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Plants facing new discharge limits — by state and pollutant

In Louisiana, for Chlorine, total residual: 78 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Jan 1, 2027 and Jan 1, 2030 (82 limits); 42 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 · LA 78 · PA 70 · AR 45 · IA 20 · OH 16 · SC 8 · OR 6 · GA 4 · NY 4 · IL 3 · MS 3 · TN 3 · MI 2 · MO 2 · VA 2 · CO 1 · ME 1 · MN 1 · NE 1 · PR 1 · UT 1

By pollutant: all · Nitrogen, ammonia total [as N] 80 · Chlorine, total residual 78 · Copper, total [as Cu] 7 · Zinc, total [as Zn] 7 · Mercury, total [as Hg] 5 · Solids, total dissolved 4 · Solids, total suspended 4 · Nitrogen, ammonia [NH3-N] 3 · BOD, 5-day, 20 deg. C 2 · Cadmium, total [as Cd] 2 · Cyanide, total [as CN] 2 · 1,2-Dichloroethane 1 · 2,3,7,8-Tetrachlorodibenzo-p-dioxin 1 · BOD, carbonaceous [5 day, 20 C] 1 · Carbon tetrachloride 1 · Chromium, hexavalent [as Cr] 1 · Heptachlor 1 · Lead, total [as Pb] 1 · Oil & Grease 1 · Phenolics, total recoverable 1 · Vinyl chloride 1

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
TOWN OF MAURICE - SOUTH WWTPLA0127202LASewage plant—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newJan 1, 20271.05 mg/L (9 values)31.8×
Town of Maurice- Maurice WTPLA0038393LASewage plant.09 MGDChlorine, total residualinstantaneous maximum 0.039 mg/L, newJan 1, 20271.08 mg/L (9 values)27.7×
ARNAUDVILLE, TOWN OFLA0046639LASewage plant.36 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newMar 1, 20270.27 mg/L (9 values)8.18×
NATIONAL WATER INFRASTRUCTURE, LLC - SEVEN OAKS FLEA MARKETLA0122505LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newMay 1, 20275 mg/L (9 values)152×
MAGNOLIA WATER UTILITY OPERATING CO., LLCLA0126136LAIndustrial—Chlorine, total residualinstantaneous maximum 0.044 mg/L, newMay 1, 20275.7 mg/L (9 values)130×
MAGNOLIA WATER UTILITY OPERATING CO., LLCLA0126136LAIndustrial—Chlorine, total residualinstantaneous maximum 0.044 mg/L, newMay 1, 20275.5 mg/L (9 values)125×
Plaquemines Parish Government- Parish Government Complex STPLA0126098LASewage plant.1 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newMay 1, 20273.37 mg/L (9 values)102×
NATIONAL WATER INFRASTRUCTURE, LLC - SEVEN OAKS FLEA MARKETLA0122505LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newMay 1, 20273 mg/L (9 values)90.9×
CITY OF BATON ROUGE/PARISH OF EAST BATON ROUGE- LAKE JOLIE VUE SUBD. #306LA0127754LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newJul 1, 20272.2 mg/L (9 values)66.7×
MAGNOLIA WATER UTILITY OPERATING CO., LLCLA0126225LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newJul 1, 20271.22 mg/L (9 values)37×
TOWN OF PEARL RIVER MUNICIPALLA0075329LASewage plant.33 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newAug 1, 20275.8 mg/L (9 values)176×
WEST BATON ROUGE PARISHLA0068501LASewage plant.3 MGDChlorine, total residualinstantaneous maximum 0.3 mg/L, newAug 1, 20271.62 mg/L (9 values)5.4×
DUSON, TOWN OFLA0055085LASewage plant.215 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20271.25 mg/L (9 values)37.9×
TOWN OF KINDERLA0020605LASewage plant.97 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20270.74 mg/L (9 values)22.4×
MAGNOLIA WATER UTILITY OPERATING CO., LLCLA0073148LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newNov 1, 20271.64 mg/L (9 values)49.7×
MAGNOLIA WATER UTILITY OPERATING CO., LLCLA0124265LAIndustrial—Chlorine, total residualinstantaneous maximum 0.66 mg/L, newNov 1, 20274.6 mg/L (9 values)6.97×
MAGNOLIA WATER UTILITY OPERATING CO., LLCLA0072265LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newJan 1, 20282.2 mg/L (10 values)66.7×
BALL, TOWN OFLA0079545LASewage plant.75 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJan 1, 20280.61 mg/L (9 values)18.5×
NATIONAL WATER INFRASTRUCTURE, LLC - OLE HOMESTEAD/KEYSTONE WWTPLA0126802LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newFeb 1, 20283 mg/L (9 values)90.9×
CITY OF BATON ROUGE/PARISH OF EBR - PLEASANT PARK SUBDIVISION #357LA0127763LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newFeb 1, 20282.2 mg/L (9 values)66.7×
Morse Village of - STPLA0064572LASewage plant.22 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newMay 1, 20288.8 mg/L (9 values)267×
Kentwood Town of - Sewerage Wastewater Treatment FacilityLA0046051LASewage plant.7 MGDChlorine, total residualinstantaneous maximum 0.072 mg/L, newAug 1, 20285.5 mg/L (9 values)76.4×
National Water Infrastructure LLC - Meadow Ridge Subdivision STPLA0124753LAIndustrial.2088 MGDChlorine, total residualdaily maximum 0.033 mg/L, newOct 1, 20284 mg/L (9 values)121×
Magnolia Water Utility Operating Company LLC - Ile Des CannesLA0074781LAIndustrial.275 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20282.2 mg/L (9 values)66.7×
Magnolia Water Utility Operating Company LLC - Quail Hollow SubdivisionLA0078247LAIndustrial.1236 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20282.2 mg/L (10 values)66.7×
Magnolia Water Utility Operating Company LLC - Sawgrass Subdivision & Sawgrass PLA0126857LAIndustrial.0556 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20282.2 mg/L (10 values)66.7×
National Water Infrastructure LLC - High Plains Crossing WWTPLA0126920LAIndustrial.1104 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20282 mg/L (9 values)60.6×
Iota Town of - WWTPLA0040142LASewage plant.8 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20281.48 mg/L (5 values)44.8×
Dubach Town of - Municipal WWTFLA0063037LASewage plant.1375 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20281.205 mg/L (10 values)36.5×
Magnolia Water Utility Operating Company LLC - Jackson SquareLA0078263LAIndustrial.13484 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newNov 1, 20282.2 mg/L (8 values)66.7×
Grant Parish Police Jury - South Grant Wastewater Treatment PlantLA0127205LASewage plant.255 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newNov 1, 20281.225 mg/L (8 values)37.1×
Southern Pointe Land LLC - Southern Pointe Land Mobile Home ParkLA0127247LAIndustrial.084 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newNov 1, 20281.03 mg/L (7 values)31.2×
Albany Town of - Albany Wastewater Treatment WorksLA0083810LASewage plant.1 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newNov 1, 20280.04 mg/L (6 values)1.21×
Utilities Inc of Louisiana - Quail Ridge Wastewater Treatment PlantLA0065731LAIndustrial.075 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJan 1, 20293.05 mg/L (8 values)92.4×
Port Barre Town of - WWTPLA0020419LASewage plant.5 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJan 1, 20291.015 mg/L (6 values)30.8×
Sunset Town of - WWTPLA0038628LASewage plant.36 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJan 1, 20290.22 mg/L (6 values)6.67×
Jackson Town of - Municipal Sewage Treatment FacilityLA0078816LASewage plant.439 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJan 1, 20290.205 mg/L (6 values)6.21×
Iowa Town of SD #1LA0043605LASewage plant.5 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newFeb 1, 20292.97 mg/L (5 values)90×
Washington Town of - STPLA0062928LASewage plant.15 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newFeb 1, 20291.05 mg/L (4 values)31.8×
National Water Infrastructure LLC - Bayou Grand Wastewater Treatment PlantLA0078557LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newMar 1, 20293 mg/L (4 values)90.9×
LADPSC - Raymond Laborde Correctional CenterLA0083801LASewage plant.3252 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newMar 1, 20292.565 mg/L (4 values)77.7×
Chatham Town of - Wastewater Treatment FacilityLA0049905LASewage plant.1 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newApr 1, 20291 mg/L (3 values)30.3×
Caddo Parish Sewerage District #2LA0020320LASewage plant.25 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newMay 1, 20292.42 mg/L (3 values)73.3×
Coushatta Town of - WWTPLA0033243LASewage plant—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newJan 1, 20300.08 mg/L (7 values)2.42×
NATIONAL WATER INFRASTRUCTURE, LLC - RENAISSANCE SUBDIVISIONLA0127178LAIndustrial—Chlorine, total residualdaily maximum 0.033 mg/L, newJan 15, 2027under 3 values—
TOWN OF LOGANSPORTLA0033308LASewage plant.4 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newApr 1, 20270 mg/L (10 values)0×
TOWN OF MANGHAMLA0032115LASewage plant.0643 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newMay 1, 20270.03 mg/L (10 values)0.909×
L&R UTILITIES INC-SOUTHERN PINES STPLA0127349LAIndustrial—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newSep 1, 20270.03 mg/L (9 values)0.909×
COTTON VALLEY, TOWN OFLA0020401LASewage plant.15 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20270 mg/L (9 values)0×
LA DEPT OF PUBLIC SAFETY & CORRECTIONSLA0051161LASewage plant—Chlorine, total residualdaily maximum 0.033 mg/L, newOct 1, 2027under 3 values—
Town of Clinton- Wastewater Treatment FacilityLA0048445LASewage plant.281 MGDChlorine, total residualinstantaneous maximum 0.046 mg/L, newOct 1, 2027under 3 values—
WASHINGTON PARISH GOVERNMENTLA0068101LASewage plant—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 20270.1 mg/L (8 values, 4 below detection)—
St Tammany Parish Government Department of Utilities- Goodbee Regional WWTPLA0123269LASewage plant.7 MGDChlorine, total residualinstantaneous maximum 0.003 mg/L, newOct 1, 20280 mg/L (8 values)0×
Clarks Town of - Town of Clarks/Grayson Wastewater Treatment FacilityLA0082210LASewage plant.243 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 2028under 3 values—
Ferriday Town of - Town of Ferriday WWTPLA0020630LASewage plant, major.8 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 2028under 3 values—
Gibsland Town of - WWTPLA0053261LASewage plant.15 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newNov 1, 2028under 3 values—
Mansfield City of - Mansfield Sewage Treatment FacilityLA0038962LASewage plant.75 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newDec 1, 2028under 3 values—
Newellton Town of - Town of Newellton WWTPLA0020095LASewage plant.72 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newDec 1, 2028under 3 values—
Zwolle Town of - Municipal Wastewater FacilityLA0020354LASewage plant.8 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newMar 1, 2029under 3 values—
Town of Baldwin - WWTPLA0033294LASewage plant—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newJun 1, 2029under 3 values—
Greenwood Town of - STPLA0093611LASewage plant.45 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJun 2, 2029under 3 values—
Carencro City of - Carencro Wastewater Treatment PlantLA0020150LASewage plant.5 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJul 1, 2029under 3 values—
LADPS - Rayburn Correctional CenterLA0060275LASewage plant.25 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJul 1, 2029under 3 values—
LADPSC - Allen Correctional CenterLA0101907LASewage plant.32 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJul 1, 2029under 3 values—
Morgan City City of - City of Morgan City Wastewater Treatment PlantLA0065986LASewage plant, major4.5 MGDChlorine, total residualinstantaneous maximum 0.25 mg/L, newJul 1, 2029under 3 values—
Magnolia Water Utility Operating Company LLC - Country Lakes Subdivision Phases LA0124524LAIndustrial.1848 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newAug 1, 2029under 3 values—
Magnolia Water Utility Operating Company LLC - Country Lakes Subdivision Phases LA0124524LAIndustrial.1848 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newAug 1, 2029under 3 values—
Magnolia Water Utility Operating Company LLC - Country Lakes Subdivision Phases LA0124524LAIndustrial.1848 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newAug 1, 2029under 3 values—
Oil City Town of - WWTPLA0020508LASewage plant.27 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newAug 1, 2029under 3 values—
Roseland Town of - WWTPLA0100790LASewage plant.2 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newAug 1, 2029under 3 values—
Sycamore Point-Wampold, LLC - Sycamore Point & Timber Ridge ApartmentsLA0071757LAIndustrial.2 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newAug 1, 2029under 3 values—
Vivian Town of - WWTPLA0020061LASewage plant.9 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newAug 1, 2029under 3 values—
Bernice Town of - STPLA0034568LASewage plant603 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newSep 1, 2029under 3 values—
Mansura Town of - Wastewater Treatment FacilityLA0042552LASewage plant.6 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newSep 1, 2029under 3 values—
Opelousas City of - South Opelousas WWTPLA0127469LASewage plant.3 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newSep 1, 2029under 3 values—
ST. TAMMANY PARISH GOVT -TAMMANY UTILITIESLA0124214LASewage plant.18 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newSep 30, 2029under 3 values—
Franklin Parish Sheriff's Department - Franklin Parish Detention Center WWTPLA0122823LASewage plant.131 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 2029under 3 values—
Gueydan Town of - Gueydan Sewage Treatment PlantLA0049883LASewage plant.37 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 2029under 3 values—
Jonesboro Town of - East Oxidation PondLA0038539LASewage plant—Chlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 2029under 3 values—
Kaplan City of - Kaplan Wastewater Treatment PlantLA0122165LASewage plant.9 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 2029under 3 values—
Wisner Town of - Wisner Sewer Treatment PlantLA0038644LASewage plant.499 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newOct 1, 2029under 3 values—
Greater Ouachita Water Co - Indian Lakes Subdivision STPLA0105163LAIndustrial.18 MGDChlorine, total residualinstantaneous maximum 0.033 mg/L, newJan 1, 20300.03 mg/L (6 values)0.909×

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=LA&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