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Sewage treatment plant, Claflin, Kansas. NPDES permit KS0026441, in force until Oct 31, 2027. Last 12 months: over a limit 10 times (last August 2026), 2 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 14 mg/L | ≤ 12.5 mg/L | 12% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 14 mg/L | ≤ 8.9 mg/L | 57% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 10.5 mg/L | ≤ 7.2 mg/L | 46% |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | 10.5 mg/L | ≤ 4.4 mg/L | 139% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 9.12 mg/L | ≤ 4.4 mg/L | 107% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 9.12 mg/L | ≤ 2.8 mg/L | 226% |
| July 2026 | Nitrogen, ammonia total [as N], daily maximum | 4.42 mg/L | ≤ 3.6 mg/L | 23% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 4.42 mg/L | ≤ 2.3 mg/L | 92% |
| August 2026 | E. coli, monthly geometric mean | 24196 #/100mL | ≤ 3843 #/100mL | 530% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | 3.53 mg/L | ≤ 2.5 mg/L | 41% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.5 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.6 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.9 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.1 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.3 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.9 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.4 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.5 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.8 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 8.9 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5.9 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.5 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.5 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.5 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.5 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.6 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.5 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.2 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.9 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.2 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.4 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.5 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Oct | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | 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] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 001 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | monthly average | report only (lb/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| E. coli | monthly geometric mean | ≤ 3843 #/100mL | all year | 001 |
| Nitrogen, Total As N | daily average | report only (mg/L) | all year | 001 |
| Nitrogen, Total As N | EPA's "DPD AVG" | report only (lb/d) | all year | 001 |
| Phosphorus, Total As P | daily average | report only (mg/L) | all year | 001 |
| Phosphorus, Total As P | EPA's "DPD AVG" | report only (lb/d) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
Cited limits by parameter: Kansas's rules and the federal ones.
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