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Plants facing new discharge limits — by state and pollutant

In Pennsylvania, for Thallium, total [as Tl]: 9 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Dec 1, 2026 and Jan 1, 2029 (36 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 9 · IA 2 · NM 1 · TX 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
SHAWVILLE POWER LLCPA0010031PAIndustrial, major6.89 MGDThallium, total [as Tl]daily maximum 4.34 ug/L, newJul 1, 20276.79 ug/L (8 values, 2 below detection)1.56×
HOMER CITY GENERATION LPPA0005037PAIndustrial, major20.541 MGDThallium, total [as Tl]daily maximum 0.0033 mg/L, newDec 1, 20260.0011 mg/L (9 values, 1 below detection)0.333×
HOMER CITY GENERATION LPPA0005037PAIndustrial, major20.541 MGDThallium, total [as Tl]monthly average 0.0021 mg/L, newDec 1, 20260.00065 mg/L (9 values, 1 below detection)0.31×
MAX ENV TECH INCPA0044326PAIndustrial.227 MGDThallium, total [as Tl]daily maximum 5.82 ug/L, newMar 1, 20270.01 ug/L (9 values, 9 below detection)—
MAX ENV TECH INCPA0044326PAIndustrial.227 MGDThallium, total [as Tl]monthly average 3.73 ug/L, newMar 1, 20270.01 ug/L (9 values, 9 below detection)—
SHAWVILLE POWER LLCPA0010031PAIndustrial, major6.89 MGDThallium, total [as Tl]daily maximum 0.12 lb/d, newJul 1, 20270.0195 lb/d (8 values, 2 below detection)0.163×
SHAWVILLE POWER LLCPA0010031PAIndustrial, major6.89 MGDThallium, total [as Tl]monthly average 2.78 ug/L, newJul 1, 20275.355 ug/L (8 values, 6 below detection)—
SHAWVILLE POWER LLCPA0010031PAIndustrial, major6.89 MGDThallium, total [as Tl]monthly average 0.08 lb/d, newJul 1, 20270.0165 lb/d (8 values, 6 below detection)—
USHHS CDCPA0025844PAFederal.086 MGDThallium, total [as Tl]daily maximum 2 ug/L, newJul 1, 2027under 3 values—
USHHS CDCPA0025844PAFederal.086 MGDThallium, total [as Tl]monthly average 2 ug/L, newJul 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDThallium, total [as Tl]daily maximum 2 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDThallium, total [as Tl]monthly average 2 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDThallium, total [as Tl]daily maximum 2 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDThallium, total [as Tl]monthly average 2 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDThallium, total [as Tl]daily maximum 2 ug/L, newSep 1, 20270.13 ug/L (3 values, 3 below detection)—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDThallium, total [as Tl]monthly average 2 ug/L, newSep 1, 20270.13 ug/L (3 values, 3 below detection)—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDThallium, total [as Tl]daily maximum 2 ug/L, newSep 1, 2027under 3 values—
CURTISS WRIGHT CORPPA0001228PAIndustrial.55 MGDThallium, total [as Tl]monthly average 2 ug/L, newSep 1, 2027under 3 values—
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDThallium, total [as Tl]daily maximum 0.48 ug/L, newMar 1, 20284.99 ug/L (9 values, 9 below detection)—
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDThallium, total [as Tl]monthly average 0.24 ug/L, newMar 1, 20284.99 ug/L (9 values, 9 below detection)—
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDThallium, total [as Tl]daily maximum 0.379 ug/L, newMar 1, 20284.99 ug/L (3 values, 3 below detection)—
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDThallium, total [as Tl]quarterly average 0.243 ug/L, newMar 1, 20284.99 ug/L (3 values, 3 below detection)—
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDThallium, total [as Tl]daily maximum 0.48 ug/L, newMar 1, 20284.99 ug/L (9 values, 9 below detection)—
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDThallium, total [as Tl]monthly average 0.24 ug/L, newMar 1, 20284.99 ug/L (9 values, 9 below detection)—
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDThallium, total [as Tl]daily maximum 0.48 ug/L, newMar 1, 20284.99 ug/L (9 values, 9 below detection)—
LBR ACQUISITION CO LLCPA0027481PAIndustrial, major3.715 MGDThallium, total [as Tl]monthly average 0.24 ug/L, newMar 1, 20284.99 ug/L (9 values, 9 below detection)—
AMBLER BORO MONTGOMERY CNTYPA0026603PASewage plant, major7.7 MGDThallium, total [as Tl]monthly average 2 ug/L, newJul 1, 2028under 3 values—
AMBLER BORO MONTGOMERY CNTYPA0026603PASewage plant, major7.7 MGDThallium, total [as Tl]monthly average 0.125 lb/d, newJul 1, 2028under 3 values—
LEAR CORP PINE GROVEPA0008231PAIndustrial, major2 MGDThallium, total [as Tl]monthly average 0.011 lb/d, newDec 1, 20280.002 lb/d (6 values, 2 below detection)0.182×
LEAR CORP PINE GROVEPA0008231PAIndustrial, major2 MGDThallium, total [as Tl]daily maximum 0.018 lb/d, newDec 1, 20280.002 lb/d (6 values, 2 below detection)0.111×
LEAR CORP PINE GROVEPA0008231PAIndustrial, major2 MGDThallium, total [as Tl]monthly average 1.14 ug/L, newDec 1, 20280.001 ug/L (6 values, 2 below detection)0.000877×
LEAR CORP PINE GROVEPA0008231PAIndustrial, major2 MGDThallium, total [as Tl]daily maximum 1.78 ug/L, newDec 1, 20280.001 ug/L (6 values, 2 below detection)0.000562×
SCHUYLKILL CNTY MUNI AUTHPA0062529PAIndustrial.164 MGDThallium, total [as Tl]monthly average 0.61 ug/L, newJan 1, 20290.2 ug/L (6 values)0.328×
SCHUYLKILL CNTY MUNI AUTHPA0062529PAIndustrial.164 MGDThallium, total [as Tl]monthly average 0.0008 lb/d, newJan 1, 20290.00022 lb/d (6 values)0.275×
SCHUYLKILL CNTY MUNI AUTHPA0062529PAIndustrial.164 MGDThallium, total [as Tl]daily maximum 0.001 lb/d, newJan 1, 20290.000225 lb/d (6 values)0.225×
SCHUYLKILL CNTY MUNI AUTHPA0062529PAIndustrial.164 MGDThallium, total [as Tl]daily maximum 0.95 ug/L, newJan 1, 20290.2 ug/L (6 values)0.211×

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