COLORADO RIVER MUNICIPAL WATER DISTRICT

NPDES permit TX0131857 · Minor POTW · effective, expires 2028-06-29 · 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

2values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (2).

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

Limits in force (16)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 5 mg/L all year
001pHMINIMUM >= 5 SU all year
001pHMAXIMUM <= 11 SU all year
001Nitrogen, ammonia total [as N]DAILY AV <= 9 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Selenium, total [as Se]DAILY AV <= .00565 mg/L all year
001Selenium, total [as Se]DAILY MX <= .0119 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV <= .75 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .85 MGD all year
001Solids, total dissolvedDAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 30 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMO TOTAL <= 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