GALVESTON COUNTY MUNICIPAL DISTRICT NO. 12

NPDES permit TX0020311 · Minor POTW · effective, expires 2028-10-26 · 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 11 forms filed late

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

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 (15)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 4 mg/L all year
001BOD, 5-day, 20 deg. CDAILY AV <= 20 mg/L all year
001BOD, 5-day, 20 deg. CSINGGRAB <= 65 mg/L all year
001BOD, 5-day, 20 deg. CDAILY AV <= 67 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 20 mg/L all year
001Solids, total suspendedSINGGRAB <= 65 mg/L all year
001Solids, total suspendedDAILY AV <= 67 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= .4 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO MIN >= 1 mg/L all year
001Chlorine, total residualMO MAX <= 4 mg/L all year
001EnterococciDAILY AV <= 35 MPN/100mL all year
001EnterococciSINGGRAB <= 104 MPN/100mL 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