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Spokane RVII

Sewerage Systems, Spokane, Missouri. NPDES permit MO0139661, in force until Oct 31, 2027. Last 12 months: over a limit 9 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (18 values), outfall INF form IQ quarterly (2 values)
Renewal application due
May 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
5 values over a limit, 2 required values missing, 1 of 16 reports late

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

Period endingParameterReportedLimitOver by
November 2025Phosphorus, total [as P], monthly average.9≤ .5 mg/L80%
December 2025Nitrogen, ammonia total [as N], daily maximum7.7≤ 5.6 mg/L38%
December 2025Nitrogen, ammonia total [as N], monthly average7.7≤ 2.1 mg/L267%
December 2025Phosphorus, total [as P], monthly average.7≤ .5 mg/L40%
January 2026Nitrogen, ammonia total [as N], daily maximum10.1≤ 5.6 mg/L80%
January 2026Nitrogen, ammonia total [as N], monthly average10.1≤ 2.1 mg/L381%
February 2026Nitrogen, ammonia total [as N], daily maximum22.1≤ 5.6 mg/L295%
February 2026Nitrogen, ammonia total [as N], monthly average22.1≤ 2.1 mg/L952%
August 2026Phosphorus, total [as P], monthly average.57≤ .5 mg/L14%

Limits in force (22)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 15 mg/Lall year001
Solids, total suspendedmonthly average≤ 10 mg/Lall year001
Oil and grease [soxhlet extr.] tot.daily maximum≤ 15 mg/Lall year001
Oil and grease [soxhlet extr.] tot.monthly average≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 1.7 mg/LApr–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 5.6 mg/LJan, Feb, Mar, Oct, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .6 mg/LApr–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LJan, Feb, Mar, Oct, Nov, Dec001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ .5 mg/Lall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
E. coliweekly average≤ 126 #/100mLall year001
E. colimonthly averagereport only (#/100mL)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF

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/MO0139661 · MCP: https://passage-data.com/mcp