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Apartment Building Operators, Tigerville, South Carolina. NPDES permit SC0026379 expired Aug 31, 2019; its limits still apply. Last 12 months: over a limit 22 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Nitrogen, ammonia total [as N], daily maximum | 23 | ≤ 14.5 mg/L | 59% |
| October 2025 | Nitrogen, ammonia total [as N], daily maximum | 6.8 | ≤ 3.6 lb/d | 89% |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 23 | ≤ 7.2 mg/L | 219% |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 6.8 | ≤ 1.8 lb/d | 278% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 23.9 | ≤ 13.5 mg/L | 77% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 5.2 | ≤ 3.4 lb/d | 53% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 25.9 | ≤ 13.5 mg/L | 92% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 4.1 | ≤ 3.4 lb/d | 21% |
| January 2026 | Nitrogen, ammonia total [as N], daily maximum | 6.99 | ≤ 6.8 lb/d | 3% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 23.7 | ≤ 13.5 mg/L | 76% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 6.99 | ≤ 3.4 lb/d | 106% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 26.3 | ≤ 13.5 mg/L | 95% |
| March 2026 | Chlorine, total residual, monthly average | < .05 | ≤ .035 mg/L | 43% |
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 19.7 | ≤ 14.5 mg/L | 36% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 19.4 | ≤ 7.2 mg/L | 169% |
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 13.3 | ≤ 7.2 mg/L | 85% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 13.9 | ≤ 7.2 mg/L | 93% |
| August 2026 | %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia, daily maximum | 99.5 | ≤ 40 % | 149% |
| August 2026 | %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia, quarterly average | 99.5 | ≤ 25 % | 298% |
| August 2026 | BOD, 5-day, 20 deg. C, monthly average | 32.1 | ≤ 30 mg/L | 7% |
| August 2026 | Nitrogen, ammonia total [as N], daily maximum | 16.8 | ≤ 14.5 mg/L | 16% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | 16.8 | ≤ 7.2 mg/L | 133% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 1 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 60 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 7.5 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 15 lb/d | all year |
| pH | minimum | ≥ 6 SU | all year |
| pH | maximum | ≤ 8.5 SU | all year |
| Solids, total suspended | monthly average | ≤ 90 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 180 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 22.5 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 45 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 7.2 mg/L | Mar–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 13.5 mg/L | Jan, Feb, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.5 mg/L | Mar–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 27 mg/L | Jan, Feb, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.8 lb/d | Mar–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3.4 lb/d | Jan, Feb, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.6 lb/d | Mar–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.8 lb/d | Jan, Feb, Nov, Dec |
| 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 |
| Chlorine, total residual | monthly average | ≤ .035 mg/L | all year |
| Chlorine, total residual | daily maximum | ≤ .06 mg/L | 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 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | quarterly average | ≤ 25 % | all year |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | ≤ 40 % | all year |
| %Mortality 7Day Chronic Ceriodaphnia dubia | quarterly average | report only (%) | all year |
| %Mortality 7Day Chronic Ceriodaphnia dubia | daily maximum | report only (%) | all year |
| %Repro Reduc Static Renewal7D Chronic Ceriodaphnia dubia | quarterly average | report only (%) | all year |
| %Repro Reduc Static Renewal7D Chronic Ceriodaphnia dubia | daily maximum | report only (%) | all year |
Cited limits by parameter: South Carolina's rules and the federal ones.
Same industry: the 27 Real Estate permits in South Carolina.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/SC0026379 · MCP: https://passage-data.com/mcp