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Plants facing new discharge limits — by state and pollutant

In Texas: 57 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Nov 1, 2026 and Sep 1, 2029 (308 limits); 10 of them reported a median above that limit between Oct 1, 2025 and Sep 30, 2026. EPA's file of Oct 16, 2026.

By state: all · IA 204 · PA 172 · LA 165 · OH 134 · MS 68 · AR 58 · TX 57 · MI 53 · GA 52 · VA 52 · MD 48 · NJ 35 · IN 31 · SC 23 · KS 21 · MN 21 · NY 21 · MO 20 · WV 17 · OR 16 · IL 14 · FL 10 · NE 9 · OK 8 · TN 8 · CO 7 · UT 7 · NM 6 · CA 5 · SD 5 · CT 3 · ID 3 · ME 2 · WI 2 · AL 1 · DC 1 · KY 1 · MT 1 · NH 1 · PR 1 · VT 1 · WA 1

By pollutant: Zinc, total [as Zn] 11 · BOD, carbonaceous [5 day, 20 C] 8 · Copper, total [as Cu] 8 · Benzo[a]anthracene 7 · Benzo[a]pyrene 7 · Hexachlorobenzene 7 · Nitrogen, ammonia total [as N] 7 · Solids, total suspended 6 · Hexachlorobutadiene 5 · Cyanide, free [as free] 4 · Solids, total dissolved 4 · Aluminum, total [as Al] 3 · Chromium, hexavalent [as Cr] 3 · Nickel, total [as Ni] 3 · Selenium, total [as Se] 3 · Chloride [as Cl] 2 · Di[2-ethylhexyl] phthalate [DEHP] 2 · Enterococci 2 · Flow, in conduit or thru treatment plant 2 · Hexachloroethane 2 · Lead, total [as Pb] 2 · Phosphorus, total [as P] 2 · 1,2-Dichloropropane 1 · 4,4'-DDT 1 · Barium, total [as Ba] 1

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
FREEPORT LNG DEVELOPMENT LPTX0134056TXIndustrial—Chloridedaily average 569 mg/L, newFeb 1, 2027660 mg/L (5 values)1.16×
FREEPORT LNG DEVELOPMENT LPTX0127566TXIndustrial—Copper, total [as Cu]daily average 0.0241 mg/L, newMar 1, 20270.41 mg/L (8 values)17×
FREEPORT LNG DEVELOPMENT LPTX0127566TXIndustrial—Copper, total [as Cu]daily maximum 0.0511 mg/L, newMar 1, 20270.47 mg/L (8 values)9.2×
FREEPORT LNG DEVELOPMENT LPTX0127566TXIndustrial—Zinc, total [as Zn]daily average 0.255 mg/L, newMar 1, 20270.937 mg/L (8 values)3.67×
FREEPORT LNG DEVELOPMENT LPTX0127566TXIndustrial—Zinc, total [as Zn]daily maximum 0.539 mg/L, newMar 1, 20271.065 mg/L (8 values)1.98×
ODFJELL TERMINALS (HOUSTON) INCTX0089192TXIndustrial—Zinc, total [as Zn]daily average 0.245 mg/L, newJul 1, 20270.248 mg/L (9 values)1.01×
GEORGIA-PACIFIC WOOD PRODUCTS LLCTX0006076TXIndustrial.01 MGDZinc, total [as Zn]daily maximum 0.443 mg/L, newNov 1, 20271.105 mg/L (4 values)2.49×
HARTREE CHANNELVIEW LLCTX0136573TXIndustrial—Zinc, total [as Zn]daily average 0.15 mg/L, newDec 1, 20270.26 mg/L (11 values)1.73×
HARTREE CHANNELVIEW LLCTX0136573TXIndustrial—Zinc, total [as Zn]daily maximum 0.318 mg/L, newDec 1, 20270.4 mg/L (11 values)1.26×
FOREMARK PERFORMANCE CHEMICALS INCTX0122335TXIndustrial.6 MGDZinc, total [as Zn]daily average 0.25 mg/L, newMar 1, 202827.8 mg/L (11 values)111×
FOREMARK PERFORMANCE CHEMICALS INCTX0122335TXIndustrial.6 MGDZinc, total [as Zn]daily maximum 0.53 mg/L, newMar 1, 202843.1 mg/L (11 values)81.3×
ENERGY TRANSFER GC NGL FRACTIONATORS LLCTX0134068TXIndustrial.936 MGDOxygen, dissolved [DO]daily average 2 mg/L, newMar 1, 20295.93 mg/L (7 values)2.96×
TWU-WHOLESALE SERVICES INCTX0136590TXIndustrial.55 MGDSelenium, total [as Se]daily average 0.0168 mg/L, newMay 1, 20290.03059 mg/L (4 values)1.82×
TWU-WHOLESALE SERVICES INCTX0136590TXIndustrial.55 MGDSelenium, total [as Se]daily maximum 0.0356 mg/L, newMay 1, 20290.0375 mg/L (4 values)1.05×
STUDY BUTTE WATER SUPPLY CORPORATIONTX0133183TXIndustrial.2 MGDChloride [as Cl]daily average 785 mg/L, newJun 1, 2029976 mg/L (11 values)1.24×
CHEMICALS INCORPORATEDTX0118427TXIndustrial.39 MGDNitrogen, ammonia total [as N]daily average 11.5 mg/L, tighterJul 1, 202918.5 mg/L (9 values)1.61×
TRINITY RIVER AUTHORITY OF TEXASTX0104957TXSewage plant, major4.9 MGDFlow, in conduit or thru treatment plant2P 16806 gal/min, tighterNov 1, 202611040 gal/min (11 values)0.657×
TRINITY RIVER AUTHORITY OF TEXASTX0104957TXSewage plant, major4.9 MGDFlow, in conduit or thru treatment plant2P 16806 gal/min, tighterNov 1, 202610330 gal/min (11 values)0.614×
COLETO CREEK POWER, LLCTX0070068TXIndustrial, major557 MGDCopper, total [as Cu]daily average 0.5 mg/L, newNov 1, 2026under 3 values—
COLETO CREEK POWER, LLCTX0070068TXIndustrial, major557 MGDCopper, total [as Cu]daily maximum 1 mg/L, newNov 1, 2026under 3 values—
COLETO CREEK POWER, LLCTX0070068TXIndustrial, major557 MGDIron, total [as Fe]daily average 1 mg/L, newNov 1, 2026under 3 values—
COLETO CREEK POWER, LLCTX0070068TXIndustrial, major557 MGDIron, total [as Fe]daily maximum 1 mg/L, newNov 1, 2026under 3 values—
COLETO CREEK POWER, LLCTX0070068TXIndustrial, major557 MGDOil & Greasedaily average 15 mg/L, newNov 1, 2026under 3 values—
COLETO CREEK POWER, LLCTX0070068TXIndustrial, major557 MGDOil & Greasedaily maximum 20 mg/L, newNov 1, 2026under 3 values—
COLETO CREEK POWER, LLCTX0070068TXIndustrial, major557 MGDSolids, total suspendeddaily average 30 mg/L, newNov 1, 2026under 3 values—
COLETO CREEK POWER, LLCTX0070068TXIndustrial, major557 MGDSolids, total suspendeddaily maximum 100 mg/L, newNov 1, 2026under 3 values—
COLETO CREEK POWER, LLCTX0070068TXIndustrial, major557 MGDpHmaximum 9 SU, newNov 1, 2026under 3 values—
RIVER RANCH MUD 1TX0137901TXSewage plant.9 MGDBOD, carbonaceous [5 day, 20 C]daily maximum 25 mg/L, tighterNov 1, 2026under 3 values—
RIVER RANCH MUD 1TX0137901TXSewage plant.9 MGDNitrogen, ammonia total [as N]daily maximum 10 mg/L, tighterNov 1, 2026under 3 values—
RIVER RANCH MUD 1TX0137901TXSewage plant.9 MGDSolids, total suspendeddaily maximum 40 mg/L, tighterNov 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDNickel, total [as Ni]daily average 0.018 mg/L, tighterDec 1, 20260.0055 mg/L (6 values)0.306×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDNickel, total [as Ni]daily maximum 0.037 mg/L, tighterDec 1, 20260.0105 mg/L (6 values, 2 below detection)0.284×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDZinc, total [as Zn]daily average 0.138 mg/L, tighterDec 1, 20260.0345 mg/L (6 values)0.25×
TOMBALL, CITY OFTX0117595TXSewage plant, major1.5 MGDCopper, total [as Cu]daily average 0.017 mg/L, newDec 1, 20260.004 mg/L (11 values)0.235×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDZinc, total [as Zn]daily maximum 0.292 mg/L, tighterDec 1, 20260.051 mg/L (6 values)0.175×
TOMBALL, CITY OFTX0117595TXSewage plant, major1.5 MGDCopper, total [as Cu]daily average 0.21 lb/d, newDec 1, 20260.036 lb/d (11 values)0.171×
TOMBALL, CITY OFTX0117595TXSewage plant, major1.5 MGDCopper, total [as Cu]daily maximum 0.036 mg/L, newDec 1, 20260.00463 mg/L (11 values)0.129×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGD4,4'-DDTdaily average 0.000908 lb/d, newDec 1, 20260 lb/d (12 values)0×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGD4,4'-DDTdaily average 0.000011 mg/L, newDec 1, 20260 mg/L (12 values)0×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGD4,4'-DDTdaily maximum 0.00198 lb/d, newDec 1, 20260 lb/d (12 values)0×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGD4,4'-DDTdaily maximum 0.000024 mg/L, newDec 1, 20260 mg/L (12 values)0×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDPolychlorinated biphenyls [PCBs]daily average 0.0018 lb/d, newDec 1, 20260 lb/d (12 values)0×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDPolychlorinated biphenyls [PCBs]daily average 0.000022 mg/L, newDec 1, 20260 mg/L (12 values)0×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDPolychlorinated biphenyls [PCBs]daily maximum 0.000046 mg/L, newDec 1, 20260 mg/L (12 values)0×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDPolychlorinated biphenyls [PCBs]daily maximum 0.0038 lb/d, newDec 1, 20260 lb/d (12 values)0×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDCopper, total [as Cu]daily average 0.01 mg/L, tighterDec 1, 20260 mg/L (6 values)0×
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDLead, total [as Pb]daily average 0.019 mg/L, tighterDec 1, 20260 mg/L (6 values)0×
MONUMENT CHEMICAL HOUSTON LLCTX0085979TXIndustrial.22 MGDBenzo[a]anthracenedaily average 0.002 lb/d, tighterDec 1, 2026under 3 values—
MONUMENT CHEMICAL HOUSTON LLCTX0085979TXIndustrial.22 MGDBenzo[a]anthracenedaily maximum 0.003 lb/d, tighterDec 1, 2026under 3 values—
MONUMENT CHEMICAL HOUSTON LLCTX0085979TXIndustrial.22 MGDBenzo[a]pyrenedaily average 0.0002 lb/d, tighterDec 1, 2026under 3 values—
MONUMENT CHEMICAL HOUSTON LLCTX0085979TXIndustrial.22 MGDBenzo[a]pyrenedaily maximum 0.0003 lb/d, tighterDec 1, 2026under 3 values—
MONUMENT CHEMICAL HOUSTON LLCTX0085979TXIndustrial.22 MGDHexachlorobenzenedaily average 0.000043 lb/d, tighterDec 1, 2026under 3 values—
MONUMENT CHEMICAL HOUSTON LLCTX0085979TXIndustrial.22 MGDHexachlorobenzenedaily maximum 0.0000901 lb/d, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGD1,2-Dichloropropanedaily average 0.61 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGD1,2-Dichloropropanedaily maximum 1.28 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDBenzo[a]anthracenedaily average 0.00006 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDBenzo[a]anthracenedaily maximum 0.00012 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDBenzo[a]pyrenedaily average 0.000006 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDBenzo[a]pyrenedaily maximum 0.000012 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDCarbon tetrachloridedaily average 0.107 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDCarbon tetrachloridedaily maximum 0.227 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDChromium, hexavalent [as Cr]daily average 0.0721 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDChromium, hexavalent [as Cr]daily maximum 0.152 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDCopper, total [as Cu]daily average 0.011 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDCopper, total [as Cu]daily maximum 0.023 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDDi[2-ethylhexyl] phthalate [DEHP]daily average 0.0176 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 0.0373 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDHexachlorobenzenedaily average 0.000002 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDHexachlorobenzenedaily maximum 0.000003 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDHexachloroethanedaily average 0.005 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDHexachloroethanedaily maximum 0.012 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDLead, total [as Pb]daily average 0.02 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDLead, total [as Pb]daily maximum 0.043 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDNickel, total [as Ni]daily average 0.019 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDNickel, total [as Ni]daily maximum 0.0403 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDPhenanthrenedaily average 0.007 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDPhenanthrenedaily maximum 0.014 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDTetrachloroethylenedaily average 0.654 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDTetrachloroethylenedaily maximum 1.385 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDVinyl chloridedaily average 0.0385 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDVinyl chloridedaily maximum 0.0816 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDZinc, total [as Zn]daily average 0.141 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDZinc, total [as Zn]daily maximum 0.299 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDHexachlorobenzenedaily average 0.00192 lb/d, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDHexachlorobenzenedaily maximum 0.00406 lb/d, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDChromium, hexavalent [as Cr]daily average 0.067 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDChromium, hexavalent [as Cr]daily maximum 0.141 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDCopper, total [as Cu]daily maximum 0.021 mg/L, tighterDec 1, 20260.01 mg/L (6 values, 5 below detection)—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDLead, total [as Pb]daily maximum 0.04 mg/L, tighterDec 1, 20260.005 mg/L (6 values, 5 below detection)—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDPhenanthrenedaily average 0.006 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDPhenanthrenedaily maximum 0.013 mg/L, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDBenzo[a]anthracenedaily maximum 0.15 lb/d, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDBenzo[a]pyrenedaily average 0.0071 lb/d, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDBenzo[a]pyrenedaily maximum 0.015 lb/d, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDHexachlorobenzenedaily average 0.0019 lb/d, tighterDec 1, 2026under 3 values—
SHELL CHEMICAL LPTX0004863TXIndustrial, major9.9 MGDHexachlorobenzenedaily maximum 0.0041 lb/d, tighterDec 1, 2026under 3 values—
KYLE, CITY OFTX0119466TXSewage plant, major9 MGDBOD, carbonaceous [5 day, 20 C]daily average 7 mg/L, tighterJan 1, 20273.15 mg/L (11 values)0.45×
KYLE, CITY OFTX0119466TXSewage plant, major9 MGDBOD, carbonaceous [5 day, 20 C]daily average 350 lb/d, tighterJan 1, 2027119.3 lb/d (11 values)0.341×
KYLE, CITY OFTX0119466TXSewage plant, major9 MGDBOD, carbonaceous [5 day, 20 C]daily maximum 22 mg/L, tighterJan 1, 20274 mg/L (11 values)0.182×
KYLE, CITY OFTX0119466TXSewage plant, major9 MGDSolids, total suspendeddaily average 12 mg/L, tighterJan 1, 20271.78 mg/L (11 values)0.148×
KYLE, CITY OFTX0119466TXSewage plant, major9 MGDPhosphorus, total [as P]daily average 25 lb/d, newJan 1, 2027under 3 values—
KYLE, CITY OFTX0119466TXSewage plant, major9 MGDPhosphorus, total [as P]daily average 0.5 mg/L, newJan 1, 2027under 3 values—
KYLE, CITY OFTX0119466TXSewage plant, major9 MGDPhosphorus, total [as P]daily maximum 2 mg/L, newJan 1, 2027under 3 values—
FREEPORT LNG DEVELOPMENT LPTX0134056TXIndustrial—Solids, total dissolveddaily average 1306 mg/L, newFeb 1, 20271109 mg/L (5 values)0.849×
FREEPORT LNG DEVELOPMENT LPTX0134056TXIndustrial—Chloridedaily maximum 1204 mg/L, newFeb 1, 2027660 mg/L (5 values)0.548×
FREEPORT LNG DEVELOPMENT LPTX0134056TXIndustrial—Solids, total dissolveddaily maximum 2763 mg/L, newFeb 1, 20271109 mg/L (5 values)0.401×
SOUTH COAST TERMINALS LLCTX0106208TXIndustrial—Mercury, total [as Hg]daily average 0.000854 mg/L, newFeb 1, 20270.00000224 mg/L (8 values)0.00262×
SOUTH COAST TERMINALS LLCTX0106208TXIndustrial—Mercury, total [as Hg]daily maximum 0.0018 mg/L, newFeb 1, 20270.00000224 mg/L (8 values)0.00124×
INTERCONTINENTAL TERMINALS COMPANY LLCTX0135593TXIndustrial—Nickel, total [as Ni]daily average 0.146 mg/L, tighterFeb 1, 20270 mg/L (5 values)0×
INTERCONTINENTAL TERMINALS COMPANY LLCTX0135593TXIndustrial—Nickel, total [as Ni]daily maximum 0.31 mg/L, tighterFeb 1, 20270 mg/L (5 values)0×
METTON AMERICA INCTX0084808TXIndustrial—Benzidinedaily average 0.00365 mg/L, newFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzidinedaily average 0.00006 lb/d, newFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzidinedaily maximum 0.00773 mg/L, newFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzidinedaily maximum 0.00013 lb/d, newFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzo[a]anthracenedaily average 0.0000142 lb/d, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzo[a]anthracenedaily average 0.00085 mg/L, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzo[a]anthracenedaily maximum 0.0018 mg/L, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzo[a]anthracenedaily maximum 0.00003 lb/d, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzo[a]pyrenedaily average 0.000085 mg/L, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzo[a]pyrenedaily average 0.0000142 lb/d, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzo[a]pyrenedaily maximum 0.00018 mg/L, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Benzo[a]pyrenedaily maximum 0.00003 lb/d, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Hexachlorobenzenedaily average 0.0000232 mg/L, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Hexachlorobenzenedaily average 3.9e-7 lb/d, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Hexachlorobenzenedaily maximum 0.0000491 mg/L, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Hexachlorobenzenedaily maximum 8.2e-7 lb/d, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Hexachlorobutadienedaily average 0.00751 mg/L, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Hexachlorobutadienedaily average 0.00013 lb/d, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Hexachlorobutadienedaily maximum 0.00027 lb/d, tighterFeb 1, 2027under 3 values—
METTON AMERICA INCTX0084808TXIndustrial—Hexachlorobutadienedaily maximum 0.0159 mg/L, tighterFeb 1, 2027under 3 values—
FREEPORT LNG DEVELOPMENT LPTX0127566TXIndustrial—Zinc, total [as Zn]daily average 0.255 mg/L, newMar 1, 20270.24 mg/L (10 values)0.941×
FREEPORT LNG DEVELOPMENT LPTX0127566TXIndustrial—Zinc, total [as Zn]daily maximum 0.539 mg/L, newMar 1, 20270.285 mg/L (10 values)0.529×
FREEPORT LNG DEVELOPMENT LPTX0127566TXIndustrial—Thallium, total [as Tl]daily average 0.00031 mg/L, newMar 1, 20270 mg/L (7 values)0×
FREEPORT LNG DEVELOPMENT LPTX0127566TXIndustrial—Thallium, total [as Tl]daily maximum 0.00067 mg/L, newMar 1, 20270 mg/L (7 values)0×
SI GROUP INCTX0087254TXIndustrial.022 MGDBenzo[a]anthracenedaily average 0.0000569 mg/L, tighterMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDBenzo[a]anthracenedaily maximum 0.00012 mg/L, tighterMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDBenzo[a]pyrenedaily average 0.00000569 mg/L, tighterMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDBenzo[a]pyrenedaily maximum 0.000012 mg/L, tighterMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDChrysenedaily average 0.00574 mg/L, newMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDChrysenedaily maximum 0.0121 mg/L, newMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDDi[2-ethylhexyl] phthalate [DEHP]daily average 0.0172 mg/L, newMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 0.0362 mg/L, newMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDHexachlorobenzenedaily average 0.0000015 mg/L, tighterMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDHexachlorobenzenedaily maximum 0.0000033 mg/L, tighterMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDHexachlorobutadienedaily average 0.000501 mg/L, tighterMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDHexachlorobutadienedaily maximum 0.00106 mg/L, tighterMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDHexachloroethanedaily average 0.0053 mg/L, tighterMar 1, 2027under 3 values—
SI GROUP INCTX0087254TXIndustrial.022 MGDHexachloroethanedaily maximum 0.0112 mg/L, tighterMar 1, 2027under 3 values—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily maximum 0.000231 mg/L, newApr 1, 20270.00000356 mg/L (11 values, 3 below detection)0.0154×
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily maximum 0.000231 mg/L, newApr 1, 20270.00000335 mg/L (11 values, 5 below detection)0.0145×
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily average 0.000109 mg/L, newApr 1, 2027under 3 values—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily maximum 0.000231 mg/L, newApr 1, 2027under 3 values—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily average 0.000109 mg/L, newApr 1, 2027under 3 values—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily maximum 0.000231 mg/L, newApr 1, 20270.00000342 mg/L (11 values, 6 below detection)—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily average 0.000109 mg/L, newApr 1, 2027under 3 values—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily maximum 0.000231 mg/L, newApr 1, 2027under 3 values—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily average 0.000109 mg/L, newApr 1, 2027under 3 values—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily average 0.000109 mg/L, newApr 1, 2027under 3 values—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily average 0.000109 mg/L, newApr 1, 2027under 3 values—
DORCHESTER OPERATING COMPANY LLCTX0140153TXIndustrial5.48 MGDTributyltindaily maximum 0.000231 mg/L, newApr 1, 2027under 3 values—
SHERMAN, CITY OFTX0141755TXIndustrial0 MGDCopper, total [as Cu]daily average 0.072 mg/L, newMay 1, 20270.01395 mg/L (4 values)0.194×
SHERMAN, CITY OFTX0141755TXIndustrial0 MGDCopper, total [as Cu]daily maximum 0.151 mg/L, newMay 1, 20270.0162 mg/L (4 values)0.107×
JEFFERSON TERMINAL SOUTH LLCTX0004669TXIndustrial, major—Benzo[a]anthracenedaily average 0.071 lb/d, tighterMay 1, 2027under 3 values—
JEFFERSON TERMINAL SOUTH LLCTX0004669TXIndustrial, major—Benzo[a]anthracenedaily maximum 0.15 lb/d, tighterMay 1, 2027under 3 values—
JEFFERSON TERMINAL SOUTH LLCTX0004669TXIndustrial, major—Benzo[a]pyrenedaily average 0.0071 lb/d, tighterMay 1, 2027under 3 values—
JEFFERSON TERMINAL SOUTH LLCTX0004669TXIndustrial, major—Benzo[a]pyrenedaily maximum 0.015 lb/d, tighterMay 1, 2027under 3 values—
JEFFERSON TERMINAL SOUTH LLCTX0004669TXIndustrial, major—Hexachlorobenzenedaily average 0.002 lb/d, tighterMay 1, 2027under 3 values—
JEFFERSON TERMINAL SOUTH LLCTX0004669TXIndustrial, major—Hexachlorobenzenedaily maximum 0.004 lb/d, tighterMay 1, 2027under 3 values—
T&W WATER SERVICE COMPANYTX0108138TXIndustrial.014 MGDNitrogen, ammonia total [as N]single grab sample 15 mg/L, newJun 1, 20277.1 mg/L (11 values)0.473×
HARRIS CID NO 18TX0132471TXSewage plant, major2.25 MGDBOD, carbonaceous [5 day, 20 C]daily average 5 mg/L, tighterJun 1, 20272.1 mg/L (11 values, 5 below detection)0.42×
T&W WATER SERVICE COMPANYTX0108138TXIndustrial.014 MGDNitrogen, ammonia total [as N]daily average 12 mg/L, newJun 1, 20273.73 mg/L (11 values)0.311×
HARRIS CID NO 18TX0132471TXSewage plant, major2.25 MGDBOD, carbonaceous [5 day, 20 C]daily average 32 lb/d, tighterJun 1, 20278.63 lb/d (11 values, 5 below detection)0.27×
HARRIS CID NO 18TX0132471TXSewage plant, major2.25 MGDNitrogen, ammonia total [as N]daily average 1.8 mg/L, tighterJun 1, 20270.424 mg/L (11 values)0.236×
HARRIS CID NO 18TX0132471TXSewage plant, major2.25 MGDSolids, total suspendeddaily average 5 mg/L, tighterJun 1, 20271.03 mg/L (11 values, 2 below detection)0.206×
HARRIS CID NO 18TX0132471TXSewage plant, major2.25 MGDSolids, total suspendeddaily average 32 lb/d, tighterJun 1, 20273.99 lb/d (11 values, 1 below detection)0.125×
HARRIS CID NO 18TX0132471TXSewage plant, major2.25 MGDNitrogen, ammonia total [as N]daily average 12 lb/d, tighterJun 1, 20271.36 lb/d (11 values)0.113×
HARRIS CID NO 18TX0132471TXSewage plant, major2.25 MGDSolids, total suspendeddaily maximum 20 mg/L, tighterJun 1, 20271.47 mg/L (11 values, 2 below detection)0.0735×
T&W WATER SERVICE COMPANYTX0108138TXIndustrial.014 MGDNitrogen, ammonia total [as N]daily average 1.4 lb/d, newJun 1, 20270.0437 lb/d (11 values)0.0312×
STOLTHAVEN HOUSTON, INC.TX0091855TXIndustrial, major—Zinc, total [as Zn]daily average 0.165 mg/L, tighterJun 1, 20270.005005 mg/L (4 values)0.0303×
STOLTHAVEN HOUSTON, INC.TX0091855TXIndustrial, major—Zinc, total [as Zn]daily maximum 0.35 mg/L, tighterJun 1, 20270.005005 mg/L (4 values)0.0143×
HARRIS CID NO 18TX0132471TXSewage plant, major2.25 MGDBOD, carbonaceous [5 day, 20 C]daily maximum 20 mg/L, tighterJun 1, 20272.4 mg/L (11 values, 6 below detection)—
T&W WATER SERVICE COMPANYTX0108138TXIndustrial.014 MGDBOD, carbonaceous [5 day, 20 C]daily average 20 mg/L, newJun 1, 2027under 3 values—
T&W WATER SERVICE COMPANYTX0108138TXIndustrial.014 MGDBOD, carbonaceous [5 day, 20 C]daily average 2.3 lb/d, newJun 1, 2027under 3 values—
T&W WATER SERVICE COMPANYTX0108138TXIndustrial.014 MGDBOD, carbonaceous [5 day, 20 C]single grab sample 65 mg/L, newJun 1, 2027under 3 values—
ODFJELL TERMINALS (HOUSTON) INCTX0089192TXIndustrial—Zinc, total [as Zn]daily maximum 0.52 mg/L, newJul 1, 20270.296 mg/L (9 values)0.569×
LAPORTE RAIL AND TERMINAL LLCTX0007293TXIndustrial, major—Temperature, water deg. fahrenheitdaily maximum 106 deg F, tighterSep 1, 202797 deg F (11 values)0.915×
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDLead, total [as Pb]daily average 0.0542 mg/L, tighterSep 1, 20270.0005 mg/L (3 values)0.00923×
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDLead, total [as Pb]daily maximum 0.114 mg/L, tighterSep 1, 20270.0006 mg/L (3 values)0.00526×
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDLead, total [as Pb]daily average 0.384 lb/d, tighterSep 1, 20270.0019 lb/d (3 values)0.00495×
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDLead, total [as Pb]daily maximum 0.81 lb/d, tighterSep 1, 20270.003 lb/d (3 values)0.0037×
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDBenzo[a]anthracenedaily average 0.0002 mg/L, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDBenzo[a]anthracenedaily average 0.0013 lb/d, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDBenzo[a]anthracenedaily maximum 0.0027 lb/d, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDBenzo[a]anthracenedaily maximum 0.0004 mg/L, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDBenzo[a]pyrenedaily average 0.0001 lb/d, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDBenzo[a]pyrenedaily average 0.00002 mg/L, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDBenzo[a]pyrenedaily maximum 0.0003 lb/d, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDBenzo[a]pyrenedaily maximum 0.00004 mg/L, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDHexachlorobenzenedaily average 0.000005 mg/L, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDHexachlorobenzenedaily average 0.00004 lb/d, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDHexachlorobenzenedaily maximum 0.00001 mg/L, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDHexachlorobenzenedaily maximum 0.00007 lb/d, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDHexachlorobutadienedaily average 0.0113 lb/d, tighterSep 1, 2027under 3 values—
BRASKEM AMERICA INCTX0074276TXIndustrial, major.622 MGDHexachlorobutadienedaily maximum 0.024 lb/d, tighterSep 1, 2027under 3 values—
JASPER COUNTY WCID NO. 1TX0021300TXSewage plant.41 MGDBOD, carbonaceous [5 day, 20 C]daily average 20 mg/L, tighterOct 1, 202712.25 mg/L (11 values)0.613×
WEATHERFORD US LPTX0089940TXIndustrial.0108 MGDCopper, total [as Cu]daily average 0.0173 mg/L, tighterOct 1, 20270.00684 mg/L (11 values, 1 below detection)0.395×
SHIN-ETSU SILICONES OF AMERICA INCTX0124427TXIndustrial, major.7 MGDNitrogen, ammonia total [as N]daily maximum 24 mg/L, newOct 1, 20279.08 mg/L (11 values)0.378×
WEATHERFORD US LPTX0089940TXIndustrial.0108 MGDCopper, total [as Cu]daily maximum 0.0367 mg/L, tighterOct 1, 20270.00894 mg/L (11 values, 1 below detection)0.244×
JASPER COUNTY WCID NO. 1TX0021300TXSewage plant.41 MGDBOD, carbonaceous [5 day, 20 C]single grab sample 65 mg/L, tighterOct 1, 202715 mg/L (11 values)0.231×
SHIN-ETSU SILICONES OF AMERICA INCTX0124427TXIndustrial, major.7 MGDNitrogen, ammonia total [as N]daily average 12 mg/L, newOct 1, 20272.46 mg/L (11 values)0.205×
SHIN-ETSU SILICONES OF AMERICA INCTX0124427TXIndustrial, major.7 MGDNitrogen, ammonia total [as N]daily maximum 140 lb/d, newOct 1, 202727.73 lb/d (11 values)0.198×
JASPER COUNTY WCID NO. 1TX0021300TXSewage plant.41 MGDBOD, carbonaceous [5 day, 20 C]daily average 68 lb/d, tighterOct 1, 202710.31 lb/d (11 values)0.152×
WEATHERFORD US LPTX0089940TXIndustrial.0108 MGDZinc, total [as Zn]daily average 0.192 mg/L, tighterOct 1, 20270.0232 mg/L (11 values, 1 below detection)0.121×
SHIN-ETSU SILICONES OF AMERICA INCTX0124427TXIndustrial, major.7 MGDNitrogen, ammonia total [as N]daily average 70 lb/d, newOct 1, 20278.05 lb/d (11 values)0.115×
WEATHERFORD US LPTX0089940TXIndustrial.0108 MGDCopper, total [as Cu]daily maximum 0.0033 lb/d, tighterOct 1, 20270.00032 lb/d (11 values)0.097×
WEATHERFORD US LPTX0089940TXIndustrial.0108 MGDCopper, total [as Cu]daily average 0.0016 lb/d, tighterOct 1, 20270.0001217 lb/d (11 values)0.0761×
WEATHERFORD US LPTX0089940TXIndustrial.0108 MGDZinc, total [as Zn]daily maximum 0.408 mg/L, tighterOct 1, 20270.0284 mg/L (11 values, 1 below detection)0.0696×
JASPER COUNTY WCID NO. 1TX0021300TXSewage plant.41 MGDE. colidaily average 126 CFU/100mL, newOct 1, 2027under 3 values—
JASPER COUNTY WCID NO. 1TX0021300TXSewage plant.41 MGDE. colisingle grab sample 399 CFU/100mL, newOct 1, 2027under 3 values—
US SILICA COMPANYTX0001368TXIndustrial—Chromium, hexavalent [as Cr]daily maximum 0.0253 mg/L, tighterOct 1, 2027under 3 values—
US SILICA COMPANYTX0001368TXIndustrial—Copper, total [as Cu]daily maximum 0.0426 mg/L, tighterOct 1, 2027under 3 values—
ECO SERVICES OPERATIONS CORPTX0007072TXIndustrial, major1.44 MGDHexachlorobutadienedaily average 0.06 lb/d, tighterNov 1, 2027under 3 values—
ECO SERVICES OPERATIONS CORPTX0007072TXIndustrial, major1.44 MGDHexachlorobutadienedaily maximum 0.13 lb/d, tighterNov 1, 2027under 3 values—
NORTHWEST AIRPORT MANAGEMENT LPTX0138479TXIndustrial—Zinc, total [as Zn]daily average 0.175 mg/L, newNov 1, 2027under 3 values—
NORTHWEST AIRPORT MANAGEMENT LPTX0138479TXIndustrial—Zinc, total [as Zn]daily maximum 0.372 mg/L, newNov 1, 2027under 3 values—
WYMAN-GORDON FORGINGS LPTX0042129TXIndustrial, major—Aluminum, total [as Al]daily average 0.834 mg/L, newNov 1, 2027under 3 values—
WYMAN-GORDON FORGINGS LPTX0042129TXIndustrial, major—Aluminum, total [as Al]daily maximum 1.77 mg/L, newNov 1, 2027under 3 values—
HARTREE CHANNELVIEW LLCTX0136573TXIndustrial—Cyanide, free [as free]daily average 0.016 mg/L, newDec 1, 20270.013 mg/L (11 values)0.812×
HARTREE CHANNELVIEW LLCTX0136573TXIndustrial—Cyanide, free [as free]daily maximum 0.033 mg/L, newDec 1, 20270.02 mg/L (11 values)0.606×
HARTREE CHANNELVIEW LLCTX0136573TXIndustrial—Cyanide, free [as free]daily average 0.033 lb/d, newDec 1, 20270.008 lb/d (11 values)0.242×
HARTREE CHANNELVIEW LLCTX0136573TXIndustrial—Cyanide, free [as free]daily maximum 0.069 lb/d, newDec 1, 20270.014 lb/d (11 values)0.203×
ENTERPRISE PRODUCTS OPERATING LLCTX0139076TXIndustrial—Zinc, total [as Zn]daily average 0.262 mg/L, newFeb 1, 20280.082 mg/L (11 values)0.313×
ENTERPRISE PRODUCTS OPERATING LLCTX0139076TXIndustrial—Zinc, total [as Zn]daily maximum 0.555 mg/L, newFeb 1, 20280.113 mg/L (11 values)0.204×
CHEVRON PHILLIPS CHEMICAL COMPANY LPTX0003948TXIndustrial, major4 MGDSolids, total dissolveddaily average 1582 mg/L, tighterFeb 1, 2028under 3 values—
CHEVRON PHILLIPS CHEMICAL COMPANY LPTX0003948TXIndustrial, major4 MGDSolids, total dissolveddaily maximum 3348 mg/L, tighterFeb 1, 2028under 3 values—
CHEVRON PHILLIPS CHEMICAL COMPANY LPTX0003948TXIndustrial, major4 MGDSulfate, total [as SO4]daily average 459 mg/L, tighterFeb 1, 2028under 3 values—
CHEVRON PHILLIPS CHEMICAL COMPANY LPTX0003948TXIndustrial, major4 MGDSulfate, total [as SO4]daily maximum 972 mg/L, tighterFeb 1, 2028under 3 values—
TEXAS CITY, CITY OFTX0023949TXSewage plant, major12.4 MGDBOD, carbonaceous [5 day, 20 C]daily average 7 mg/L, tighterAug 1, 20283.7 mg/L (11 values)0.529×
TEXAS CITY, CITY OFTX0023949TXSewage plant, major12.4 MGDBOD, carbonaceous [5 day, 20 C]daily maximum 22 mg/L, tighterAug 1, 20288.5 mg/L (11 values)0.386×
TEXAS CITY, CITY OFTX0023949TXSewage plant, major12.4 MGDBOD, carbonaceous [5 day, 20 C]daily average 724 lb/d, tighterAug 1, 2028211.6 lb/d (11 values)0.292×
TEXAS CITY, CITY OFTX0023949TXSewage plant, major12.4 MGDSolids, total suspendeddaily average 12 mg/L, tighterAug 1, 20282.6 mg/L (11 values)0.217×
CHEVRON PHILLIPS CHEMICAL COMPANY LPTX0007587TXIndustrial0 MGDCyanide, free [as free]daily average 0.016 mg/L, newAug 1, 20280.00225 mg/L (4 values, 1 below detection)0.141×
TEXAS CITY, CITY OFTX0023949TXSewage plant, major12.4 MGDSolids, total suspendeddaily average 1241 lb/d, tighterAug 1, 2028163.3 lb/d (11 values)0.132×
CHEVRON PHILLIPS CHEMICAL COMPANY LPTX0007587TXIndustrial0 MGDCyanide, free [as free]daily maximum 0.033 mg/L, newAug 1, 20280.0026 mg/L (4 values, 1 below detection)0.0788×
CHEVRON PHILLIPS CHEMICAL COMPANY LPTX0007587TXIndustrial0 MGDCyanide, free [as free]daily average 0.0088 mg/L, newAug 1, 2028under 3 values—
CHEVRON PHILLIPS CHEMICAL COMPANY LPTX0007587TXIndustrial0 MGDCyanide, free [as free]daily maximum 0.0185 mg/L, newAug 1, 2028under 3 values—
ACTON MUDTX0102598TXIndustrial2.5 MGDAluminum, total [as Al]daily maximum 1.64 mg/L, newOct 1, 20280.4375 mg/L (12 values)0.267×
ACTON MUDTX0102598TXIndustrial2.5 MGDAluminum, total [as Al]daily average 0.776 mg/L, newOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDBOD, carbonaceous [5 day, 20 C]daily average 5 mg/L, tighterOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDBOD, carbonaceous [5 day, 20 C]daily average 46 lb/d, tighterOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDBOD, carbonaceous [5 day, 20 C]daily maximum 20 mg/L, tighterOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDFlow, in conduit or thru treatment plant2P 3056 gal/min, tighterOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDNitrogen, ammonia total [as N]daily average 18 lb/d, tighterOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDNitrogen, ammonia total [as N]daily average 2 mg/L, tighterOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDPhosphorus, total [as P]daily average 1 mg/L, newOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDPhosphorus, total [as P]daily average 9.2 lb/d, newOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDPhosphorus, total [as P]daily maximum 4 mg/L, newOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDSolids, total suspendeddaily average 5 mg/L, tighterOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDSolids, total suspendeddaily average 46 lb/d, tighterOct 1, 2028under 3 values—
MCGREGOR, CITY OFTX0023914TXSewage plant, major1.1 MGDSolids, total suspendeddaily maximum 20 mg/L, tighterOct 1, 2028under 3 values—
OXY VINYLS LPTX0006335TXIndustrial, major4 MGDCyanide, free [as free]daily average 0.293 lb/d, newNov 1, 20280 lb/d (10 values)0×
OXY VINYLS LPTX0006335TXIndustrial, major4 MGDCyanide, free [as free]daily average 0.00878 mg/L, newNov 1, 20280 mg/L (10 values)0×
OXY VINYLS LPTX0006335TXIndustrial, major4 MGDCyanide, free [as free]daily maximum 0.618 lb/d, newNov 1, 20280 lb/d (10 values)0×
OXY VINYLS LPTX0006335TXIndustrial, major4 MGDCyanide, free [as free]daily maximum 0.0185 mg/L, newNov 1, 20280 mg/L (10 values)0×
ENTERPRISE PRODUCTS OPERATING LLCTX0134077TXIndustrial.02 MGDSolids, total dissolveddaily average 2279 mg/L, newJan 1, 20291740 mg/L (8 values)0.763×
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 2.339 mg/L, newJan 1, 20291.47 mg/L (7 values)0.628×
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 2.216 mg/L, newJan 1, 20290.831 mg/L (7 values)0.375×
ENTERPRISE PRODUCTS OPERATING LLCTX0134077TXIndustrial.02 MGDSolids, total dissolveddaily maximum 4823 mg/L, newJan 1, 20291750 mg/L (11 values)0.363×
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 3.649 mg/L, newJan 1, 20291.3 mg/L (7 values)0.356×
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 1.766 mg/L, newJan 1, 20290.325 mg/L (7 values)0.184×
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 1.766 mg/L, newJan 1, 20290.0755 mg/L (8 values)0.0428×
TIB ZINC CHEMICALS LLCTX0046906TXIndustrial.27 MGDEnterococcidaily average 35 CFU/100mL, newFeb 1, 20294 CFU/100mL (6 values)0.114×
REAGENT CHEMICAL & RESEARCH INCTX0125369TXIndustrial.046 MGDBarium, total [as Ba]daily maximum 2 mg/L, newMar 1, 20290.793 mg/L (3 values)0.397×
REAGENT CHEMICAL & RESEARCH INCTX0125369TXIndustrial.046 MGDChloride [as Cl]daily maximum 1908 mg/L, newMar 1, 2029317 mg/L (3 values)0.166×
REAGENT CHEMICAL & RESEARCH INCTX0125369TXIndustrial.046 MGDSolids, total dissolveddaily maximum 12700 mg/L, newMar 1, 2029750 mg/L (3 values)0.0591×
REAGENT CHEMICAL & RESEARCH INCTX0125369TXIndustrial.046 MGDZinc, total [as Zn]daily maximum 0.509 mg/L, newMar 1, 2029under 3 values—
GREGORY POWER PARTNERS LLCTX0137502TXIndustrial2.11 MGDCopper, total [as Cu]daily maximum 0.0135 mg/L, newJun 1, 20290.01 mg/L (11 values)0.741×
STUDY BUTTE WATER SUPPLY CORPORATIONTX0133183TXIndustrial.2 MGDChloride [as Cl]daily maximum 1664 mg/L, newJun 1, 2029982 mg/L (11 values)0.59×
GREGORY POWER PARTNERS LLCTX0137502TXIndustrial2.11 MGDCopper, total [as Cu]daily average 0.0064 mg/L, newJun 1, 2029under 3 values—
GREGORY POWER PARTNERS LLCTX0137502TXIndustrial2.11 MGDCopper, total [as Cu]daily average 0.049 lb/d, newJun 1, 2029under 3 values—
GREGORY POWER PARTNERS LLCTX0137502TXIndustrial2.11 MGDCopper, total [as Cu]daily maximum 0.103 lb/d, newJun 1, 2029under 3 values—
CHEMICALS INCORPORATEDTX0118427TXIndustrial.39 MGDBOD, carbonaceous [5 day, 20 C]daily average 9 mg/L, tighterJul 1, 20292.7 mg/L (9 values, 2 below detection)0.3×
ET GATHERING & PROCESSING LLCTX0133998TXIndustrial0 MGDNickel, total [as Ni]daily maximum 0.167 mg/L, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDBenzo[a]anthracenedaily average 0.00085 mg/L, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDBenzo[a]anthracenedaily maximum 0.0018 mg/L, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDBenzo[a]pyrenedaily average 0.000085 mg/L, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDBenzo[a]pyrenedaily maximum 0.00018 mg/L, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDHexachlorobenzenedaily average 0.000023 mg/L, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDHexachlorobenzenedaily maximum 0.000049 mg/L, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDHexachlorobutadienedaily average 0.0075 mg/L, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDHexachlorobutadienedaily maximum 0.16 mg/L, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDEnterococcidaily average 35 CFU/100mL, newJul 1, 2029under 3 values—
INEOS ACETYLS CHEMICALS TEXAS CITY INCTX0005762TXIndustrial, major3.24 MGDEnterococcidaily maximum 104 CFU/100mL, newJul 1, 2029under 3 values—
VERNON, CITY OFTX0131792TXSewage plant.108 MGDChromium, hexavalent [as Cr]daily average 0.0234 mg/L, newJul 1, 2029under 3 values—
VERNON, CITY OFTX0131792TXSewage plant.108 MGDChromium, hexavalent [as Cr]daily maximum 0.0495 mg/L, newJul 1, 2029under 3 values—
W & P DEVELOPMENT CORPORATIONTX0053023TXIndustrial, major8 MGDCyanide, free [as free]daily average 0.00878 mg/L, newJul 1, 2029under 3 values—
W & P DEVELOPMENT CORPORATIONTX0053023TXIndustrial, major8 MGDCyanide, free [as free]daily average 0.293 lb/d, newJul 1, 2029under 3 values—
W & P DEVELOPMENT CORPORATIONTX0053023TXIndustrial, major8 MGDCyanide, free [as free]daily maximum 0.618 lb/d, newJul 1, 2029under 3 values—
W & P DEVELOPMENT CORPORATIONTX0053023TXIndustrial, major8 MGDCyanide, free [as free]daily maximum 0.0185 mg/L, newJul 1, 2029under 3 values—
KIRBY INLAND MARINE, LPTX0133604TXIndustrial.0695 MGDCyanide, free [amenable to chlorination]daily maximum 0.0186 mg/L, newAug 1, 20290.0061 mg/L (9 values, 1 below detection)0.328×

The 300 soonest limits are listed, plants already above them first; all 308 are in the JSON at /dmr/data/upcoming.json.

Each limit is one EPA's ICIS-NPDES file holds on the permit's current version with a begin date after today, enforceable and numeric, either on a parameter the outfall was never limited on (new) or lower than the limit in force (tighter). Today's median is the plant's own reported values for the same outfall, statistic and unit between Oct 1, 2025 and Sep 30, 2026, with how many; none is shown where most were below a detection limit. Read the permit before relying on a value.

Sell to these plants? The list for your states every week, with every plant over a limit on your pollutant, as a spreadsheet, by API and by email when a new one appears: ask for the plant list, or write to info@passage-data.com. What a seller gets.

For programs and AI agents: a state's permits with these limits as JSON at /api/v1/permits?state=TX&upcoming=true, narrowed with &facility_type=potw or &min_flow_mgd=1; the whole list at /dmr/data/upcoming.json; or add https://passage-data.com/mcp as a remote MCP server (tool list_permits). Free, no key. llms.txt

From EPA's ECHO data, not the permit document itself: your permit is the final word. All states