NPDES permit TX0129411 · Minor NON-POTW · effective, expires 2030-01-16 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31.
Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | DAILY AV | <= 45 mg/L | all year |
| 001 | Arsenic, total [as As] | DAILY AV | <= .1 mg/L | all year |
| 001 | Arsenic, total [as As] | DAILY MX | <= .3 mg/L | all year |
| 001 | Barium, total [as Ba] | DAILY AV | <= 1 mg/L | all year |
| 001 | Barium, total [as Ba] | DAILY MX | <= 4 mg/L | all year |
| 001 | Cadmium, total [as Cd] | DAILY AV | <= .05 mg/L | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | <= .15 mg/L | all year |
| 001 | Chromium, total [as Cr] | DAILY AV | <= .5 mg/L | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 5 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY AV | <= .04 mg/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= .09 mg/L | all year |
| 001 | Lead, total [as Pb] | DAILY AV | <= .35 mg/L | all year |
| 001 | Lead, total [as Pb] | DAILY MX | <= .75 mg/L | all year |
| 001 | Manganese, total [as Mn] | DAILY AV | <= 1 mg/L | all year |
| 001 | Manganese, total [as Mn] | DAILY MX | <= 3 mg/L | all year |
| 001 | Nickel, total [as Ni] | DAILY AV | <= 1 mg/L | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= 3 mg/L | all year |
| 001 | Silver, total [as Ag] | DAILY AV | <= .025 mg/L | all year |
| 001 | Silver, total [as Ag] | DAILY MX | <= .05 mg/L | all year |
| 001 | Zinc, total [as Zn] | DAILY AV | <= .31 mg/L | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | <= .66 mg/L | all year |
| 001 | Selenium, total [as Se] | DAILY AV | <= .02 mg/L | all year |
| 001 | Selenium, total [as Se] | DAILY MX | <= .04 mg/L | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Mercury, total [as Hg] | DAILY AV | <= .002 mg/L | all year |
| 001 | Mercury, total [as Hg] | DAILY MX | <= .004 mg/L | all year |
| 002 | pH | MINIMUM | >= 6 SU | all year |
| 002 | pH | MAXIMUM | <= 9 SU | all year |
| 002 | Solids, total suspended | DAILY AV | <= 45 mg/L | all year |
| 002 | Arsenic, total [as As] | DAILY AV | <= .1 mg/L | all year |
| 002 | Arsenic, total [as As] | DAILY MX | <= .3 mg/L | all year |
| 002 | Barium, total [as Ba] | DAILY AV | <= 1 mg/L | all year |
| 002 | Barium, total [as Ba] | DAILY MX | <= 4 mg/L | all year |
| 002 | Cadmium, total [as Cd] | DAILY AV | <= .05 mg/L | all year |
| 002 | Cadmium, total [as Cd] | DAILY MX | <= .15 mg/L | all year |
| 002 | Chromium, total [as Cr] | DAILY AV | <= .5 mg/L | all year |
| 002 | Chromium, total [as Cr] | DAILY MX | <= 5 mg/L | all year |
| 002 | Copper, total [as Cu] | DAILY AV | <= .04 mg/L | all year |
| 002 | Copper, total [as Cu] | DAILY MX | <= .09 mg/L | all year |
| 002 | Lead, total [as Pb] | DAILY AV | <= .35 mg/L | all year |
| 002 | Lead, total [as Pb] | DAILY MX | <= .75 mg/L | all year |
| 002 | Manganese, total [as Mn] | DAILY AV | <= 1 mg/L | all year |
| 002 | Manganese, total [as Mn] | DAILY MX | <= 3 mg/L | all year |
| 002 | Nickel, total [as Ni] | DAILY AV | <= 1 mg/L | all year |
| 002 | Nickel, total [as Ni] | DAILY MX | <= 3 mg/L | all year |
| 002 | Silver, total [as Ag] | DAILY AV | <= .025 mg/L | all year |
| 002 | Silver, total [as Ag] | DAILY MX | <= .05 mg/L | all year |
| 002 | Zinc, total [as Zn] | DAILY AV | <= .31 mg/L | all year |
| 002 | Zinc, total [as Zn] | DAILY MX | <= .66 mg/L | all year |
| 002 | Selenium, total [as Se] | DAILY AV | <= .02 mg/L | all year |
| 002 | Selenium, total [as Se] | DAILY MX | <= .04 mg/L | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 002 | Mercury, total [as Hg] | DAILY AV | <= .002 mg/L | all year |
| 002 | Mercury, total [as Hg] | DAILY MX | <= .004 mg/L | all year |
| 003 | pH | MINIMUM | >= 6 SU | all year |
| 003 | pH | MAXIMUM | <= 9 SU | all year |
| 003 | Solids, total suspended | DAILY AV | <= 45 mg/L | all year |
| 003 | Arsenic, total [as As] | DAILY AV | <= .1 mg/L | all year |
| 003 | Arsenic, total [as As] | DAILY MX | <= .3 mg/L | all year |
| 003 | Barium, total [as Ba] | DAILY AV | <= 1 mg/L | all year |
| 003 | Barium, total [as Ba] | DAILY MX | <= 4 mg/L | all year |
| 003 | Cadmium, total [as Cd] | DAILY AV | <= .05 mg/L | all year |
| 003 | Cadmium, total [as Cd] | DAILY MX | <= .15 mg/L | all year |
| 003 | Chromium, total [as Cr] | DAILY AV | <= .5 mg/L | all year |
| 003 | Chromium, total [as Cr] | DAILY MX | <= 5 mg/L | all year |
| 003 | Copper, total [as Cu] | DAILY AV | <= .04 mg/L | all year |
| 003 | Copper, total [as Cu] | DAILY MX | <= .09 mg/L | all year |
| 003 | Lead, total [as Pb] | DAILY AV | <= .35 mg/L | all year |
| 003 | Lead, total [as Pb] | DAILY MX | <= .75 mg/L | all year |
| 003 | Manganese, total [as Mn] | DAILY AV | <= 1 mg/L | all year |
| 003 | Manganese, total [as Mn] | DAILY MX | <= 3 mg/L | all year |
| 003 | Nickel, total [as Ni] | DAILY AV | <= 1 mg/L | all year |
| 003 | Nickel, total [as Ni] | DAILY MX | <= 3 mg/L | all year |
| 003 | Silver, total [as Ag] | DAILY AV | <= .025 mg/L | all year |
| 003 | Silver, total [as Ag] | DAILY MX | <= .05 mg/L | all year |
| 003 | Zinc, total [as Zn] | DAILY AV | <= .31 mg/L | all year |
| 003 | Zinc, total [as Zn] | DAILY MX | <= .66 mg/L | all year |
| 003 | Selenium, total [as Se] | DAILY AV | <= .02 mg/L | all year |
| 003 | Selenium, total [as Se] | DAILY MX | <= .04 mg/L | all year |
| 003 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 003 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 003 | Mercury, total [as Hg] | DAILY AV | <= .002 mg/L | all year |
| 003 | Mercury, total [as Hg] | DAILY MX | <= .004 mg/L | all year |
| 004 | pH | MINIMUM | >= 6 SU | all year |
| 004 | pH | MAXIMUM | <= 9 SU | all year |
| 004 | Solids, total suspended | DAILY AV | <= 45 mg/L | all year |
| 004 | Arsenic, total [as As] | DAILY AV | <= .1 mg/L | all year |
| 004 | Arsenic, total [as As] | DAILY MX | <= .3 mg/L | all year |
| 004 | Barium, total [as Ba] | DAILY AV | <= 1 mg/L | all year |
| 004 | Barium, total [as Ba] | DAILY MX | <= 4 mg/L | all year |
| 004 | Cadmium, total [as Cd] | DAILY AV | <= .05 mg/L | all year |
| 004 | Cadmium, total [as Cd] | DAILY MX | <= .15 mg/L | all year |
| 004 | Chromium, total [as Cr] | DAILY AV | <= .5 mg/L | all year |
| 004 | Chromium, total [as Cr] | DAILY MX | <= 5 mg/L | all year |
| 004 | Copper, total [as Cu] | DAILY AV | <= .09 mg/L | all year |
| 004 | Copper, total [as Cu] | DAILY MX | <= .09 mg/L | all year |
| 004 | Lead, total [as Pb] | DAILY AV | <= .35 mg/L | all year |
| 004 | Lead, total [as Pb] | DAILY MX | <= .75 mg/L | all year |
| 004 | Manganese, total [as Mn] | DAILY AV | <= 1 mg/L | all year |
| 004 | Manganese, total [as Mn] | DAILY MX | <= 3 mg/L | all year |
| 004 | Nickel, total [as Ni] | DAILY AV | <= 1 mg/L | all year |
| 004 | Nickel, total [as Ni] | DAILY MX | <= 3 mg/L | all year |
| 004 | Silver, total [as Ag] | DAILY AV | <= .025 mg/L | all year |
| 004 | Silver, total [as Ag] | DAILY MX | <= .05 mg/L | all year |
| 004 | Zinc, total [as Zn] | DAILY AV | <= .31 mg/L | all year |
| 004 | Zinc, total [as Zn] | DAILY MX | <= .66 mg/L | all year |
| 004 | Selenium, total [as Se] | DAILY AV | <= .02 mg/L | all year |
| 004 | Selenium, total [as Se] | DAILY MX | <= .04 mg/L | all year |
| 004 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 004 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 004 | Mercury, total [as Hg] | DAILY AV | <= .002 mg/L | all year |
| 004 | Mercury, total [as Hg] | DAILY MX | <= .004 mg/L | all year |
| 005 | pH | MINIMUM | >= 6 SU | all year |
| 005 | pH | MAXIMUM | <= 9 SU | all year |
| 005 | Solids, total suspended | DAILY AV | <= 45 mg/L | all year |
| 005 | Arsenic, total [as As] | DAILY AV | <= .1 mg/L | all year |
| 005 | Arsenic, total [as As] | DAILY MX | <= .3 mg/L | all year |
| 005 | Barium, total [as Ba] | DAILY AV | <= 1 mg/L | all year |
| 005 | Barium, total [as Ba] | DAILY MX | <= 4 mg/L | all year |
| 005 | Cadmium, total [as Cd] | DAILY AV | <= .05 mg/L | all year |
| 005 | Cadmium, total [as Cd] | DAILY MX | <= .15 mg/L | all year |
| 005 | Chromium, total [as Cr] | DAILY AV | <= .5 mg/L | all year |
| 005 | Chromium, total [as Cr] | DAILY MX | <= 5 mg/L | all year |
| 005 | Copper, total [as Cu] | DAILY AV | <= .04 mg/L | all year |
| 005 | Copper, total [as Cu] | DAILY MX | <= .09 mg/L | all year |
| 005 | Lead, total [as Pb] | DAILY AV | <= .35 mg/L | all year |
| 005 | Lead, total [as Pb] | DAILY MX | <= .75 mg/L | all year |
| 005 | Manganese, total [as Mn] | DAILY AV | <= 1 mg/L | all year |
| 005 | Manganese, total [as Mn] | DAILY MX | <= 3 mg/L | all year |
| 005 | Nickel, total [as Ni] | DAILY AV | <= 1 mg/L | all year |
| 005 | Nickel, total [as Ni] | DAILY MX | <= 3 mg/L | all year |
| 005 | Silver, total [as Ag] | DAILY AV | <= .025 mg/L | all year |
| 005 | Silver, total [as Ag] | DAILY MX | <= .05 mg/L | all year |
| 005 | Zinc, total [as Zn] | DAILY AV | <= .31 mg/L | all year |
| 005 | Zinc, total [as Zn] | DAILY MX | <= .66 mg/L | all year |
| 005 | Selenium, total [as Se] | DAILY AV | <= .02 mg/L | all year |
| 005 | Selenium, total [as Se] | DAILY MX | <= .04 mg/L | all year |
| 005 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 005 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 005 | Mercury, total [as Hg] | DAILY AV | <= .002 mg/L | all year |
| 005 | Mercury, total [as Hg] | DAILY MX | <= .004 mg/L | all year |
| 006 | pH | MINIMUM | >= 6 SU | all year |
| 006 | pH | MAXIMUM | <= 9 SU | all year |
| 006 | Solids, total suspended | DAILY AV | <= 45 mg/L | all year |
| 006 | Arsenic, total [as As] | DAILY AV | <= .1 mg/L | all year |
| 006 | Arsenic, total [as As] | DAILY MX | <= .3 mg/L | all year |
| 006 | Barium, total [as Ba] | DAILY AV | <= 1 mg/L | all year |
| 006 | Barium, total [as Ba] | DAILY MX | <= 4 mg/L | all year |
| 006 | Cadmium, total [as Cd] | DAILY AV | <= .05 mg/L | all year |
| 006 | Cadmium, total [as Cd] | DAILY MX | <= .15 mg/L | all year |
| 006 | Chromium, total [as Cr] | DAILY AV | <= .5 mg/L | all year |
| 006 | Chromium, total [as Cr] | DAILY MX | <= 5 mg/L | all year |
| 006 | Copper, total [as Cu] | DAILY AV | <= .04 mg/L | all year |
| 006 | Copper, total [as Cu] | DAILY MX | <= .09 mg/L | all year |
| 006 | Lead, total [as Pb] | DAILY AV | <= .35 mg/L | all year |
| 006 | Lead, total [as Pb] | DAILY MX | <= .75 mg/L | all year |
| 006 | Manganese, total [as Mn] | DAILY AV | <= 1 mg/L | all year |
| 006 | Manganese, total [as Mn] | DAILY MX | <= 3 mg/L | all year |
| 006 | Nickel, total [as Ni] | DAILY AV | <= 1 mg/L | all year |
| 006 | Nickel, total [as Ni] | DAILY MX | <= 3 mg/L | all year |
| 006 | Silver, total [as Ag] | DAILY AV | <= .025 mg/L | all year |
| 006 | Silver, total [as Ag] | DAILY MX | <= .05 mg/L | all year |
| 006 | Zinc, total [as Zn] | DAILY AV | <= .31 mg/L | all year |
| 006 | Zinc, total [as Zn] | DAILY MX | <= .66 mg/L | all year |
| 006 | Selenium, total [as Se] | DAILY AV | <= .02 mg/L | all year |
| 006 | Selenium, total [as Se] | DAILY MX | <= .04 mg/L | all year |
| 006 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 006 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 006 | Mercury, total [as Hg] | DAILY AV | <= .002 mg/L | all year |
| 006 | Mercury, total [as Hg] | DAILY MX | <= .004 mg/L | all year |
| 007 | pH | MINIMUM | >= 6 SU | all year |
| 007 | pH | MAXIMUM | <= 9 SU | all year |
| 007 | Solids, total suspended | DAILY AV | <= 45 mg/L | all year |
| 007 | Arsenic, total [as As] | DAILY AV | <= .1 mg/L | all year |
| 007 | Arsenic, total [as As] | DAILY MX | <= .3 mg/L | all year |
| 007 | Barium, total [as Ba] | DAILY AV | <= 1 mg/L | all year |
| 007 | Barium, total [as Ba] | DAILY MX | <= 4 mg/L | all year |
| 007 | Cadmium, total [as Cd] | DAILY AV | <= .05 mg/L | all year |
| 007 | Cadmium, total [as Cd] | DAILY MX | <= .15 mg/L | all year |
| 007 | Chromium, total [as Cr] | DAILY AV | <= .5 mg/L | all year |
| 007 | Chromium, total [as Cr] | DAILY MX | <= 5 mg/L | all year |
| 007 | Copper, total [as Cu] | DAILY AV | <= .04 mg/L | all year |
| 007 | Copper, total [as Cu] | DAILY MX | <= .09 mg/L | all year |
| 007 | Lead, total [as Pb] | DAILY AV | <= .35 mg/L | all year |
| 007 | Lead, total [as Pb] | DAILY MX | <= .75 mg/L | all year |
| 007 | Manganese, total [as Mn] | DAILY AV | <= 1 mg/L | all year |
| 007 | Manganese, total [as Mn] | DAILY MX | <= 3 mg/L | all year |
| 007 | Nickel, total [as Ni] | DAILY AV | <= 1 mg/L | all year |
| 007 | Nickel, total [as Ni] | DAILY MX | <= 3 mg/L | all year |
| 007 | Silver, total [as Ag] | DAILY AV | <= .025 mg/L | all year |
| 007 | Silver, total [as Ag] | DAILY MX | <= .05 mg/L | all year |
| 007 | Zinc, total [as Zn] | DAILY AV | <= .31 mg/L | all year |
| 007 | Zinc, total [as Zn] | DAILY MX | <= .66 mg/L | all year |
| 007 | Selenium, total [as Se] | DAILY AV | <= .02 mg/L | all year |
| 007 | Selenium, total [as Se] | DAILY MX | <= .04 mg/L | all year |
| 007 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 007 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 007 | Mercury, total [as Hg] | DAILY AV | <= .002 mg/L | all year |
| 007 | Mercury, total [as Hg] | DAILY MX | <= .004 mg/L | all year |
| 008 | pH | MINIMUM | >= 6 SU | all year |
| 008 | pH | MAXIMUM | <= 9 SU | all year |
| 008 | Solids, total suspended | DAILY AV | <= 45 mg/L | all year |
| 008 | Arsenic, total [as As] | DAILY AV | <= .1 mg/L | all year |
| 008 | Arsenic, total [as As] | DAILY MX | <= .3 mg/L | all year |
| 008 | Barium, total [as Ba] | DAILY AV | <= 1 mg/L | all year |
| 008 | Barium, total [as Ba] | DAILY MX | <= 4 mg/L | all year |
| 008 | Cadmium, total [as Cd] | DAILY AV | <= .05 mg/L | all year |
| 008 | Cadmium, total [as Cd] | DAILY MX | <= .15 mg/L | all year |
| 008 | Chromium, total [as Cr] | DAILY AV | <= .5 mg/L | all year |
| 008 | Chromium, total [as Cr] | DAILY MX | <= 5 mg/L | all year |
| 008 | Copper, total [as Cu] | DAILY AV | <= .04 mg/L | all year |
| 008 | Copper, total [as Cu] | DAILY MX | <= .09 mg/L | all year |
| 008 | Lead, total [as Pb] | DAILY AV | <= .35 mg/L | all year |
| 008 | Lead, total [as Pb] | DAILY MX | <= .75 mg/L | all year |
| 008 | Manganese, total [as Mn] | DAILY AV | <= 1 mg/L | all year |
| 008 | Manganese, total [as Mn] | DAILY MX | <= 3 mg/L | all year |
| 008 | Nickel, total [as Ni] | DAILY AV | <= 1 mg/L | all year |
| 008 | Nickel, total [as Ni] | DAILY MX | <= 3 mg/L | all year |
| 008 | Silver, total [as Ag] | DAILY AV | <= .025 mg/L | all year |
| 008 | Silver, total [as Ag] | DAILY MX | <= .05 mg/L | all year |
| 008 | Zinc, total [as Zn] | DAILY AV | <= .31 mg/L | all year |
| 008 | Zinc, total [as Zn] | DAILY MX | <= .66 mg/L | all year |
| 008 | Selenium, total [as Se] | DAILY AV | <= .02 mg/L | all year |
| 008 | Selenium, total [as Se] | DAILY MX | <= .04 mg/L | all year |
| 008 | Flow, in conduit or thru treatment plant | DAILY AV | report only | all year |
| 008 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 008 | Mercury, total [as Hg] | DAILY AV | <= .002 mg/L | all year |
| 008 | Mercury, total [as Hg] | DAILY MX | <= .004 mg/L | all year |
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