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Plants facing new discharge limits — by state and pollutant

In Texas, for Aluminum, total [as Al]: 3 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Nov 1, 2027 and Jan 1, 2029 (9 limits); 0 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 11 · IA 3 · TX 3

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
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—
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—
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×
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×

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