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Plants facing new discharge limits — by state and pollutant

In South Carolina, for BOD, 5-day, 20 deg. C: 7 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between May 1, 2028 and Jan 1, 2031 (20 limits); 0 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 7 · MS 7 · SC 7 · NJ 3 · NY 3 · LA 2 · PA 2 · CO 1 · KS 1 · MD 1 · UT 1

By pollutant: all · Chlorine, total residual 8 · Nitrogen, ammonia total [as N] 8 · BOD, 5-day, 20 deg. C 7 · Copper, total [as Cu] 5 · Lead, total [as Pb] 3 · Oxygen demand, ultimate 3 · Phosphorus, total [as P] 3 · Zinc, total [as Zn] 3 · %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia 2 · Cadmium, total [as Cd] 2 · E. coli 2 · Mercury, total [as Hg] 2 · Solids, total suspended 2 · Bis[chloromethyl] ether 1 · BOD, carbonaceous [5 day, 20 C] 1 · Chromium, hexavalent [as Cr] 1 · Flow, in conduit or thru treatment plant 1 · Length of longest pH excursion 1 · Nitrogen, total [as N] 1 · Peracetic Acid 1 · pH 1 · pH range excursions, monthly total accum 1 · Polychlorinated biphenyls [PCBs] 1 · Selenium, total [as Se] 1 · Temp. diff. between up/down stream deg. F 1

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
JACABB UTILITIES LLCSC0000591SCIndustrial.25 MGDBOD, 5-day, 20 deg. Cmonthly average 15 mg/L, tighterMay 1, 20282.8 mg/L (11 values, 4 below detection)0.187×
JACABB UTILITIES LLCSC0000591SCIndustrial.25 MGDBOD, 5-day, 20 deg. Cweekly average 22.5 mg/L, tighterMay 1, 20282.8 mg/L (11 values, 3 below detection)0.124×
HARLEYVILLE TOWN OFSC0038504SCSewage plant.225 MGDBOD, 5-day, 20 deg. Cmonthly average 9.27 mg/L, tighterNov 1, 20282 mg/L (11 values)0.216×
HARLEYVILLE TOWN OFSC0038504SCSewage plant.225 MGDBOD, 5-day, 20 deg. Cweekly average 14 mg/L, tighterNov 1, 20282 mg/L (11 values)0.143×
HARLEYVILLE TOWN OFSC0038504SCSewage plant.225 MGDBOD, 5-day, 20 deg. Cmonthly average 17.4 lb/d, tighterNov 1, 20281.61 lb/d (11 values)0.0925×
HARLEYVILLE TOWN OFSC0038504SCSewage plant.225 MGDBOD, 5-day, 20 deg. Cweekly average 26 lb/d, tighterNov 1, 20282.19 lb/d (11 values)0.0842×
Jeff KaiserSC0030112SCIndustrial.63 MGDBOD, 5-day, 20 deg. Cdaily maximum 87.14 lb/d, tighterDec 1, 20287.61 lb/d (11 values)0.0873×
Jeff KaiserSC0030112SCIndustrial.63 MGDBOD, 5-day, 20 deg. Cmonthly average 43.57 lb/d, tighterDec 1, 20283.26 lb/d (11 values)0.0748×
KERSHAW COUNTYSC0039870SCSewage plant, major2 MGDBOD, 5-day, 20 deg. Cweekly average 25 mg/L, tighterApr 1, 202913.2 mg/L (11 values)0.528×
KERSHAW COUNTYSC0039870SCSewage plant, major2 MGDBOD, 5-day, 20 deg. Cmonthly average 16.6 mg/L, tighterApr 1, 20297.75 mg/L (11 values)0.467×
BERKELEY COUNTY WATER & SANITATION AUTHORITYSC0039764SCSewage plant6 MGDBOD, 5-day, 20 deg. Cmonthly average 15 mg/L, tighterApr 1, 20303 mg/L (11 values)0.2×
BERKELEY COUNTY WATER & SANITATION AUTHORITYSC0039764SCSewage plant6 MGDBOD, 5-day, 20 deg. Cweekly average 23 mg/L, tighterApr 1, 20304 mg/L (11 values)0.174×
Easley Combined UtilitiesSC0039853SCSewage plant, major3.5 MGDBOD, 5-day, 20 deg. Cmonthly average 587 lb/d, newAug 1, 2030under 3 values—
Easley Combined UtilitiesSC0039853SCSewage plant, major3.5 MGDBOD, 5-day, 20 deg. Cmonthly average 16.77 mg/L, newAug 1, 2030under 3 values—
Easley Combined UtilitiesSC0039853SCSewage plant, major3.5 MGDBOD, 5-day, 20 deg. Cweekly average 25.16 mg/L, newAug 1, 2030under 3 values—
Easley Combined UtilitiesSC0039853SCSewage plant, major3.5 MGDBOD, 5-day, 20 deg. Cweekly average 881 lb/d, newAug 1, 2030under 3 values—
Daniel QuattlebaumSC0048313SCSewage plant.95 MGDBOD, 5-day, 20 deg. Cmonthly average 15 mg/L, tighterJan 1, 20312.2 mg/L (11 values)0.147×
Daniel QuattlebaumSC0048313SCSewage plant.95 MGDBOD, 5-day, 20 deg. Cweekly average 22.5 mg/L, tighterJan 1, 20312.5 mg/L (11 values)0.111×
Daniel QuattlebaumSC0048313SCSewage plant.95 MGDBOD, 5-day, 20 deg. Cmonthly average 156 lb/d, tighterJan 1, 20316.3 lb/d (11 values)0.0404×
Daniel QuattlebaumSC0048313SCSewage plant.95 MGDBOD, 5-day, 20 deg. Cweekly average 235 lb/d, tighterJan 1, 20317 lb/d (11 values)0.0298×

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=SC&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