Confederated Tribes of the Umatilla Indian Reservation

NPDES permit OR0044717 · Minor NON-POTW · effective, expires 2031-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

2values over a limit
0required values missing, on 0 form(s)
0of 38 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (2).

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 (31)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeMX 7D AV report only all year
001Temperature, water deg. centigradeMX 7D AV report only all year
001pHDAILY MN >= 6.2 SU all year
001pHDAILY MX <= 9 SU all year
001pHMO MAX report only all year
001Solids, total suspendedMO AVG <= 5 mg/L all year
001Solids, total suspendedDAILY MX <= 10 mg/L all year
001Solids, total suspendedDAILY MX report only all year
001Solids, settleableMO AVG <= .1 mL/L all year
001Nitrogen, ammonia total [as N]QB 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
001Excess thermal loadDAILY MX report only Jun, Jul, Aug, Sep
001Excess thermal loadMX 7D AV report only Jun, Jul, Aug, Sep
001Excess thermal loadMX 7D AV report only Jun, Jul, Aug, Sep
001Excess thermal loadMX 7D AV report only Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001FormaldehydeQB report only all year
002Temperature, water deg. centigradeDAILY MX report only all year
002Temperature, water deg. centigradeMX 7D AV report only all year
002pHDAILY MN >= 6.2 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspendedMO AVG <= 5 mg/L all year
002Solids, total suspendedDAILY MX <= 10 mg/L all year
002Solids, settleableMO AVG <= .1 mL/L all year
002Nitrogen, ammonia total [as N]QB report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Excess thermal loadDAILY MX report only Jun, Jul, Aug, Sep
002FormaldehydeQB report only 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