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

Ketchikan, City of

Sewage treatment plant, major discharger, Ketchikan, Alaska. NPDES permit AK0021440, in force until Oct 31, 2030. Last 12 months: over a limit 9 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form Q quarterly (24 values), form S 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

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

Period endingParameterReportedLimitOver by
November 2025Copper, total [as Cu], monthly average58 ug/L≤ 39 ug/L49%
December 2025Copper, total [as Cu], daily maximum2.49 lb/d≤ 2.07 lb/d20%
December 2025Copper, total [as Cu], daily maximum67 ug/L≤ 62 ug/L8%
December 2025Copper, total [as Cu], monthly average1.87 lb/d≤ 1.29 lb/d45%
December 2025Copper, total [as Cu], monthly average60 ug/L≤ 39 ug/L54%
January 2026Copper, total [as Cu], monthly average45.77 ug/L≤ 39 ug/L17%
February 2026Copper, total [as Cu], monthly average42.7 ug/L≤ 39 ug/L9%
March 2026Copper, total [as Cu], monthly average39.8 ug/L≤ 39 ug/L2%
April 2026Copper, total [as Cu], monthly average42.6 ug/L≤ 39 ug/L9%

Limits in force (29)

ParameterStatisticLimitMonths
Arsenic, total recoverablemonthly averagereport only (ug/L)all year
Arsenic, total recoverabledaily maximumreport only (ug/L)all year
Arsenic, total recoverablemonthly averagereport only (lb/d)all year
Arsenic, total recoverabledaily maximumreport only (lb/d)all year
Lead, total [as Pb]monthly averagereport only (ug/L)all year
Lead, total [as Pb]daily maximumreport only (ug/L)all year
Lead, total [as Pb]monthly averagereport only (lb/d)all year
Lead, total [as Pb]daily maximumreport only (lb/d)all year
Nickel, total [as Ni]monthly averagereport only (ug/L)all year
Nickel, total [as Ni]daily maximumreport only (ug/L)all year
Nickel, total [as Ni]monthly averagereport only (lb/d)all year
Nickel, total [as Ni]daily maximumreport only (lb/d)all year
Silver, total [as Ag]monthly averagereport only (ug/L)all year
Silver, total [as Ag]daily maximumreport only (ug/L)all year
Silver, total [as Ag]monthly averagereport only (lb/d)all year
Silver, total [as Ag]daily maximumreport only (lb/d)all year
Selenium, total [as Se]monthly averagereport only (ug/L)all year
Selenium, total [as Se]daily maximumreport only (ug/L)all year
Selenium, total [as Se]monthly averagereport only (lb/d)all year
Selenium, total [as Se]daily maximumreport only (lb/d)all year
PER-AND POLYFLUOROALKYL SUBSTANCESmonthly averagereport only (ng/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ng/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESmonthly averagereport only (ng/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ng/L)all year
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (mg/kg)all year
Mercury, total [as Hg]monthly averagereport only (ug/L)all year
Mercury, total [as Hg]daily maximumreport only (ug/L)all year
Mercury, total [as Hg]monthly averagereport only (lb/d)all year
Mercury, total [as Hg]daily maximumreport only (lb/d)all year

Cited limits by parameter: Alaska'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/AK0021440 · MCP: https://passage-data.com/mcp