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Plants facing new discharge limits — by state and pollutant

In Colorado: 7 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Nov 1, 2026 and Nov 1, 2030 (32 limits); 4 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 · IA 204 · PA 172 · LA 165 · OH 134 · MS 68 · AR 58 · TX 57 · MI 53 · GA 52 · VA 52 · MD 48 · NJ 35 · IN 31 · SC 23 · KS 21 · MN 21 · NY 21 · MO 20 · WV 17 · OR 16 · IL 14 · FL 10 · NE 9 · OK 8 · TN 8 · CO 7 · UT 7 · NM 6 · CA 5 · SD 5 · CT 3 · ID 3 · ME 2 · WI 2 · AL 1 · DC 1 · KY 1 · MT 1 · NH 1 · PR 1 · VT 1 · WA 1

By pollutant: 1,4-Dioxane 2 · Arsenic, total recoverable 2 · Manganese, dissolved [as Mn] 2 · BOD, 5-day, 20 deg. C 1 · Chloride [as Cl] 1 · Chlorine, total residual 1 · E. coli 1 · Fluoride 1 · Iron, dissolved [as Fe] 1 · Iron, total recoverable 1 · Lead, potentially dissolvd 1 · Mercury, total [low level] 1 · Nickel, total recoverable 1 · Nitrogen, ammonia total [as N] 1 · Nitrogen, total [as N] 1 · Nonylphenol 1 · PFAS Sum 1 · Phosphorus, total [as P] 1 · Selenium, potentially dissolvd 1 · Solids, total suspended 1 · Zinc, potentially dissolved 1

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
Climax Molybdenum CompanyCO0000230COIndustrial, major.1 MGDSolids, total suspended30-day average 30 mg/L, newNov 1, 2026100 mg/L (11 values)3.33×
Climax Molybdenum CompanyCO0000230COIndustrial, major.1 MGDSolids, total suspendedmaximum 7-day average 45 mg/L, newNov 1, 2026100 mg/L (11 values)2.22×
Climax Molybdenum CompanyCO0000230COIndustrial, major.1 MGDBOD, 5-day, 20 deg. C30-day average 30 mg/L, newNov 1, 202656 mg/L (11 values)1.87×
Climax Molybdenum CompanyCO0000230COIndustrial, major.1 MGDChlorine, total residualinstantaneous maximum 0.5 mg/L, tighterNov 1, 20260.7 mg/L (11 values, 1 below detection)1.4×
Climax Molybdenum CompanyCO0000230COIndustrial, major.1 MGDBOD, 5-day, 20 deg. Cmaximum 7-day average 45 mg/L, newNov 1, 202656 mg/L (11 values)1.24×
Suncor Energy USA IncCO0001147COIndustrial, major3.66 MGDSelenium, potentially dissolvd30-day average 9 ug/L, tighterMay 1, 202710 ug/L (11 values)1.11×
U.S. General Services AdministrationCO0035033COFederal—1,4-Dioxane30-day average 1 ug/L, newJan 1, 20294.35 ug/L (8 values)4.35×
Federal Highway Administration - Central Federal LandsCO0034860COFederal.043 MGD1,4-Dioxane30-day average 1 ug/L, newJan 1, 20291.2 ug/L (9 values)1.2×
Suncor Energy USA IncCO0001147COIndustrial, major3.66 MGDPFAS Sumdaily maximum 70 ng/L, newMay 1, 202766 ng/L (11 values)0.943×
Suncor Energy USA IncCO0001147COIndustrial, major3.66 MGDSelenium, potentially dissolvddaily maximum 18 ug/L, tighterMay 1, 202714 ug/L (11 values)0.778×
Suncor Energy USA IncCO0001147COIndustrial, major3.66 MGDPFAS Sum30-day average 70 ng/L, newMay 1, 202741 ng/L (11 values)0.586×
Suncor Energy USA IncCO0001147COIndustrial, major3.66 MGDIron, total recoverable30-day average 861 ug/L, tighterMay 1, 2027451 ug/L (11 values)0.524×
Suncor Energy USA IncCO0001147COIndustrial, major3.66 MGDManganese, dissolved [as Mn]30-day average 403 ug/L, tighterMay 1, 202780 ug/L (11 values)0.199×
Suncor Energy USA IncCO0001147COIndustrial, major3.66 MGDIron, dissolved [as Fe]30-day average 314 ug/L, tighterMay 1, 2027200 ug/L (11 values, 7 below detection)—
TMR IncCO0049074COIndustrial—Nitrogen, total [as N]annual median 32 mg/L, newMay 1, 2027under 3 values—
TMR IncCO0049074COIndustrial—Phosphorus, total [as P]annual median 2.7 mg/L, newMay 1, 2027under 3 values—
TMR IncCO0049074COIndustrial—Chloride [as Cl]rolling average 600 mg/L, newMay 1, 2028under 3 values—
TMR IncCO0049074COIndustrial—Fluoriderolling average 5.1 mg/L, newMay 1, 2028under 3 values—
TMR IncCO0049074COIndustrial—Lead, potentially dissolvdrolling average 14 ug/L, newMay 1, 2028under 3 values—
TMR IncCO0049074COIndustrial—Nickel, total recoverablerolling average 238 ug/L, newMay 1, 2028under 3 values—
TMR IncCO0049074COIndustrial—Phosphorus, total [as P]rolling average 0.14 mg/L, newMay 1, 2028under 3 values—
TMR IncCO0049074COIndustrial—Zinc, potentially dissolvedrolling average 586 ug/L, newMay 1, 2028under 3 values—
Climax Molybdenum CompanyCO0000230COIndustrial, major.1 MGDArsenic, total recoverable30-day average 0.02 ug/L, tighterJan 1, 2030under 3 values—
TMR IncCO0049074COIndustrial—Arsenic, total recoverable30-day average 0.32 ug/L, tighterJan 1, 2030under 3 values—
Three Lakes Water and Sanitation DistrictCO0037681COSewage plant, major2 MGDE. coli30-day geometric mean 126 #/100mL, tighterNov 1, 2030106.5 #/100mL (12 values)0.846×
Three Lakes Water and Sanitation DistrictCO0037681COSewage plant, major2 MGDE. colimaximum 7-day geometric mean 262 #/100mL, tighterNov 1, 2030124.5 #/100mL (12 values)0.475×
Aspen Consolidated Sanitation DistrictCO0026387COSewage plant, major3 MGDNonylphenol30-day average 108 ug/L, newNov 1, 2030under 3 values—
Aspen Consolidated Sanitation DistrictCO0026387COSewage plant, major3 MGDNonylphenoldaily maximum 411 ug/L, newNov 1, 2030under 3 values—
Three Lakes Water and Sanitation DistrictCO0037681COSewage plant, major2 MGDManganese, dissolved [as Mn]30-day average 50 ug/L, tighterNov 1, 2030under 3 values—
Three Lakes Water and Sanitation DistrictCO0037681COSewage plant, major2 MGDMercury, total [low level]30-day average 0.01 ug/L, tighterNov 1, 2030under 3 values—
Three Lakes Water and Sanitation DistrictCO0037681COSewage plant, major2 MGDNitrogen, ammonia total [as N]30-day average 5.1 mg/L (Jul), tighterNov 1, 2030under 3 values—
Three Lakes Water and Sanitation DistrictCO0037681COSewage plant, major2 MGDNitrogen, ammonia total [as N]30-day average 5.4 mg/L (Jun), tighterNov 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=CO&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