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City of Gerald

Sewage treatment plant, Gerald, Missouri. NPDES permit MO0045420 expired Dec 31, 2020; its limits still apply. Last 12 months: over a limit 2 times (last January 2026), 2 required values missing, 1 of 20 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (12 values), form D quarterly (34 values), form R quarterly (2 values), form W yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 21 reports late

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

Period endingParameterReportedLimitOver by
January 2026Nitrogen, ammonia total [as N], daily maximum13.2≤ 11.4 mg/L16%
January 2026Nitrogen, ammonia total [as N], monthly average4.27≤ 2.3 mg/L86%

Limits in force (52)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cweekly average≤ 24 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 16.5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedweekly average≤ 33 mg/Lall year
Solids, total suspendedmonthly average≤ 22 mg/Lall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Oil and grease [soxhlet extr.] tot.daily maximum≤ 15 mg/Lall year
Oil and grease [soxhlet extr.] tot.monthly average≤ 10 mg/Lall year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximum≤ 11.4 mg/LJan, Feb, Mar, Oct, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 4.9 mg/LApr–Sep
Nitrogen, ammonia total [as N]monthly average≤ 2.3 mg/LJan, Feb, Mar, Oct, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LApr–Sep
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year
Arsenic, total recoverabledaily maximumreport only (ug/L)all year
Arsenic, total recoverablemonthly averagereport only (ug/L)all year
Iron, total recoverabledaily maximum≤ 1840 ug/Lall year
Iron, total recoverablemonthly average≤ 710 ug/Lall year
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all year
Beryllium, total recoverable [as Be]monthly averagereport only (ug/L)all year
Nickel, total recoverabledaily maximum≤ 212 ug/Lall year
Nickel, total recoverablemonthly average≤ 76.9 ug/Lall year
Silver total recoverabledaily maximumreport only (ug/L)all year
Silver total recoverablemonthly averagereport only (ug/L)all year
Zinc, total [as Zn]daily maximumreport only (ug/L)all year
Zinc, total [as Zn]monthly averagereport only (ug/L)all year
Aluminum, total recoverabledaily maximum≤ 750 ug/Lall year
Aluminum, total recoverablemonthly average≤ 260 ug/Lall year
Cadmium, total recoverabledaily maximum≤ .5 ug/Lall year
Cadmium, total recoverablemonthly average≤ .5 ug/Lall year
Lead, total recoverabledaily maximum≤ 16.2 ug/Lall year
Lead, total recoverablemonthly average≤ 8.8 ug/Lall year
Copper, total recoverabledaily maximum≤ 31.7 ug/Lall year
Copper, total recoverablemonthly average≤ 17.6 ug/Lall year
Chromium, trivalent total recoverabledaily maximumreport only (ug/L)all year
Chromium, trivalent total recoverablemonthly averagereport only (ug/L)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
E. coli7-day geometric mean≤ 1030 #/100mLApr–Oct
E. coli30-day geometric mean≤ 206 #/100mLApr–Oct
Toxicity [acute], Ceriodaphnia dubiadaily maximumreport only (toxic)all year
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximumreport only (toxic)all year
Mercury, total recoverabledaily maximumreport only (ug/L)all year
Mercury, total recoverablemonthly averagereport only (ug/L)all year
Chromium, hexavalent tot recoverabledaily maximumreport only (ug/L)all year
Chromium, hexavalent tot recoverablemonthly averagereport only (ug/L)all year

How strict are these limits?

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/MO0045420 · MCP: https://passage-data.com/mcp