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Plants facing new discharge limits — by state and pollutant

In Minnesota, for Phosphorus, total [as P]: 9 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Nov 1, 2026 and Jan 1, 2031 (13 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 · GA 31 · OH 12 · MN 9 · MI 7 · NJ 7 · IL 6 · IN 6 · AR 4 · PA 4 · SC 3 · ID 2 · MD 2 · MS 2 · NY 2 · TX 2 · UT 2 · CO 1 · NH 1 · OR 1 · VA 1 · VT 1

By pollutant: all · Phosphorus, total [as P] 9 · Chloride [as Cl] 4 · Solids, total suspended 4 · Sulfate, total [as SO4] 4 · BOD, carbonaceous [5 day, 20 C] 3 · Mercury, total [as Hg] 2 · Nitrogen, ammonia total [as N] 2 · pH 2 · Chlorine, total residual 1 · Coliform, fecal MPN + membrane ftl 44.5 C 1 · Copper, total [as Cu] 1 · Flow, in conduit or thru treatment plant 1 · Nitrogen, total [as N] 1 · Perfluorobutanesulfonic acid (PFBS) 1 · Perfluorobutanoic acid (PFBA) 1 · Perfluorohexanesulfonic acid (PFHxS) 1 · Perfluorooctanesulfonic acid (PFOS) 1 · Perfluorooctanoic acid (PFOA) 1 · Solids, total dissolved 1 · Zinc, total [as Zn] 1

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
Mazeppa city ofMN0046752MNSewage plant.083 MGDPhosphorus, total [as P]monthly average 1 mg/L, newApr 1, 20285.05 mg/L (12 values)5.05×
Mazeppa city ofMN0046752MNSewage plant.083 MGDPhosphorus, total [as P]monthly average 0.32 kg/d, newApr 1, 20280.93 kg/d (11 values)2.91×
Austin city ofMN0022683MNSewage plant, major8.475 MGDPhosphorus, total [as P]monthly average 1 mg/L (May–Sep), newNov 1, 20260.78 mg/L (4 values)0.78×
Aitkin Agri-Peat IncMN0055662MNIndustrial15.6 MGDPhosphorus, total [as P]monthly average 1 mg/L, newJan 1, 2027under 3 values—
Appleton city ofMN0021890MNSewage plant.44 MGDPhosphorus, total [as P]annual total 608 kg/yr, newFeb 1, 2027under 3 values—
Minn-Dak Farmers CooperativeMN0070386MNIndustrial2.994 MGDPhosphorus, total [as P]monthly average 0.22 kg/d (Jun–Sep), tighterJul 1, 2027under 3 values—
St Louis County Schools - ISD 2142MN0069850MNIndustrial.008 MGDPhosphorus, total [as P]annual total 44 kg/yr, newDec 1, 2027under 3 values—
Agropur, Inc.MN0060216MNIndustrial.279 MGDPhosphorus, total [as P]annual total 66 kg/yr, newOct 1, 2028under 3 values—
Alexandria Lake Area Sanitary DistrictMN0040738MNSewage plant, major4.7 MGDPhosphorus, total [as P]annual total 665 kg/yr, tighterJun 1, 2030559.5 kg/yr (11 values)0.841×
Alexandria Lake Area Sanitary DistrictMN0040738MNSewage plant, major4.7 MGDPhosphorus, total [as P]monthly average 0.157 mg/L, tighterJun 1, 20300.11 mg/L (11 values)0.701×
Alexandria Lake Area Sanitary DistrictMN0040738MNSewage plant, major4.7 MGDPhosphorus, total [as P]annual total 665 kg/yr, tighterJul 1, 2030559.5 kg/yr (11 values)0.841×
Alexandria Lake Area Sanitary DistrictMN0040738MNSewage plant, major4.7 MGDPhosphorus, total [as P]monthly average 0.157 mg/L, tighterJul 1, 20300.11 mg/L (11 values)0.701×
Murdock city ofMN0052990MNSewage plant.043 MGDPhosphorus, total [as P]YA 119 kg/yr, tighterJan 1, 2031under 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=MN&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