17 | ≤ 3.1 mg/L | 448% |
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 21.6 | ≤ 10.1 mg/L | 114% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 21.6 | ≤ 2.7 mg/L | 700% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 4.8 | ≤ 3.1 mg/L | 55% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 34.5 | ≤ 10.1 mg/L | 242% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 34.5 | ≤ 2.7 mg/L | 1178% |
| March 2026 | BOD, 5-day, 20 deg. C, monthly average | 51.9 | ≤ 45 mg/L | 15% |
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 45.7 | ≤ 10.1 mg/L | 352% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 45.7 | ≤ 2.7 mg/L | 1593% |
| April 2026 | BOD, 5-day, 20 deg. C, monthly average | 53.1 | ≤ 45 mg/L | 18% |
| April 2026 | E. coli, 30-day geometric mean | 456 | ≤ 206 #/100mL | 121% |
| April 2026 | Nitrogen, ammonia total [as N], daily maximum | 51.3 | ≤ 10.1 mg/L | 408% |
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 51.3 | ≤ 2.3 mg/L | 2130% |
| April 2026 | Solids, total suspended, monthly average | 112 | ≤ 80 mg/L | 40% |
| May 2026 | E. coli, 30-day geometric mean | 306 | ≤ 206 #/100mL | 49% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 34.2 | ≤ 12.1 mg/L | 183% |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | 34.2 | ≤ 1.9 mg/L | 1700% |
| May 2026 | Solids, total suspended, monthly average | 93.3 | ≤ 80 mg/L | 17% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 19.8 | ≤ 12.1 mg/L | 64% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 19.8 | ≤ 1.5 mg/L | 1220% |
| June 2026 | Solids, suspended percent removal, monthly average minimum | 1.754 | ≥ 65 % | 181% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 6.6 | ≤ 1.1 mg/L | 500% |
| July 2026 | pH, minimum | 0 | ≥ 6.5 SU | — |
| 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 | ≤ 120 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 80 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, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Jan, Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.1 mg/L | Jan, Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.1 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.6 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.3 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.9 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.7 mg/L | Sep | 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 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 |
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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