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Sewage treatment plant, Horton, Kansas. NPDES permit KS0095192 expired Jul 24, 2024; its limits still apply. Last 12 months: over a limit once (last April 2026), 15 required values missing, 12 of 18 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| April 2026 | BOD, 5-day, percent removal, minimum | 12 % | ≥ 85 % | 487% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 001 |
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 80 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 120 mg/L | all year | 001 |
| Oil and grease, hexane extr method | monthly average | ≤ 10 mg/L | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | ≤ 15 mg/L | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.47 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .71 mg/L | Mar–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.95 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.43 mg/L | Mar–Oct | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | average | report only (MGD) | all year | 001 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 2358 CFU/100mL | Jan, Feb, Mar, Nov, Dec | 001 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 262 CFU/100mL | Apr–Oct | 001 |
| BOD, 5-day, percent removal | minimum | ≥ 85 % | all year | 001 |
| Duration of discharge | event total | report only (d) | all year | 001 |
| Flow, total | event total | report only (Mgal/mo) | all year | 001 |
| BOD, 5-day, 20 deg. C | average | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | average | report only (MGD) | all year | 002 |
Cited limits by parameter: Kansas's rules and the federal ones.
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