COVIA CLAY LLC

NPDES permit TX0104175 · Minor NON-POTW · effective, expires 2026-12-02 · 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

3values over a limit
0required values missing, on 0 form(s)
54of 193 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (2), Sulfate, total [as SO4] (1).

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 (158)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 35 mg/L all year
001Solids, total suspendedDAILY MX <= 70 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY AV <= 35 mg/L all year
002Solids, total suspendedDAILY MX <= 70 mg/L all year
002Flow, in conduit or thru treatment plantDAILY AV report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
005pHMINIMUM >= 6 SU all year
005pHMAXIMUM <= 9 SU all year
005Solids, total suspendedDAILY AV <= 35 mg/L all year
005Solids, total suspendedDAILY MX <= 70 mg/L all year
005Flow, in conduit or thru treatment plantDAILY AV report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
006pHMINIMUM >= 6 SU all year
006pHMAXIMUM <= 9 SU all year
006Solids, total suspendedDAILY AV <= 35 mg/L all year
006Solids, total suspendedDAILY MX <= 70 mg/L all year
006Flow, in conduit or thru treatment plantDAILY AV report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
007pHMINIMUM >= 6 SU all year
007pHMAXIMUM <= 9 SU all year
007Solids, total suspendedDAILY AV <= 35 mg/L all year
007Solids, total suspendedDAILY MX <= 70 mg/L all year
007Sulfate, total [as SO4]DAILY AV report only all year
007Sulfate, total [as SO4]DAILY MX report only all year
007Flow, in conduit or thru treatment plantDAILY AV report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Solids, total dissolvedDAILY AV report only all year
007Solids, total dissolvedDAILY MX report only all year
008pHMINIMUM >= 6 SU all year
008pHMAXIMUM <= 9 SU all year
008Solids, total suspendedDAILY AV <= 35 mg/L all year
008Solids, total suspendedDAILY MX <= 70 mg/L all year
008Flow, in conduit or thru treatment plantDAILY AV report only all year
008Flow, in conduit or thru treatment plantDAILY MX report only all year
101Sulfate, total [as SO4]DAILY MX <= 1696 mg/L all year
101Copper, total [as Cu]DAILY AV <= .032 mg/L all year
101Copper, total [as Cu]DAILY MX <= .068 mg/L all year
101Nickel, total [as Ni]DAILY MX <= 1.771 mg/L all year
101Zinc, total [as Zn]DAILY AV <= .319 mg/L all year
101Zinc, total [as Zn]DAILY MX <= .675 mg/L all year
101Aluminum, total [as Al]DAILY AV <= .834 mg/L all year
101Aluminum, total [as Al]DAILY MX <= 1.765 mg/L all year
101Flow, in conduit or thru treatment plantDAILY AV report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
101Flow, in conduit or thru treatment plantMINIMUM >= 8.93 cfs all year
101Solids, total dissolvedDAILY AV <= 4000 mg/L all year
101Solids, total dissolvedDAILY MX <= 8480 mg/L all year
102Sulfate, total [as SO4]DAILY MX <= 1696 mg/L all year
102Flow, in conduit or thru treatment plantDAILY AV report only all year
102Flow, in conduit or thru treatment plantDAILY MX report only all year
102Flow, in conduit or thru treatment plantMINIMUM >= 8.93 cfs all year
102Solids, total dissolvedDAILY AV report only all year
102Solids, total dissolvedDAILY MX report only all year
105Sulfate, total [as SO4]DAILY MX <= 1696 mg/L all year
105Flow, in conduit or thru treatment plantDAILY AV report only all year
105Flow, in conduit or thru treatment plantDAILY MX report only all year
105Flow, in conduit or thru treatment plantMINIMUM >= 8.93 cfs all year
105Solids, total dissolvedDAILY AV report only all year
105Solids, total dissolvedDAILY MX report only all year
106Sulfate, total [as SO4]DAILY AV report only all year
106Sulfate, total [as SO4]DAILY MX <= 1696 mg/L all year
106Zinc, total [as Zn]DAILY MX <= .675 mg/L all year
106Aluminum, total [as Al]DAILY AV <= .834 mg/L all year
106Aluminum, total [as Al]DAILY MX <= 1.765 mg/L all year
106Flow, in conduit or thru treatment plantDAILY AV report only all year
106Flow, in conduit or thru treatment plantDAILY MX report only all year
106Flow, in conduit or thru treatment plantMINIMUM >= 8.93 cfs all year
106Solids, total dissolvedDAILY AV report only all year
106Solids, total dissolvedDAILY MX report only all year
201Sulfate, total [as SO4]DAILY MX <= 1696 mg/L all year
201Copper, total [as Cu]DAILY AV <= .032 mg/L all year
201Copper, total [as Cu]DAILY MX <= .068 mg/L all year
201Nickel, total [as Ni]DAILY MX <= 1.771 mg/L all year
201Zinc, total [as Zn]DAILY AV <= .319 mg/L all year
201Zinc, total [as Zn]DAILY MX <= .675 mg/L all year
201Aluminum, total [as Al]DAILY AV <= .834 mg/L all year
201Aluminum, total [as Al]DAILY MX <= 1.765 mg/L all year
201Flow, in conduit or thru treatment plantDAILY AV report only all year
201Flow, in conduit or thru treatment plantDAILY MX report only all year
201Flow, in conduit or thru treatment plantMINIMUM >= 4.46 cfs all year
201Flow, in conduit or thru treatment plantDAILY MX <= 8.92 cfs all year
201Solids, total dissolvedDAILY AV <= 4000 mg/L all year
201Solids, total dissolvedDAILY MX <= 8480 mg/L all year
202Sulfate, total [as SO4]DAILY MX <= 1696 mg/L all year
202Flow, in conduit or thru treatment plantDAILY AV report only all year
202Flow, in conduit or thru treatment plantDAILY MX report only all year
202Flow, in conduit or thru treatment plantMINIMUM >= 4.46 cfs all year
202Flow, in conduit or thru treatment plantDAILY MX <= 8.92 cfs all year
202Solids, total dissolvedDAILY AV report only all year
202Solids, total dissolvedDAILY MX report only all year
205Sulfate, total [as SO4]DAILY MX <= 1696 mg/L all year
205Flow, in conduit or thru treatment plantDAILY AV report only all year
205Flow, in conduit or thru treatment plantDAILY MX report only all year
205Flow, in conduit or thru treatment plantMINIMUM >= 4.46 cfs all year
205Flow, in conduit or thru treatment plantDAILY MX <= 8.92 cfs all year
205Solids, total dissolvedDAILY AV report only all year
205Solids, total dissolvedDAILY MX report only all year
206Sulfate, total [as SO4]DAILY AV report only all year
206Sulfate, total [as SO4]DAILY MX <= 1696 mg/L all year
206Zinc, total [as Zn]DAILY MX <= .675 mg/L all year
206Aluminum, total [as Al]DAILY AV <= .834 mg/L all year
206Aluminum, total [as Al]DAILY MX <= 1.765 mg/L all year
206Flow, in conduit or thru treatment plantDAILY AV report only all year
206Flow, in conduit or thru treatment plantDAILY MX report only all year
206Flow, in conduit or thru treatment plantMINIMUM >= 4.46 cfs all year
206Flow, in conduit or thru treatment plantDAILY MX <= 8.92 cfs all year
206Solids, total dissolvedDAILY AV report only all year
206Solids, total dissolvedDAILY MX report only all year
301Sulfate, total [as SO4]DAILY AV <= 69 mg/L all year
301Sulfate, total [as SO4]DAILY MX <= 146 mg/L all year
301Copper, total [as Cu]DAILY AV <= .029 mg/L all year
301Copper, total [as Cu]DAILY MX <= .061 mg/L all year
301Nickel, total [as Ni]DAILY AV <= .124 mg/L all year
301Nickel, total [as Ni]DAILY MX <= .264 mg/L all year
301Zinc, total [as Zn]DAILY AV <= .319 mg/L all year
301Zinc, total [as Zn]DAILY MX <= .675 mg/L all year
301Aluminum, total [as Al]DAILY AV <= .834 mg/L all year
301Aluminum, total [as Al]DAILY MX <= 1.765 mg/L all year
301Flow, in conduit or thru treatment plantDAILY AV report only all year
301Flow, in conduit or thru treatment plantDAILY MX report only all year
301Flow, in conduit or thru treatment plantMINIMUM report only all year
301Flow, in conduit or thru treatment plantDAILY MX <= 4.45 cfs all year
301Solids, total dissolvedDAILY AV <= 346 mg/L all year
301Solids, total dissolvedDAILY MX <= 732 mg/L all year
302Sulfate, total [as SO4]DAILY AV <= 68 mg/L all year
302Sulfate, total [as SO4]DAILY MX <= 145 mg/L all year
302Flow, in conduit or thru treatment plantDAILY AV report only all year
302Flow, in conduit or thru treatment plantDAILY MX report only all year
302Flow, in conduit or thru treatment plantMINIMUM report only all year
302Flow, in conduit or thru treatment plantDAILY MX <= 4.45 cfs all year
302Solids, total dissolvedDAILY AV <= 343 mg/L all year
302Solids, total dissolvedDAILY MX <= 727 mg/L all year
305Sulfate, total [as SO4]DAILY AV <= 69 mg/L all year
305Sulfate, total [as SO4]DAILY MX <= 147 mg/L all year
305Flow, in conduit or thru treatment plantDAILY AV report only all year
305Flow, in conduit or thru treatment plantDAILY MX report only all year
305Flow, in conduit or thru treatment plantMINIMUM report only all year
305Flow, in conduit or thru treatment plantDAILY MX <= 4.45 cfs all year
305Solids, total dissolvedDAILY AV <= 347 mg/L all year
305Solids, total dissolvedDAILY MX <= 735 mg/L all year
306Sulfate, total [as SO4]DAILY AV <= 68 mg/L all year
306Sulfate, total [as SO4]DAILY MX <= 145 mg/L all year
306Zinc, total [as Zn]DAILY AV <= .319 mg/L all year
306Zinc, total [as Zn]DAILY MX <= .675 mg/L all year
306Aluminum, total [as Al]DAILY AV <= .834 mg/L all year
306Aluminum, total [as Al]DAILY MX <= 1.765 mg/L all year
306Flow, in conduit or thru treatment plantDAILY AV report only all year
306Flow, in conduit or thru treatment plantDAILY MX report only all year
306Flow, in conduit or thru treatment plantMINIMUM report only all year
306Flow, in conduit or thru treatment plantDAILY MX <= 4.45 cfs all year
306Solids, total dissolvedDAILY AV <= 343 mg/L all year
306Solids, total dissolvedDAILY MX <= 727 mg/L 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