NORTH ALAMO WATER SUPPLY CORPORATION

NPDES permit TX0128643 · Minor NON-POTW · administratively continued, expires 2026-01-07 · 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.

This permit expired on 2026-01-07 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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 (read off this permit's own late-day counts in EPA's filings).

Limits in force (12)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Sulfate, total [as SO4]DAILY AV report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Selenium, total [as Se]DAILY AV <= .0084 mg/L all year
001Selenium, total [as Se]DAILY MX <= .0177 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV <= 2 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 2 MGD all year
001Solids, total dissolvedDAILY AV report only all year
001Solids, total dissolvedDAILY MX <= 12720 mg/L all year
001Solids, total dissolvedDAILY AV report only all year
001Solids, total dissolvedDAILY MX 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