MDNR, Division of State Parks — NPDES permit MO0109941: limits, due date and EPA's record

Sewerage Systems, Bennett Springs, Missouri. NPDES permit MO0109941 expired Sep 30, 2023; its limits still apply. Last 12 months: no values over a limit, 5 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Limits in force (22)

Parameter	Statistic	Limit	Months	Outfall
BOD, 5-day, 20 deg. C	weekly average	≤ 45 mg/L	all year	001
BOD, 5-day, 20 deg. C	monthly average	≤ 30 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	≤ 45 mg/L	all year	001
Solids, total suspended	monthly average	≤ 30 mg/L	all year	001
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	001
Nitrogen, ammonia total [as N]	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	7-day geometric mean	≤ 630 #/100mL	Apr–Dec	001
E. coli	30-day geometric mean	≤ 126 #/100mL	Apr–Dec	001
BOD, 5-day, percent removal	monthly average minimum	≥ 65 %	all year	001
Solids, suspended percent removal	monthly average minimum	≥ 65 %	all year	001
Application rate area sprayed	total	report only (acr)	all year	002
Application rate area sprayed	monthly total	report only (acr)	all year	002
Application rate, gallons spray irrigation	total	report only (gal)	all year	002
Application rate, gallons spray irrigation	monthly total	report only (gal)	all year	002
Spray irrigation	total	report only (hr/d)	all year	002
Spray irrigation	monthly total	report only (hr/d)	all year	002
Spray irrigation, application rate	total	report only (in/d)	all year	002
Spray irrigation, application rate	monthly total	report only (in/d)	all year	002

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/MO0109941 · MCP: https://passage-data.com/mcp