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Sewerage Systems, major discharger, Elgin, South Carolina. NPDES permit SC0043451 expired Aug 31, 2022; its limits still apply. Last 12 months: over a limit once (last February 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | Solids, total suspended, daily maximum | 30.8 | ≤ 29.6 mg/L | 4% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen demand, ultimate | monthly average | ≤ 3906 lb/d | all year |
| Oxygen demand, ultimate | daily maximum | report only (lb/d) | all year |
| Oxygen, dissolved [DO] | minimum | ≥ 2 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 23 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 46 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 2302 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 4604 lb/d | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 8.5 SU | all year |
| Solids, total suspended | monthly average | ≤ 11.3 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 29.6 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 1131 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 2962 lb/d | all year |
| Oil and grease, hexane extr method | monthly average | ≤ 50.2 mg/L | all year |
| Oil and grease, hexane extr method | daily maximum | ≤ 205 mg/L | all year |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year |
| Oil and grease, hexane extr method | daily maximum | report only (lb/d) | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 6.9 mg/L | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 13.8 mg/L | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 691 lb/d | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1381 lb/d | all year |
| Phosphorus, total [as P] | monthly average | ≤ 3 mg/L | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | ≤ 147 lb/d | all year |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Arsenic, total [as As] | monthly average | ≤ .0199 mg/L | all year |
| Arsenic, total [as As] | daily maximum | ≤ .0993 mg/L | all year |
| Arsenic, total [as As] | monthly average | report only (lb/d) | all year |
| Arsenic, total [as As] | daily maximum | report only (lb/d) | all year |
| Cadmium, total [as Cd] | monthly average | ≤ .163 mg/L | all year |
| Cadmium, total [as Cd] | daily maximum | ≤ .782 mg/L | all year |
| Cadmium, total [as Cd] | monthly average | report only (lb/d) | all year |
| Cadmium, total [as Cd] | daily maximum | report only (lb/d) | all year |
| Chromium, total [as Cr] | monthly average | ≤ .0522 mg/L | all year |
| Chromium, total [as Cr] | daily maximum | ≤ .167 mg/L | all year |
| Chromium, total [as Cr] | monthly average | report only (lb/d) | all year |
| Chromium, total [as Cr] | daily maximum | report only (lb/d) | all year |
| Cobalt, total [as Co] | monthly average | ≤ .0703 mg/L | all year |
| Cobalt, total [as Co] | daily maximum | ≤ .182 mg/L | all year |
| Cobalt, total [as Co] | monthly average | report only (lb/d) | all year |
| Cobalt, total [as Co] | daily maximum | report only (lb/d) | all year |
| Copper, total [as Cu] | monthly average | ≤ .216 mg/L | all year |
| Copper, total [as Cu] | daily maximum | ≤ .659 mg/L | all year |
| Copper, total [as Cu] | monthly average | report only (lb/d) | all year |
| Copper, total [as Cu] | daily maximum | report only (lb/d) | all year |
| Lead, total [as Pb] | monthly average | ≤ .283 mg/L | all year |
| Lead, total [as Pb] | daily maximum | ≤ 1.32 mg/L | all year |
| Lead, total [as Pb] | monthly average | report only (lb/d) | all year |
| Lead, total [as Pb] | daily maximum | report only (lb/d) | all year |
| Nickel, total [as Ni] | monthly average | ≤ .309 mg/L | all year |
| Nickel, total [as Ni] | daily maximum | ≤ .794 mg/L | all year |
| Nickel, total [as Ni] | monthly average | report only (lb/d) | all year |
| Nickel, total [as Ni] | daily maximum | report only (lb/d) | all year |
| Silver, total [as Ag] | monthly average | ≤ .0122 mg/L | all year |
| Silver, total [as Ag] | daily maximum | ≤ .0318 mg/L | all year |
| Silver, total [as Ag] | monthly average | report only (lb/d) | all year |
| Silver, total [as Ag] | daily maximum | report only (lb/d) | all year |
| Vanadium, total [as V] | monthly average | ≤ .0518 mg/L | all year |
| Vanadium, total [as V] | daily maximum | ≤ .0628 mg/L | all year |
| Vanadium, total [as V] | monthly average | report only (lb/d) | all year |
| Vanadium, total [as V] | daily maximum | report only (lb/d) | all year |
| Zinc, total [as Zn] | monthly average | ≤ .252 mg/L | all year |
| Zinc, total [as Zn] | daily maximum | ≤ .657 mg/L | all year |
| Zinc, total [as Zn] | monthly average | report only (lb/d) | all year |
| Zinc, total [as Zn] | daily maximum | report only (lb/d) | all year |
| Antimony, total [as Sb] | monthly average | ≤ .0312 mg/L | all year |
| Antimony, total [as Sb] | daily maximum | ≤ .111 mg/L | all year |
| Antimony, total [as Sb] | monthly average | report only (lb/d) | all year |
| Antimony, total [as Sb] | daily maximum | report only (lb/d) | all year |
| Tin, total [as Sn] | monthly average | ≤ .0367 mg/L | all year |
| Tin, total [as Sn] | daily maximum | ≤ .0955 mg/L | all year |
| Tin, total [as Sn] | monthly average | report only (lb/d) | all year |
| Tin, total [as Sn] | daily maximum | report only (lb/d) | all year |
| Selenium, total [as Se] | monthly average | ≤ .0698 mg/L | all year |
| Selenium, total [as Se] | daily maximum | ≤ .176 mg/L | all year |
| Selenium, total [as Se] | monthly average | report only (lb/d) | all year |
| Selenium, total [as Se] | daily maximum | report only (lb/d) | all year |
| Titanium, total [as Ti] | monthly average | ≤ .00612 mg/L | all year |
| Titanium, total [as Ti] | daily maximum | ≤ .0159 mg/L | all year |
| Titanium, total [as Ti] | monthly average | report only (lb/d) | all year |
| Titanium, total [as Ti] | daily maximum | report only (lb/d) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | ≤ 0 MGD | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Chlorine, total residual | monthly average | ≤ .485 mg/L | all year |
| Chlorine, total residual | daily maximum | ≤ .838 mg/L | all year |
| Chlorine, total residual | monthly average | ≤ 48.6 lb/d | all year |
| Chlorine, total residual | daily maximum | ≤ 83.9 lb/d | all year |
| E. coli | 30-day geometric mean | ≤ 126 MPN/100mL | all year |
| E. coli | daily maximum | ≤ 349 MPN/100mL | all year |
| E. coli | 30-day geometric mean | ≤ 126 MPN/100mL | all year |
| E. coli | daily maximum | ≤ 800 MPN/100mL | all year |
| Mercury, total [as Hg] | monthly average | ≤ .000246 mg/L | all year |
| Mercury, total [as Hg] | daily maximum | ≤ .000641 mg/L | all year |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year |
| Mercury, total [as Hg] | daily maximum | report only (lb/d) | all year |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average | ≤ 25 % | all year |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | ≤ 40 % | all year |
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | all year |
Cited limits by parameter: South Carolina's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/SC0043451 · MCP: https://passage-data.com/mcp