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Sedan, City of

Sewage treatment plant, Sedan, Kansas. NPDES permit KS0089746, in force until Sep 30, 2031. Last 12 months: over a limit 2 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 29 days after each period: form A quarterly (9 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 2 values over a limit, 0 required values missing, 1 of 4 reports late

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

Period ending	Parameter	Reported	Limit	Over by
December 2025	BOD, 5-day, 20 deg. C, monthly average	33.9 mg/L	≤ 30 mg/L	13%
March 2026	BOD, 5-day, 20 deg. C, monthly average	44.2 mg/L	≤ 30 mg/L	47%

Limits in force (9)

These limits come from an earlier version of this permit (version 3 in EPA's file); its current version holds none yet. A renewal can change them.

Parameter	Statistic	Limit	Months
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year
BOD, 5-day, 20 deg. C	maximum weekly average	≤ 45 mg/L	all year
BOD, 5-day, 20 deg. C	monthly average	report only (mg/L)	all year
pH	monthly average	report only (SU)	all year
Solids, total suspended	monthly average	≤ 80 mg/L	all year
Solids, total suspended	maximum weekly average	≤ 120 mg/L	all year
Solids, total suspended	monthly average	report only (mg/L)	all year
Nitrogen, ammonia total [as N]	monthly average	≤ 3.2 mg/L	all year
E. coli	monthly geometric mean	report only (#/100mL)	all year

How strict are these limits?

Nitrogen, ammonia total [as N], monthly average 3.2 mg/L — stricter than 62% of 309 other minor POTWs in Kansas; 1% have the same limit

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/KS0089746 · MCP: https://passage-data.com/mcp