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Plants facing new discharge limits — by state and pollutant

In South Carolina, for Selenium, total [as Se]: 1 plant holds a permit with a new or tighter discharge limit already written into it, taking effect between Jan 1, 2028 and Jun 1, 2028 (8 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 · PA 10 · TX 3 · IA 2 · OK 2 · OH 1 · SC 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
BEAUFORT JASPER WATER & SEWER AUTHORITYSC0047279SCSewage plant, major7.5 MGDSelenium, total [as Se]daily maximum 0.02 mg/L, newJan 1, 20280 mg/L (11 values, 1 below detection)0×
BEAUFORT JASPER WATER & SEWER AUTHORITYSC0047279SCSewage plant, major7.5 MGDSelenium, total [as Se]daily maximum 1.5 lb/d, newJan 1, 20280 lb/d (11 values)0×
BEAUFORT JASPER WATER & SEWER AUTHORITYSC0047279SCSewage plant, major7.5 MGDSelenium, total [as Se]monthly average 0.005 mg/L, newJan 1, 20280 mg/L (11 values, 1 below detection)0×
BEAUFORT JASPER WATER & SEWER AUTHORITYSC0047279SCSewage plant, major7.5 MGDSelenium, total [as Se]monthly average 0.38 lb/d, newJan 1, 20280 lb/d (11 values)0×
BEAUFORT JASPER WATER & SEWER AUTHORITYSC0047279SCSewage plant, major7.5 MGDSelenium, total [as Se]daily maximum 1.9 lb/d, newJun 1, 20280 lb/d (11 values)0×
BEAUFORT JASPER WATER & SEWER AUTHORITYSC0047279SCSewage plant, major7.5 MGDSelenium, total [as Se]daily maximum 0.02 mg/L, newJun 1, 20280 mg/L (11 values, 1 below detection)0×
BEAUFORT JASPER WATER & SEWER AUTHORITYSC0047279SCSewage plant, major7.5 MGDSelenium, total [as Se]monthly average 0.47 lb/d, newJun 1, 20280 lb/d (11 values)0×
BEAUFORT JASPER WATER & SEWER AUTHORITYSC0047279SCSewage plant, major7.5 MGDSelenium, total [as Se]monthly average 0.005 mg/L, newJun 1, 20280 mg/L (11 values, 1 below detection)0×

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