SAN ANTONIO RIVER AUTHORITY

NPDES permit TX0133094 · Minor POTW · effective, expires 2030-10-16 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (29.267777, -98.695555); you set the radius.

These are the last limits EPA's file holds for this permit, from an earlier version of it (version 3 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.

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

Last period with anything received: 2025-10-31.

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).

• Outfall 001, form A (DOMESTIC FACILITY - 001): every 1 month(s), 16 values

How strict are these limits?

Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.

• Solids, total suspended, daily average 15 mg/L — stricter than 35% of 936 other minor POTWs in Texas; 58% have the same limit
• Solids, total suspended, single grab sample 60 mg/L — stricter than 29% of 534 other minor POTWs in Texas; 65% have the same limit
• BOD, carbonaceous [5 day, 20 C], single grab sample 35 mg/L — stricter than 13% of 352 other minor POTWs in Texas; 73% have the same limit
• Oxygen, dissolved [DO], monthly minimum at least 3 mg/L — stricter than 12% of 903 other minor POTWs in Texas; 3% have the same limit
• BOD, carbonaceous [5 day, 20 C], daily average 10 mg/L — stricter than 8% of 574 other minor POTWs in Texas; 72% have the same limit
• Nitrogen, ammonia total [as N], daily average 3 mg/L — stricter than 7% of 572 other minor POTWs in Texas; 60% have the same limit
• E. coli, daily average 126 CFU/100mL — stricter than 0% of 774 other minor POTWs in Texas; 80% have the same limit
• E. coli, single grab sample 399 CFU/100mL — stricter than 0% of 574 other minor POTWs in Texas; 84% have the same limit
• pH, maximum 9 SU — stricter than 0% of 946 other minor POTWs in Texas; 99% have the same limit
• Nitrogen, ammonia total [as N], single grab sample 15 mg/L — stricter than 0% of 349 other minor POTWs in Texas; 99% have the same limit
• pH, minimum at least 6 SU — stricter than 0% of 946 other minor POTWs in Texas; 100% have the same limit

Limits in force (16)

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