Energy Northwest

NPDES permit WA0025151 · Minor NON-POTW · effective, expires 2028-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
1required values missing, on 1 form(s)
0of 44 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among WA permits in EPA's filings — check your permit).

Limits in force (24)

OutfallParameterStatisticLimitMonths
CWBTemperature, water deg. centigradeDAILY MN report only (alert) all year
CWBTemperature, water deg. centigradeDAILY MX report only (alert) all year
CWBBOD, 5-day, 20 deg. CSingle Rdg report only (alert) all year
CWBSolids, total suspendedSingle Rdg report only (alert) all year
CWBNitrogen, ammonia total [as N]Single Rdg report only (alert) all year
CWBCarbon, tot organic [TOC]Single Rdg report only (alert) all year
CWBChromium, total [as Cr]DAILY MX <= 16.4 ug/L all year
CWBChromium, total [as Cr]MO AVG <= 8.2 ug/L all year
CWBZinc, total [as Zn]DAILY MX <= 107 ug/L all year
CWBZinc, total [as Zn]MO AVG <= 53 ug/L all year
CWBHalogen, total residualSingle Rdg report only (alert) all year
CWBHalogen, total residualDAILY MX <= .1 mg/L all year
CWBpH, maximumSingle Rdg report only (alert) all year
CWBpH, minimumSingle Rdg report only (alert) all year
CWBFlowDAILY MX <= 9.4 MGD all year
CWBFlowMO AVG <= 5.6 MGD all year
CWBChemical oxygen demand [COD]Single Rdg report only (alert) all year
CWBDaily excursion time [min]MO TOTAL report only (alert) all year
INTKFlowMO AVG report only (alert) all year
INTKFlowMO TOTAL report only (alert) all year
RWTSFlow, totalMO AVG report only (alert) all year
RWTSFlow, totalMO TOTAL report only (alert) all year
SSWDFlowMO AVG report only (alert) all year
SSWDFlowMO TOTAL report only (alert) all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states