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MDNR, Division of State Parks

Sewerage Systems, Williamsville, Missouri. NPDES permit MO0120057, in force until Jul 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form OM monthly (3 values), outfall 002 form OM monthly (3 values), outfall 003 form LW monthly (8 values), outfall 004 form LW monthly (8 values)
Renewal application due
Feb 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 48 reports late

Limits in force (22)

ParameterStatisticLimitMonthsOutfall
Rainfalltotalreport only (in)all year001
Rainfallmonthly totalreport only (in)all year001
Freeboardtotalreport only (ft)all year001
Rainfalltotalreport only (in)all year002
Rainfallmonthly totalreport only (in)all year002
Freeboardtotalreport only (ft)all year002
Application rate area sprayedtotalreport only (acr)all year003
Application rate area sprayedmonthly totalreport only (acr)all year003
Application rate, gallons spray irrigationtotalreport only (gal)all year003
Application rate, gallons spray irrigationmonthly totalreport only (gal)all year003
Spray irrigationtotalreport only (hr/d)all year003
Spray irrigationmonthly totalreport only (hr/d)all year003
Spray irrigation, application ratetotalreport only (in/d)all year003
Spray irrigation, application ratemonthly totalreport only (in/d)all year003
Application rate area sprayedtotalreport only (acr)all year004
Application rate area sprayedmonthly totalreport only (acr)all year004
Application rate, gallons spray irrigationtotalreport only (gal)all year004
Application rate, gallons spray irrigationmonthly totalreport only (gal)all year004
Spray irrigationtotalreport only (hr/d)all year004
Spray irrigationmonthly totalreport only (hr/d)all year004
Spray irrigation, application ratetotalreport only (in/d)all year004
Spray irrigation, application ratemonthly totalreport only (in/d)all year004

Cited limits by parameter: Missouri'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/MO0120057 · MCP: https://passage-data.com/mcp