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Sewage treatment plant, major discharger, Wichita, Kansas. NPDES permit KS0100790, in force until Dec 31, 2026. Last 12 months: over a limit 9 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Sulfate, daily average | 251.25 mg/L | ≤ 250 mg/L | 1% |
| December 2025 | Sulfate, daily average | 253.91667 mg/L | ≤ 250 mg/L | 2% |
| January 2026 | Sulfate, daily average | 256.41667 mg/L | ≤ 250 mg/L | 3% |
| February 2026 | Sulfate, daily average | 254.33333 mg/L | ≤ 250 mg/L | 2% |
| March 2026 | Sulfate, daily average | 260.5 mg/L | ≤ 250 mg/L | 4% |
| April 2026 | Sulfate, daily average | 263.5 mg/L | ≤ 250 mg/L | 5% |
| May 2026 | Sulfate, daily average | 263.5 mg/L | ≤ 250 mg/L | 5% |
| June 2026 | Sulfate, daily average | 252.41667 mg/L | ≤ 250 mg/L | 1% |
| July 2026 | Sulfate, daily average | 251.58333 mg/L | ≤ 250 mg/L | 1% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Conductivity | monthly average | report only (umho/cm) | all year |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 25 mg/L | Dec |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Jul |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | May |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 25 mg/L | Feb |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Nov |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Mar |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Oct |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Aug |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Sep |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 25 mg/L | Jan |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Jun |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Apr |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 40 mg/L | Dec |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Jul |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | May |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 40 mg/L | Feb |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Nov |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Mar |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Oct |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Aug |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Sep |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 40 mg/L | Jan |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Jun |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Apr |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | monthly average | report only (SU) | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.9 mg/L | May |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.4 mg/L | Feb |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.4 mg/L | Jan |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.4 mg/L | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.4 mg/L | Mar |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | Sep |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.5 mg/L | Aug |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.3 mg/L | Jul |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.2 mg/L | Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.2 mg/L | Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.4 mg/L | Jun |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 13.4 mg/L | May |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 31.1 mg/L | Feb |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 31.1 mg/L | Jan |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.8 mg/L | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 27.3 mg/L | Mar |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 25.5 mg/L | Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 25.5 mg/L | Sep |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Aug |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.3 mg/L | Jul |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28.7 mg/L | Nov |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 28.7 mg/L | Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.4 mg/L | Jun |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year |
| Sulfate, total [as SO4] | monthly average | report only (lb/d) | all year |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year |
| Arsenic, total recoverable | monthly average | report only (ug/L) | all year |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year |
| Thallium, total recoverable | monthly average | report only (ug/L) | all year |
| Beryllium, total recoverable [as Be] | monthly average | report only (ug/L) | all year |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year |
| Silver total recoverable | monthly average | report only (ug/L) | all year |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year |
| Lead, total recoverable | monthly average | report only (ug/L) | all year |
| Chromium, total recoverable | monthly average | report only (ug/L) | all year |
| Copper, total recoverable | monthly average | report only (ug/L) | all year |
| Antimony, total recoverable | monthly average | report only (ug/L) | all year |
| Priority Pollutants | monthly average | report only (mg/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| E. coli | monthly geometric mean | ≤ 2358 #/100mL | Jan, Feb, Mar, Nov, Dec |
| E. coli | monthly geometric mean | ≤ 262 #/100mL | Apr–Oct |
| E. coli | weekly geometric mean | report only (#/100mL) | Jan, Feb, Mar, Nov, Dec |
| E. coli | weekly geometric mean | ≤ 4348 #/100mL | Apr–Oct |
| Nitrogen, Total As N | daily average | report only (mg/L) | all year |
| Nitrogen, Total As N | EPA's "DPD AVG" | report only (lb/d) | all year |
| Phosphorus, Total As P | daily average | report only (mg/L) | all year |
| Phosphorus, Total As P | EPA's "DPD AVG" | ≤ 37.6 lb/d | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Mercury, total [as Hg] | monthly average | report only (ug/L) | all year |
| Sulfate | daily average | ≤ 250 mg/L | all year |
| Sulfate | EPA's "DPD AVG" | report only (lb/d) | all year |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily minimum | ≥ 90 % | all year |
| IC25 Static Renewal 7 Day Chronic Pimephales | daily minimum | ≥ 90 % | all year |
Cited limits by parameter: Kansas's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/KS0100790 · MCP: https://passage-data.com/mcp