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Plants facing new discharge limits — by state and pollutant

In Pennsylvania, for Chromium, hexavalent [as Cr]: 2 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Sep 1, 2027 and Jan 1, 2028 (12 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 · TX 3 · PA 2 · IA 1 · LA 1 · SC 1

By pollutant: all · Chlorine, total residual 70 · Copper, total [as Cu] 48 · Nitrogen, ammonia total [as N] 45 · Cyanide, free available 13 · Zinc, total [as Zn] 12 · Aluminum, total [as Al] 11 · Selenium, total [as Se] 10 · Chloroform 9 · Di[2-ethylhexyl] phthalate [DEHP] 9 · Thallium, total [as Tl] 9 · Temperature, water deg. fahrenheit 8 · BOD, carbonaceous [5 day, 20 C] 7 · Dichlorobromomethane 7 · Iron, total [as Fe] 7 · Lead, total [as Pb] 7 · Manganese, total [as Mn] 7 · Solids, total suspended 7 · Arsenic, total [as As] 6 · Mercury, total [as Hg] 6 · Boron, total [as B] 5 · Cadmium, total [as Cd] 4 · Chlorodibromomethane 4 · Iron, dissolved [as Fe] 4 · Phosphorus, total [as P] 4 · Antimony, total [as Sb] 3

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDChromium, hexavalent [as Cr]daily maximum 18.3 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDChromium, hexavalent [as Cr]monthly average 11.7 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDChromium, hexavalent [as Cr]daily maximum 18.85 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDChromium, hexavalent [as Cr]monthly average 12 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDChromium, hexavalent [as Cr]daily maximum 17.5 ug/L, newSep 1, 20270.67 ug/L (3 values, 2 below detection)—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDChromium, hexavalent [as Cr]monthly average 11.2 ug/L, newSep 1, 20270.67 ug/L (3 values, 2 below detection)—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDChromium, hexavalent [as Cr]daily maximum 17.2 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDChromium, hexavalent [as Cr]monthly average 11.1 ug/L, newSep 1, 2027under 3 values—
CONEMAUGH TWP SOMERSET CNTYPA0216399PAIndustrial.643 MGDChromium, hexavalent [as Cr]daily maximum 18.2 ug/L, newJan 1, 2028under 3 values—
CONEMAUGH TWP SOMERSET CNTYPA0216399PAIndustrial.643 MGDChromium, hexavalent [as Cr]monthly average 11.7 ug/L, newJan 1, 2028under 3 values—
CONEMAUGH TWP SOMERSET CNTYPA0216399PAIndustrial.643 MGDChromium, hexavalent [as Cr]daily maximum 53.6 ug/L, newJan 1, 2028under 3 values—
CONEMAUGH TWP SOMERSET CNTYPA0216399PAIndustrial.643 MGDChromium, hexavalent [as Cr]monthly average 34.3 ug/L, newJan 1, 2028under 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=PA&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