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David Dziak

Sewerage Systems, Rolla, Missouri. NPDES permit MO0112232 expired Jan 31, 2019; its limits still apply. No reports in EPA's file for the last 12 months. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly
Last report on file
None in EPA's file for the last 12 months; that may be EPA's gap, not the facility's

Limits in force (11)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cweekly average≤ 65 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 45 mg/Lall year
pHminimum≥ 6.5 SUall year
Solids, total suspendedweekly average≤ 120 mg/Lall year
Solids, total suspendedmonthly average≤ 80 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 3.6 mg/LApr–Sep
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LJan, Feb, Mar, Oct, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LApr–Sep
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LJan, Feb, Mar, Oct, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year

How strict are these limits?

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

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MO0112232 · MCP: https://passage-data.com/mcp