Public Water Supply District No. 1 of — NPDES permit MO0121886: limits, due date and EPA's record

Sewage treatment plant, Winfield, Missouri. NPDES permit MO0121886, in force until Jan 31, 2029. Last 12 months: no values over a limit, 8 of 28 reports late. Source: EPA ECHO, Oct 22, 2026.

Limits in force (48)

Parameter	Statistic	Limit	Months	Outfall
BOD, 5-day, 20 deg. C	weekly average	≤ 15 mg/L	all year	001
BOD, 5-day, 20 deg. C	monthly average	≤ 10 mg/L	all year	001
pH	minimum	≥ 6.5 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	weekly average	≤ 20 mg/L	all year	001
Solids, total suspended	monthly average	≤ 15 mg/L	all year	001
Oil and grease [soxhlet extr.] tot.	daily maximum	≤ 15 mg/L	all year	001
Oil and grease [soxhlet extr.] tot.	monthly average	≤ 10 mg/L	all year	001
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	001
Nitrogen, total [as N]	monthly average	report only (mg/L)	all year	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 8.4 mg/L	Sep	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 10.1 mg/L	Mar, Dec	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 12.1 mg/L	Jan, Feb	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 8.4 mg/L	Apr	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 8.4 mg/L	Oct	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 12.1 mg/L	May	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 8.4 mg/L	Nov	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 8.4 mg/L	Jul, Aug	001
Nitrogen, ammonia total [as N]	monthly average	≤ .9 mg/L	Sep	001
Nitrogen, ammonia total [as N]	monthly average	≤ 2.7 mg/L	Mar, Dec	001
Nitrogen, ammonia total [as N]	monthly average	≤ 3.1 mg/L	Jan, Feb	001
Nitrogen, ammonia total [as N]	monthly average	≤ 2.1 mg/L	Apr	001
Nitrogen, ammonia total [as N]	monthly average	≤ 1.8 mg/L	Oct	001
Nitrogen, ammonia total [as N]	monthly average	≤ 2.1 mg/L	May	001
Nitrogen, ammonia total [as N]	monthly average	≤ 2.7 mg/L	Nov	001
Nitrogen, ammonia total [as N]	monthly average	≤ .9 mg/L	Jul, Aug	001
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/L)	all year	001
Nitrogen, Kjeldahl, total [as N]	monthly average	report only (mg/L)	all year	001
Nitrite + Nitrate total [as N]	daily maximum	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]	daily maximum	report only (mg/L)	all year	001
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
E. coli	geometric mean	≤ 1030 #/100mL	Apr–Dec	001
E. coli	30-day geometric mean	≤ 206 #/100mL	Apr–Dec	001
BOD, 5-day, percent removal	monthly average minimum	≥ 85 %	all year	001
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	001
BOD, 5-day, 20 deg. C	monthly average	report only (mg/L)	all year	INF
Solids, total suspended	monthly average	report only (mg/L)	all year	INF
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	INF
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	INF
Nitrogen, Kjeldahl, total [as N]	daily maximum	report only (mg/L)	all year	INF
Nitrogen, Kjeldahl, total [as N]	monthly average	report only (mg/L)	all year	INF
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	INF
Nitrite + Nitrate total [as N]	monthly average	report only (mg/L)	all year	INF
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	INF
Phosphorus, total [as P]	monthly average	report only (mg/L)	all year	INF

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/MO0121886 · MCP: https://passage-data.com/mcp