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Plants facing new discharge limits — by state and pollutant

for Nitrogen, total [as N]: 28 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Dec 1, 2026 and Oct 1, 2030 (72 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: GA 12 · FL 3 · PA 3 · MD 2 · MS 2 · CO 1 · IL 1 · MN 1 · MO 1 · MT 1 · SC 1

By pollutant: all · Nitrogen, ammonia total [as N] 526 · Chlorine, total residual 272 · Phosphorus, total [as P] 106 · E. coli 103 · Copper, total [as Cu] 85 · Copper, total recoverable 63 · Solids, total suspended 60 · Chloride [as Cl] 56 · BOD, carbonaceous [5 day, 20 C] 48 · Zinc, total [as Zn] 39 · Zinc, total recoverable 36 · BOD, 5-day, 20 deg. C 35 · pH 31 · Cyanide, free available 30 · Nitrogen, total [as N] 28 · Iron, total [as Fe] 22 · Mercury, total [as Hg] 22 · Toxicity [acute], Ceriodaphnia dubia 22 · Toxicity [acute], Pimephales promelas [Fathead Minnow] 21 · Selenium, total [as Se] 20 · Di[2-ethylhexyl] phthalate [DEHP] 19 · E. coli, MTEC-MF 19 · Mercury, total low level 19 · Toxicity [chronic], Ceriodaphnia dubia 18 · Toxicity [chronic], Pimephales promelas [Fathead Minnow] 18

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
Ashburn, City ofGA0025852GASewage plant, major1.16 MGDNitrogen, total [as N]monthly average 10 mg/L, newMay 1, 202810.43 mg/L (11 values)1.04×
City of ThomasvilleGA0024082GASewage plant, major6.5 MGDNitrogen, total [as N]monthly average 8 mg/L, newDec 1, 202817 mg/L (11 values)2.12×
BRADFORD SANI AUTH MCKEAN CNTYPA0026379PASewage plant, major8.8 MGDNitrogen, total [as N]monthly average 5 mg/L, newApr 1, 20296.54 mg/L (3 values)1.31×
Town of HancockMD0024562MDSewage plant.38 MGDNitrogen, total [as N]annual maximum 6469 lb/yr, newOct 1, 20307025 lb/yr (12 values)1.09×
Folkston, City ofGA0027189GASewage plant.28 MGDNitrogen, total [as N]monthly average 7.5 mg/L, newDec 1, 2026under 3 values—
Folkston, City ofGA0027189GASewage plant.28 MGDNitrogen, total [as N]monthly average 17.5 lb/d, newDec 1, 2026under 3 values—
Folkston, City ofGA0027189GASewage plant.28 MGDNitrogen, total [as N]weekly average 21.9 lb/d, newDec 1, 2026under 3 values—
Folkston, City ofGA0027189GASewage plant.28 MGDNitrogen, total [as N]weekly average 11.3 mg/L, newDec 1, 2026under 3 values—
PALISADES SCH DISTPA0029530PAIndustrial.022 MGDNitrogen, total [as N]monthly average 10 mg/L, newJan 1, 20273.84 mg/L (9 values)0.384×
EMPIRE REALTY HOMES LLCPA0255416PAIndustrial.035 MGDNitrogen, total [as N]annual average 5 mg/L, newJan 31, 2027under 3 values—
EMPIRE REALTY HOMES LLCPA0255416PAIndustrial.035 MGDNitrogen, total [as N]instantaneous maximum 10 mg/L, newJan 31, 2027under 3 values—
Donald LedfordSC0046892SCSewage plant, major7.5 MGDNitrogen, total [as N]monthly average 47031 lb/d, newFeb 1, 2027under 3 values—
Donald LedfordSC0046892SCSewage plant, major7.5 MGDNitrogen, total [as N]monthly average 470313 lb/d, newFeb 1, 2027under 3 values—
Chatham Water Utility, LLCGA0030104GAIndustrial.1 MGDNitrogen, total [as N]monthly average 20 mg/L, newMay 1, 202715 mg/L (10 values)0.75×
City of SparksGA0021563GASewage plant.5 MGDNitrogen, total [as N]monthly average 20 mg/L, newMay 1, 20279.2 mg/L (9 values)0.46×
TMR IncCO0049074COIndustrial—Nitrogen, total [as N]annual median 32 mg/L, newMay 1, 2027under 3 values—
Chatham Water Utility, LLCGA0030104GAIndustrial.1 MGDNitrogen, total [as N]daily maximum 30 mg/L, newMay 1, 2027under 3 values—
City of SparksGA0021563GASewage plant.5 MGDNitrogen, total [as N]monthly average 83 lb/d, newMay 1, 2027under 3 values—
City of SparksGA0021563GASewage plant.5 MGDNitrogen, total [as N]weekly average 104 lb/d, newMay 1, 2027under 3 values—
City of SparksGA0021563GASewage plant.5 MGDNitrogen, total [as N]weekly average 30 mg/L, newMay 1, 2027under 3 values—
Georgia Sheriffs' Boys RanchGA0047228GAIndustrial.025 MGDNitrogen, total [as N]daily maximum 30 mg/L, newMay 1, 2027under 3 values—
Georgia Sheriffs' Boys RanchGA0047228GAIndustrial.025 MGDNitrogen, total [as N]monthly average 20 mg/L, newMay 1, 2027under 3 values—
Daniel GarciaGA0034738GAIndustrial.015 MGDNitrogen, total [as N]daily maximum 30 mg/L, newJun 1, 2027under 3 values—
Daniel GarciaGA0034738GAIndustrial.015 MGDNitrogen, total [as N]monthly average 20 mg/L, newJun 1, 2027under 3 values—
City of Fernandina BeachFL0027260FLSewage plant, major3.5 MGDNitrogen, total [as N]annual total 67549 lb/yr, tighterJul 1, 202723920 lb/yr (11 values)0.354×
STILLWATER MINING COMPANY MT0026808MTIndustrial—Nitrogen, total [as N]monthly average 10.8 lb/d, newSep 1, 20271.96 lb/d (10 values)0.181×
Decatur County Industrial AirparkGA0033511GASewage plant, major1.5 MGDNitrogen, total [as N]monthly average 20 mg/L, newOct 1, 20274.17 mg/L (11 values)0.208×
Decatur County Industrial AirparkGA0033511GASewage plant, major1.5 MGDNitrogen, total [as N]monthly average 250 lb/d, newOct 1, 2027under 3 values—
Decatur County Industrial AirparkGA0033511GASewage plant, major1.5 MGDNitrogen, total [as N]weekly average 313 lb/d, newOct 1, 2027under 3 values—
Decatur County Industrial AirparkGA0033511GASewage plant, major1.5 MGDNitrogen, total [as N]weekly average 30 mg/L, newOct 1, 2027under 3 values—
LOUISE POTWMS0044512MSSewage plant.043 MGDNitrogen, total [as N]maximum monthly average 4.13 lb/d, newOct 28, 2027under 3 values—
LOUISE POTWMS0044512MSSewage plant.043 MGDNitrogen, total [as N]maximum weekly average 6.19 lb/d, newOct 28, 2027under 3 values—
City of KirksvilleMO0049506MOSewage plant, major—Nitrogen, total [as N]annual total 170652 lb/yr, newNov 1, 2027under 3 values—
Folkston, City ofGA0027189GASewage plant.28 MGDNitrogen, total [as N]rolling average 6 mg/L, newDec 1, 2027under 3 values—
SWAN POINTMD0057525MDIndustrial—Nitrogen, total [as N]weekly maximum 9 mg/L, tighterJan 1, 20287.12 mg/L (11 values)0.791×
SWAN POINTMD0057525MDIndustrial—Nitrogen, total [as N]maximum monthly average 6 mg/L, tighterJan 1, 20283.84 mg/L (11 values)0.64×
SWAN POINTMD0057525MDIndustrial—Nitrogen, total [as N]weekly maximum 22.5 lb/d, tighterJan 1, 20282.33 lb/d (11 values)0.104×
SWAN POINTMD0057525MDIndustrial—Nitrogen, total [as N]maximum monthly average 15 lb/d, tighterJan 1, 20281.45 lb/d (11 values)0.0967×
Palmetto, City ofFL0020401FLSewage plant, major2.4 MGDNitrogen, total [as N]annual average 3 mg/L, tighterJan 1, 2028under 3 values—
Palmetto, City ofFL0020401FLSewage plant, major2.4 MGDNitrogen, total [as N]maximum 6 mg/L, tighterJan 1, 2028under 3 values—
Palmetto, City ofFL0020401FLSewage plant, major2.4 MGDNitrogen, total [as N]monthly average 3.75 mg/L, tighterJan 1, 2028under 3 values—
DUNCAN POTWMS0042234MSSewage plant.053 MGDNitrogen, total [as N]maximum monthly average 4.95 lb/d, newMar 28, 2028under 3 values—
DUNCAN POTWMS0042234MSSewage plant.053 MGDNitrogen, total [as N]maximum weekly average 7.42 lb/d, newMar 28, 2028under 3 values—
Ashburn, City ofGA0025852GASewage plant, major1.16 MGDNitrogen, total [as N]monthly average 97 lb/d, newMay 1, 2028under 3 values—
Ashburn, City ofGA0025852GASewage plant, major1.16 MGDNitrogen, total [as N]weekly average 15 mg/L, newMay 1, 2028under 3 values—
Ashburn, City ofGA0025852GASewage plant, major1.16 MGDNitrogen, total [as N]weekly average 121 lb/d, newMay 1, 2028under 3 values—
Town of OchlockneeGA0046370GASewage plant.05 MGDNitrogen, total [as N]monthly average 20 mg/L, newNov 1, 20283.9 mg/L (11 values, 6 below detection)—
Town of OchlockneeGA0046370GASewage plant.05 MGDNitrogen, total [as N]monthly average 8.3 lb/d, newNov 1, 2028under 3 values—
Town of OchlockneeGA0046370GASewage plant.05 MGDNitrogen, total [as N]weekly average 10.4 lb/d, newNov 1, 2028under 3 values—
Town of OchlockneeGA0046370GASewage plant.05 MGDNitrogen, total [as N]weekly average 30 mg/L, newNov 1, 20283.9 mg/L (11 values, 6 below detection)—
City of ThomasvilleGA0024082GASewage plant, major6.5 MGDNitrogen, total [as N]monthly average 271 lb/d, newDec 1, 2028under 3 values—
City of ThomasvilleGA0024082GASewage plant, major6.5 MGDNitrogen, total [as N]weekly average 339 lb/d, newDec 1, 2028under 3 values—
City of ThomasvilleGA0024082GASewage plant, major6.5 MGDNitrogen, total [as N]weekly average 12 mg/L, newDec 1, 2028under 3 values—
City of TiftonGA0048470GASewage plant, major8 MGDNitrogen, total [as N]monthly average 10 mg/L, newFeb 1, 20294.1 mg/L (7 values)0.41×
City of TiftonGA0048470GASewage plant, major8 MGDNitrogen, total [as N]monthly average 667 lb/d, newFeb 1, 2029under 3 values—
City of TiftonGA0048470GASewage plant, major8 MGDNitrogen, total [as N]weekly average 834 lb/d, newFeb 1, 2029under 3 values—
City of TiftonGA0048470GASewage plant, major8 MGDNitrogen, total [as N]weekly average 15 mg/L, newFeb 1, 2029under 3 values—
City of HahiraGA0037974GASewage plant.174 MGDNitrogen, total [as N]monthly average 46 lb/d (Jan, Feb, Mar, Apr, Nov, Dec), newJul 1, 2029under 3 values—
City of HahiraGA0037974GASewage plant.174 MGDNitrogen, total [as N]monthly average 20 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), newJul 1, 2029under 3 values—
City of HahiraGA0037974GASewage plant.174 MGDNitrogen, total [as N]weekly average 57 lb/d (Jan, Feb, Mar, Apr, Nov, Dec), newJul 1, 2029under 3 values—
City of HahiraGA0037974GASewage plant.174 MGDNitrogen, total [as N]weekly average 30 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), newJul 1, 2029under 3 values—
Town of AlapahaGA0033596GASewage plant.1 MGDNitrogen, total [as N]monthly average 20 mg/L, newAug 1, 2029under 3 values—
Town of AlapahaGA0033596GASewage plant.1 MGDNitrogen, total [as N]monthly average 17 lb/d, newAug 1, 2029under 3 values—
Town of AlapahaGA0033596GASewage plant.1 MGDNitrogen, total [as N]weekly average 21 lb/d, newAug 1, 2029under 3 values—
Town of AlapahaGA0033596GASewage plant.1 MGDNitrogen, total [as N]weekly average 30 mg/L, newAug 1, 2029under 3 values—
Canton city ofMN0023001MNSewage plant.13 MGDNitrogen, total [as N]monthly average 10 mg/L (Mar, Jun, Sep, Dec), newNov 1, 2029under 3 values—
City of Tampa - Department of Sanitary SewersFL0020940FLSewage plant, major96 MGDNitrogen, total [as N]5-year average 213.6 ton/yr, tighterJan 1, 2030under 3 values—
City of Tampa - Department of Sanitary SewersFL0020940FLSewage plant, major96 MGDNitrogen, total [as N]annual average 3 mg/L, tighterJan 1, 2030under 3 values—
City of Tampa - Department of Sanitary SewersFL0020940FLSewage plant, major96 MGDNitrogen, total [as N]maximum 6 mg/L, tighterJan 1, 2030under 3 values—
City of Tampa - Department of Sanitary SewersFL0020940FLSewage plant, major96 MGDNitrogen, total [as N]monthly average 3.75 mg/L, tighterJan 1, 2030under 3 values—
City of Tampa - Department of Sanitary SewersFL0020940FLSewage plant, major96 MGDNitrogen, total [as N]weekly average 4.5 mg/L, tighterJan 1, 2030under 3 values—
EFFINGHAM, CITY OFIL0028622ILSewage plant, major9 MGDNitrogen, total [as N]geometric mean 0.5 mg/L, newJan 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=OH&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