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Plants facing new discharge limits — by state and pollutant

In Texas, for Copper, total [as Cu]: 8 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Nov 1, 2026 and Jun 1, 2029 (22 limits); 1 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 · PA 48 · IA 9 · TX 8 · LA 7 · OK 5 · SC 5 · CT 1 · GA 1 · MN 1

By pollutant: all · 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 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×
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—
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×
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 MGDCopper, total [as Cu]daily average 0.01 mg/L, tighterDec 1, 20260 mg/L (6 values)0×
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 MGDCopper, total [as Cu]daily maximum 0.021 mg/L, tighterDec 1, 20260.01 mg/L (6 values, 5 below detection)—
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×
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×
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×
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×
US SILICA COMPANYTX0001368TXIndustrial—Copper, total [as Cu]daily maximum 0.0426 mg/L, tighterOct 1, 2027under 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×
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—

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