USBOR-YELLOWTAIL DAM WASTEWATER TREATMENT FACILITY

NPDES permit MT0022993 · Minor FEDERAL · effective, expires 2028-02-29 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 24 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (17)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. C7 DA AVG <= 45 mg/L all year
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001E. coli30DA GM <= 126 #/100mL all year
001E. coliDAILY MX <= 410 #/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Flow, total30DA AVG report only all year
001Flow, totalDAILY MX report only all year
001Oil and grease visualINST MAX < 1 N=0;Y=1 all year
001IBOD, 5-day, 20 deg. C30DA AVG report only all year
001IBOD, 5-day, 20 deg. C7 DA AVG report only all year
001ISolids, total suspended30DA AVG report only all year
001ISolids, total suspended7 DA AVG 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