TROUTDALE, CITY OF

NPDES permit OR0020524 · Major POTW · effective, expires 2028-07-31 · 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

2values over a limit
0required values missing, on 0 form(s)
2of 37 forms filed late

Last period with anything received: 2026-08-31. Most often over: pH range excursions, > 60 minutes (1), Solids, total suspended (1).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (47)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeMX 7D AV report only all year
001pHMO MIN report only all year
001pHDAILY MN >= 6 SU all year
001pHMO MAX report only all year
001pHDAILY MX <= 9 SU all year
001pHMO MIN report only all year
001pHDAILY MN >= 6 SU (alert) all year
001pHMO MAX report only all year
001pHDAILY MX <= 9 SU (alert) all year
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedMO AVG <= 10 mg/L Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 1000 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedMO AVG <= 250 lb/d Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX <= 2000 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedDAILY MX <= 500 lb/d Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG <= 45 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedWKLY AVG <= 15 mg/L Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedWKLY AVG <= 1500 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedWKLY AVG <= 370 lb/d Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO MAX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001E. coliMO GEO <= 126 #/100mL all year
001E. coliDAILY MX <= 406 #/100mL all year
001E. coliMO GEO <= 126 #/100mL all year
001E. coliDAILY MX report only all year
001Excess thermal loadMX 7D AV <= 58.3 mkcal/day May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 850 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 250 lb/d Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 1700 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 500 lb/d Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 40 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 15 mg/L Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 1300 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 370 lb/d Jun, Jul, Aug, Sep, Oct
001BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001pH range excursions, > 60 minutesTOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumTOTAL <= 446 min 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