Passage Data · Check a report · Use it from your AI

ST. Marys, City of

Sewage treatment plant, St Marys, Kansas. NPDES permit KS0020974, in force until Dec 31, 2030. Last 12 months: over a limit 10 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: outfall 001 form A monthly (20 values), outfall 002 form A monthly (4 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
October 2025E. coli, monthly geometric mean4110 #/100mL≤ 427 #/100mL863%
October 2025Nitrogen, ammonia total [as N], daily maximum32.2 mg/L≤ 6.9 mg/L367%
October 2025Nitrogen, ammonia total [as N], monthly average32.2 mg/L≤ 2.4 mg/L1242%
November 2025Nitrogen, ammonia total [as N], monthly average4.1 mg/L≤ 3.9 mg/L5%
June 2026Nitrogen, ammonia total [as N], daily maximum12.9 mg/L≤ 3.5 mg/L269%
June 2026Nitrogen, ammonia total [as N], monthly average12.9 mg/L≤ 1.3 mg/L892%
August 2026Nitrogen, ammonia total [as N], daily maximum6.51 mg/L≤ 2.9 mg/L124%
August 2026Nitrogen, ammonia total [as N], monthly average6.51 mg/L≤ 1.1 mg/L492%
September 2026Nitrogen, ammonia total [as N], daily maximum14.8 mg/L≤ 3.9 mg/L279%
September 2026Nitrogen, ammonia total [as N], monthly average14.8 mg/L≤ 1.4 mg/L957%

Limits in force (57)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LFeb001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LJun001
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LSep001
Nitrogen, ammonia total [as N]monthly average≤ 1.1 mg/LAug001
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LMar001
Nitrogen, ammonia total [as N]monthly average≤ 1.9 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LDec001
Nitrogen, ammonia total [as N]monthly average≤ 2.2 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LNov001
Nitrogen, ammonia total [as N]monthly average≤ 2.6 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJul001
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LJan001
Nitrogen, ammonia total [as N]daily maximum≤ 9.9 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 2.9 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 9.9 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 5.2 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 9.9 mg/LDec001
Nitrogen, ammonia total [as N]daily maximum≤ 6.4 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 9.9 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 7.8 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 9.9 mg/LJan001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
E. colimonthly geometric mean≤ 427 #/100mLMay001
E. colimonthly geometric mean≤ 3843 #/100mLDec001
E. colimonthly geometric mean≤ 3843 #/100mLNov001
E. colimonthly geometric mean≤ 427 #/100mLAug001
E. colimonthly geometric mean≤ 3843 #/100mLFeb001
E. colimonthly geometric mean≤ 427 #/100mLJun001
E. colimonthly geometric mean≤ 3843 #/100mLJan001
E. colimonthly geometric mean≤ 427 #/100mLSep001
E. colimonthly geometric mean≤ 427 #/100mLOct001
E. colimonthly geometric mean≤ 3843 #/100mLMar001
E. colimonthly geometric mean≤ 427 #/100mLApr001
E. colimonthly geometric mean≤ 427 #/100mLJul001
Nitrogen, Total As Ndaily averagereport only (mg/L)all year001
Nitrogen, Total As NEPA's "DPD AVG"report only (lb/d)all year001
Phosphorus, Total As Pdaily averagereport only (mg/L)all year001
Phosphorus, Total As PEPA's "DPD AVG"report only (lb/d)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year002
Solids, total suspendedmonthly averagereport only (mg/L)all year002
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year002
Phosphorus, total [as P]monthly averagereport only (mg/L)all year002

New limits from Jul 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Phosphorus, Total As P, EPA's "DPD AVG"4.18 lb/dnew4.061 lb/d (12 values)0.971×

How strict are these limits?

Cited limits by parameter: Kansas's rules and the federal ones.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/KS0020974 · MCP: https://passage-data.com/mcp