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Metlakatla Indian Community

Sewage treatment plant, Metlakatla Indian Community, Alaska. NPDES permit AK0053813 expired Sep 30, 2025; its limits still apply. Last 12 months: over a limit 4 times (last August 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (22 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
43 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
January 2026BOD, 5-day, percent removal, monthly average minimum63 %≥ 85 %147%
February 2026BOD, 5-day, percent removal, monthly average minimum83 %≥ 85 %13%
May 2026BOD, 5-day, percent removal, monthly average minimum72 %≥ 85 %87%
August 2026BOD, 5-day, percent removal, monthly average minimum69 %≥ 85 %107%

Limits in force (22)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 2 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 57.55 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 86.32 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 70 mg/Lall year
Solids, total suspendedweekly average≤ 105 mg/Lall year
Solids, total suspendedmonthly average≤ 134.27 lb/dall year
Solids, total suspendedweekly average≤ 201.41 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Fecal coliform, MPN, EC med, 44.5 Cmonthly geometric mean≤ 100000 #/100mLall year
Fecal coliform, MPN, EC med, 44.5 Cdaily geometric mean≤ 150000 #/100mLall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)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
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimumreport only (%)all year

How strict are these limits?

Cited limits by parameter: Alaska'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/AK0053813 · MCP: https://passage-data.com/mcp