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Sewage treatment plant, Andover, Kansas. NPDES permit KS0092720, in force until Apr 30, 2029. Last 12 months: over a limit 12 times (last August 2026), 3 of 35 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Phosphorus, Total As P, EPA's "DPD AVG" | 21.29476 lb/d | ≤ 15.04 lb/d | 42% |
| November 2025 | Phosphorus, Total As P, EPA's "DPD AVG" | 20.60951 lb/d | ≤ 15.04 lb/d | 37% |
| December 2025 | Phosphorus, Total As P, EPA's "DPD AVG" | 19.63944 lb/d | ≤ 15.04 lb/d | 31% |
| January 2026 | Phosphorus, Total As P, EPA's "DPD AVG" | 19.38719 lb/d | ≤ 15.04 lb/d | 29% |
| January 2026 | Solids, total suspended, maximum weekly average | 50 mg/L | ≤ 45 mg/L | 11% |
| February 2026 | Phosphorus, Total As P, EPA's "DPD AVG" | 19.18801 lb/d | ≤ 15.04 lb/d | 28% |
| March 2026 | Phosphorus, Total As P, EPA's "DPD AVG" | 19.45088 lb/d | ≤ 15.04 lb/d | 29% |
| April 2026 | Phosphorus, Total As P, EPA's "DPD AVG" | 19.98418 lb/d | ≤ 15.04 lb/d | 33% |
| May 2026 | Phosphorus, Total As P, EPA's "DPD AVG" | 18.75131 lb/d | ≤ 15.04 lb/d | 25% |
| June 2026 | Phosphorus, Total As P, EPA's "DPD AVG" | 18.90966 lb/d | ≤ 15.04 lb/d | 26% |
| July 2026 | Phosphorus, Total As P, EPA's "DPD AVG" | 17.52642 lb/d | ≤ 15.04 lb/d | 17% |
| August 2026 | Phosphorus, Total As P, EPA's "DPD AVG" | 16.45906 lb/d | ≤ 15.04 lb/d | 9% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Conductivity | monthly average | report only (umho/cm) | all year | 001 |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 6 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 25 mg/L | Apr | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Dec | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Aug | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 25 mg/L | May | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Jun | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 25 mg/L | Sep | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Feb | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Jan | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 20 mg/L | Jul | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Mar | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Oct | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | Nov | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 40 mg/L | Apr | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | Dec | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Aug | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 40 mg/L | May | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Jun | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 40 mg/L | Sep | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | Feb | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | Jan | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 30 mg/L | Jul | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | Mar | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | Oct | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 45 mg/L | Nov | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | monthly average | report only (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 | ≤ 1.1 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.1 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .9 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .8 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .9 mg/L | Jun | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.4 mg/L | Sep | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.2 mg/L | Feb | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.2 mg/L | Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.2 mg/L | Jan | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.2 mg/L | Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5.7 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.4 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.2 mg/L | Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.1 mg/L | Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.7 mg/L | Jul | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.2 mg/L | Mar | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.1 mg/L | Jun | 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 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 001 |
| Arsenic, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Thallium, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Beryllium, total recoverable [as Be] | monthly average | report only (ug/L) | all year | 001 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Silver total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Chromium, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Copper, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Antimony, total recoverable | monthly average | report only (ug/L) | all year | 001 |
| Priority Pollutants | monthly average | report only (ug/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| E. coli | monthly geometric mean | ≤ 262 #/100mL | Apr | 001 |
| E. coli | monthly geometric mean | ≤ 262 #/100mL | Jul | 001 |
| E. coli | monthly geometric mean | ≤ 262 #/100mL | Jun | 001 |
| E. coli | monthly geometric mean | ≤ 2358 #/100mL | Jan | 001 |
| E. coli | monthly geometric mean | ≤ 262 #/100mL | Oct | 001 |
| E. coli | monthly geometric mean | ≤ 262 #/100mL | May | 001 |
| E. coli | monthly geometric mean | ≤ 262 #/100mL | Aug | 001 |
| E. coli | monthly geometric mean | ≤ 2358 #/100mL | Feb | 001 |
| E. coli | monthly geometric mean | ≤ 2358 #/100mL | Dec | 001 |
| E. coli | monthly geometric mean | ≤ 262 #/100mL | Sep | 001 |
| E. coli | monthly geometric mean | ≤ 2358 #/100mL | Nov | 001 |
| E. coli | monthly geometric mean | ≤ 2358 #/100mL | Mar | 001 |
| E. coli | weekly geometric mean | ≤ 4348 #/100mL | Apr | 001 |
| E. coli | weekly geometric mean | ≤ 4348 #/100mL | Jul | 001 |
| E. coli | weekly geometric mean | ≤ 4348 #/100mL | Jun | 001 |
| E. coli | weekly geometric mean | report only (#/100mL) | Jan | 001 |
| E. coli | weekly geometric mean | ≤ 4348 #/100mL | Oct | 001 |
| E. coli | weekly geometric mean | ≤ 4348 #/100mL | May | 001 |
| E. coli | weekly geometric mean | ≤ 4348 #/100mL | Aug | 001 |
| E. coli | weekly geometric mean | report only (#/100mL) | Feb | 001 |
| E. coli | weekly geometric mean | report only (#/100mL) | Dec | 001 |
| E. coli | weekly geometric mean | ≤ 4348 #/100mL | Sep | 001 |
| E. coli | weekly geometric mean | report only (#/100mL) | Nov | 001 |
| E. coli | weekly geometric mean | report only (#/100mL) | Mar | 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" | ≤ 15.04 lb/d | all year | 001 |
| Nitrite + Nitrate total [as N] | daily average | report only (mg/L) | all year | 001 |
| Mercury, total [as Hg] | monthly average | report only (ug/L) | all year | 001 |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily minimum | ≥ 70 % | all year | 001 |
| IC25 Static Renewal 7 Day Chronic Pimephales | daily minimum | ≥ 70 % | all year | 001 |
| E. coli | monthly geometric mean | ≤ 262 #/100mL | all year | 002 |
| Flow, irrigation | monthly average | report only (MGD) | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Parameter | New limit | From | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C, monthly average | 20 mg/L (Sep) | Apr 1, 2028 | tighter | — | — |
| BOD, 5-day, 20 deg. C, monthly average | 25 mg/L (Mar) | Apr 1, 2028 | tighter | — | — |
| BOD, 5-day, 20 deg. C, monthly average | 20 mg/L (Oct) | Apr 1, 2028 | tighter | — | — |
| BOD, 5-day, 20 deg. C, maximum weekly average | 30 mg/L (Sep) | Apr 1, 2028 | tighter | — | — |
| BOD, 5-day, 20 deg. C, maximum weekly average | 40 mg/L (Mar) | Apr 1, 2028 | tighter | — | — |
| BOD, 5-day, 20 deg. C, maximum weekly average | 30 mg/L (Oct) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 4.2 mg/L (Sep) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 7.1 mg/L (Oct) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 9.1 mg/L (Nov) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 9.1 mg/L (Dec) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 9.1 mg/L (Jan) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 3 mg/L (Aug) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 5.6 mg/L (Apr) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 9.1 mg/L (Feb) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 0.7 mg/L (Jul) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 1.7 mg/L (Oct) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 2.1 mg/L (Nov) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 2.1 mg/L (Dec) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 2.1 mg/L (Jan) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 0.8 mg/L (Jun) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 0.8 mg/L (Aug) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 1.4 mg/L (Apr) | Apr 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], monthly average | 2.1 mg/L (Feb) | Apr 1, 2028 | tighter | — | — |
| Nitrite + Nitrate total [as N], daily average | 10 mg/L | Apr 1, 2029 | new | 8.706 mg/L (11 values) | 0.871× |
Cited limits by parameter: Kansas's rules and the federal ones.
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