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Brad Koch - City of Valdez

Sewage treatment plant, major discharger, Valdez, Alaska. NPDES permit AK0021431, in force until Mar 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form AM monthly (39 values), form AQ quarterly (5 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (44)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen, dissolved [DO]daily minimum≥ 2 mg/Lall year
Oxygen, dissolved [DO]daily maximum≤ 17 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 60 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 375 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 751 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 563 lb/dall year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 60 mg/Lall year
Solids, total suspendedmonthly average≤ 375 lb/dall year
Solids, total suspendeddaily maximum≤ 751 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 563 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 21 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 39 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 263 lb/dall year
Nitrogen, ammonia total [as N]daily maximum≤ 488 lb/dall year
Nitrogen, ammonia total [as N]weekly average≤ 32 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 400 lb/dall year
Cyanide, weak acid, dissociabledaily maximumreport only (ug/L)all year
Copper, total recoverablemonthly average≤ 9 ug/Lall year
Copper, total recoverabledaily maximum≤ 12 ug/Lall year
Copper, total recoverablemonthly average≤ .11 lb/dall year
Copper, total recoverabledaily maximum≤ .15 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximum≤ 2.5 MGDall year
Chlorine, total residualmonthly average≤ 30 ug/Lall year
Chlorine, total residualdaily maximum≤ 46 ug/Lall year
Chlorine, total residualmonthly average≤ .4 lb/dall year
Chlorine, total residualdaily maximum≤ .57 lb/dall year
Chlorine, total residualweekly average≤ 45 ug/Lall year
Chlorine, total residualweekly average≤ .56 lb/dall year
Enterococcidaily maximumreport only (#/100mL)May–Sep
Coliform, fecal generalmaximum monthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 800 #/100mLall year
Coliform, fecal generalweekly average≤ 400 #/100mLall year
BOD, 5-day, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year

How strict are these limits?

Cited limits by parameter: Alaska'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/AK0021431 · MCP: https://passage-data.com/mcp