Passage Data · Check a report · Use it from your AI

Plants facing new discharge limits — by state and pollutant

In Pennsylvania, for Mercury, total [as Hg]: 6 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Dec 1, 2026 and Jul 1, 2030 (16 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 6 · LA 5 · IA 2 · MN 2 · NY 2 · SC 2 · MI 1 · TX 1 · UT 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
WOODGRAIN INCPA0209457PAIndustrial.06 MGDMercury, total [as Hg]daily maximum 0.00005 lb/d, newAug 1, 20290.00007 lb/d (9 values, 4 below detection)1.4×
WOODGRAIN INCPA0209457PAIndustrial.06 MGDMercury, total [as Hg]monthly average 0.00003 lb/d, newAug 1, 20290.00004 lb/d (9 values, 4 below detection)1.33×
HOMER CITY GENERATION LPPA0005037PAIndustrial, major20.541 MGDMercury, total [as Hg]daily maximum 23 ng/L, newDec 1, 2026under 3 values—
HOMER CITY GENERATION LPPA0005037PAIndustrial, major20.541 MGDMercury, total [as Hg]monthly average 10 ng/L, newDec 1, 2026under 3 values—
CANONSBURG HOUSTON JT AUTHPA0025941PASewage plant, major14.4 MGDMercury, total [as Hg]monthly average 0.058 ug/L, newFeb 1, 20270.00589 ug/L (9 values, 1 below detection)0.102×
CANONSBURG HOUSTON JT AUTHPA0025941PASewage plant, major14.4 MGDMercury, total [as Hg]daily maximum 0.11 ug/L, newFeb 1, 20270.0109 ug/L (9 values)0.0991×
CANONSBURG HOUSTON JT AUTHPA0025941PASewage plant, major14.4 MGDMercury, total [as Hg]monthly average 0.004 lb/d, newFeb 1, 20270.0002 lb/d (9 values, 1 below detection)0.05×
CANONSBURG HOUSTON JT AUTHPA0025941PASewage plant, major14.4 MGDMercury, total [as Hg]daily maximum 0.007 lb/d, newFeb 1, 20270.0003 lb/d (9 values)0.0429×
TMS INTL LLCPA0253553PAIndustrial.05 MGDMercury, total [as Hg]daily maximum 0.08 ug/L, newSep 1, 20270.2 ug/L (9 values, 8 below detection)—
TMS INTL LLCPA0253553PAIndustrial.05 MGDMercury, total [as Hg]monthly average 0.051 ug/L, newSep 1, 20270.2 ug/L (9 values, 9 below detection)—
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDMercury, total [as Hg]quarterly average 0.051 ug/L, newMar 1, 20280.0441 ug/L (3 values)0.865×
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDMercury, total [as Hg]daily maximum 0.08 ug/L, newMar 1, 20280.0475 ug/L (3 values)0.594×
WOODGRAIN INCPA0209457PAIndustrial.06 MGDMercury, total [as Hg]daily maximum 0.23 ug/L, newAug 1, 20290.2 ug/L (9 values, 5 below detection)—
WOODGRAIN INCPA0209457PAIndustrial.06 MGDMercury, total [as Hg]monthly average 0.2 ug/L, newAug 1, 20290.2 ug/L (9 values, 5 below detection)—
MONTOUR LLCPA0008443PAIndustrial, major2.76 MGDMercury, total [as Hg]daily maximum 788 ug/L, newJul 1, 2030under 3 values—
MONTOUR LLCPA0008443PAIndustrial, major2.76 MGDMercury, total [as Hg]quarterly average 356 ug/L, newJul 1, 2030under 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