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Civic And Social Associations, Keytesville, Missouri. NPDES permit MO0088510 expired Sep 30, 2026; its limits still apply. Last 12 months: over a limit 23 times (last August 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | E. coli, 30-day geometric mean | > 2419.6 | ≤ 206 #/100mL | — |
| October 2025 | E. coli, daily maximum | > 2419.6 | ≤ 1030 #/100mL | — |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 2.67 | ≤ 2.6 mg/L | 3% |
| December 2025 | BOD, 5-day, 20 deg. C, monthly average | 44 | ≤ 30 mg/L | 47% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 2.92 | ≤ 2.7 mg/L | 8% |
| March 2026 | BOD, 5-day, 20 deg. C, monthly average | 37.7 | ≤ 30 mg/L | 26% |
| April 2026 | Chlorine, total residual, daily maximum | 480 | ≤ 18 ug/L | 2567% |
| April 2026 | Chlorine, total residual, monthly average | 30 | ≤ 9 ug/L | 233% |
| May 2026 | BOD, 5-day, 20 deg. C, monthly average | 30.4 | ≤ 30 mg/L | 1% |
| May 2026 | Chlorine, total residual, monthly average | 10 | ≤ 9 ug/L | 11% |
| June 2026 | BOD, 5-day, 20 deg. C, monthly average | 34.3 | ≤ 30 mg/L | 14% |
| June 2026 | Chlorine, total residual, daily maximum | 2200 | ≤ 18 ug/L | 12122% |
| June 2026 | Chlorine, total residual, monthly average | 120 | ≤ 9 ug/L | 1233% |
| July 2026 | BOD, 5-day, 20 deg. C, monthly average | 47 | ≤ 30 mg/L | 57% |
| July 2026 | BOD, 5-day, 20 deg. C, weekly average | 47 | ≤ 45 mg/L | 4% |
| July 2026 | Chlorine, total residual, daily maximum | 2250 | ≤ 18 ug/L | 12400% |
| July 2026 | Chlorine, total residual, monthly average | 110 | ≤ 9 ug/L | 1122% |
| July 2026 | E. coli, 30-day geometric mean | 231 | ≤ 206 #/100mL | 12% |
| August 2026 | BOD, 5-day, 20 deg. C, monthly average | 33.4 | ≤ 30 mg/L | 11% |
| August 2026 | Chlorine, total residual, daily maximum | 2500 | ≤ 18 ug/L | 13789% |
| August 2026 | Chlorine, total residual, monthly average | 750 | ≤ 9 ug/L | 8233% |
| August 2026 | E. coli, 30-day geometric mean | 325.7 | ≤ 206 #/100mL | 58% |
| August 2026 | Solids, total suspended, monthly average | 40 | ≤ 30 mg/L | 33% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Jan, Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Jun |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | Aug |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.7 mg/L | Sep |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.1 mg/L | Jan, Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | Jun |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.6 mg/L | Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.3 mg/L | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.9 mg/L | May |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.1 mg/L | Jul |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Feb, Mar, Dec |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Chlorine, total residual | daily maximum | ≤ 18 ug/L | Apr–Oct |
| Chlorine, total residual | monthly average | ≤ 9 ug/L | Apr–Oct |
| E. coli | daily maximum | ≤ 1030 #/100mL | Apr–Oct |
| E. coli | 30-day geometric mean | ≤ 206 #/100mL | Apr–Oct |
Cited limits by parameter: Missouri's rules and the federal ones.
Same industry: the 212 Membership Organizations permits in Missouri.
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