Passage Data · Check a report · Use it from your AI

Huntsville, City of

Sewage treatment plant, Huntsville, Missouri. NPDES permit MO0040827 expired Dec 31, 2025; its limits still apply. Last 12 months: over a limit 6 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form Q quarterly (18 values), outfall INF form IQ quarterly (2 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
12 values over a limit, 0 required values missing, 0 of 8 reports late

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

Period endingParameterReportedLimitOver by
December 2025E. coli, 30-day geometric mean2750≤ 206 #/100mL1235%
December 2025E. coli, 7-day geometric mean2750≤ 1030 #/100mL167%
December 2025Nitrogen, ammonia total [as N], daily maximum22.9≤ 12.1 mg/L89%
December 2025Nitrogen, ammonia total [as N], monthly average20≤ 3.1 mg/L545%
December 2025Oil and grease [soxhlet extr.] tot., daily maximum22.2≤ 15 mg/L48%
June 2026Nitrogen, ammonia total [as N], monthly average5.43≤ 1.8 mg/L202%

Limits in force (26)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year001
Oxygen, dissolved [DO]monthly average minimumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cweekly average≤ 65 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 45 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 120 mg/Lall year001
Solids, total suspendedmonthly average≤ 80 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≤ 12.1 mg/LOct–Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LJan–Mar001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJul–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LApr–Jun001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LOct–Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LJan–Mar001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LJul–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LApr–Jun001
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. coli7-day geometric mean≤ 1030 #/100mLApr–Dec001
E. coli30-day geometric mean≤ 206 #/100mLApr–Dec001
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year001
Solids, suspended percent removalmonthly average minimum≥ 65 %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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MO0040827 · MCP: https://passage-data.com/mcp