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Sewage treatment plant, major discharger, Salt Lake City, Utah. NPDES permit UT0021725, in force until Dec 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 003 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 25 mg/L | all year | 003 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 35 mg/L | all year | 003 |
| BOD, 5-day, 20 deg. C | maximum monthly average | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | maximum weekly average | report only (mg/L) | all year | 003 |
| pH | daily minimum | ≥ 6.5 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | maximum monthly average | ≤ 25 mg/L | all year | 003 |
| Solids, total suspended | maximum weekly average | ≤ 35 mg/L | all year | 003 |
| Solids, total suspended | maximum monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | maximum weekly average | report only (mg/L) | all year | 003 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 16.1 mg/L | Jun–Aug | 003 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 17.8 mg/L | Sep–Nov | 003 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 20.8 mg/L | Jan, Feb, Dec | 003 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 20.7 mg/L | Mar–May | 003 |
| Nitrogen, nitrite total [as N] | maximum monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, nitrate total [as N] | maximum monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | maximum monthly average | report only (mg/L) | all year | 003 |
| Nitrogen, Kjeldahl, total [as N] | maximum monthly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | annual average | ≤ 2.5 mg/L | all year | 003 |
| Phosphorus, total [as P] | maximum monthly average | report only (mg/L) | all year | 003 |
| Phosphorus, total [as P] | maximum monthly average | report only (mg/L) | all year | 003 |
| Phosphate, ortho [as P] | maximum monthly average | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 56 MGD | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | maximum monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Chlorine, total residual | maximum monthly average | report only (mg/L) | all year | 003 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 003 |
| E. coli | maximum monthly average | ≤ 126 #/100mL | all year | 003 |
| E. coli | maximum weekly average | ≤ 158 #/100mL | all year | 003 |
| BOD, 5-day, percent removal | minimum % removal | ≥ 85 % | all year | 003 |
| Solids, suspended percent removal | minimum % removal | ≥ 85 % | all year | 003 |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | Jan, Mar, May, Jul, Sep, Nov | 003 |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | Jan, Mar, May, Jul, Sep, Nov | 003 |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | daily maximum | ≤ 0 pass=0;fail=1 | Feb, Apr, Jun, Aug, Oct, Dec | 003 |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | daily maximum | ≤ 0 pass=0;fail=1 | Feb, Apr, Jun, Aug, Oct, Dec | 003 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | daily maximum | report only (toxic) | Jan, Mar, May, Jul, Sep, Nov | 003 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | daily maximum | report only (toxic) | Jan, Mar, May, Jul, Sep, Nov | 003 |
| TU Static Renewal 7-Day Chronic Pimphales promelas | daily maximum | report only (toxic) | Feb, Apr, Jun, Aug, Oct, Dec | 003 |
| TU Static Renewal 7-Day Chronic Pimphales promelas | daily maximum | report only (toxic) | Feb, Apr, Jun, Aug, Oct, Dec | 003 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 003B |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | all year | 003B |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 25 mg/L | all year | 003B |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 35 mg/L | all year | 003B |
| BOD, 5-day, 20 deg. C | maximum monthly average | report only (mg/L) | all year | 003B |
| BOD, 5-day, 20 deg. C | maximum weekly average | report only (mg/L) | all year | 003B |
| pH | daily minimum | ≥ 6.5 SU | all year | 003B |
| pH | daily maximum | ≤ 9 SU | all year | 003B |
| Solids, total suspended | maximum monthly average | ≤ 25 mg/L | all year | 003B |
| Solids, total suspended | maximum weekly average | ≤ 35 mg/L | all year | 003B |
| Solids, total suspended | maximum monthly average | report only (mg/L) | all year | 003B |
| Solids, total suspended | maximum weekly average | report only (mg/L) | all year | 003B |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 003B |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 16.1 mg/L | Jun–Aug | 003B |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 17.8 mg/L | Sep–Nov | 003B |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 20.8 mg/L | Jan, Feb, Dec | 003B |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 20.7 mg/L | Mar–May | 003B |
| Nitrogen, nitrite total [as N] | maximum monthly average | report only (mg/L) | all year | 003B |
| Nitrogen, nitrate total [as N] | maximum monthly average | report only (mg/L) | all year | 003B |
| Nitrogen, Kjeldahl, total [as N] | maximum monthly average | report only (mg/L) | all year | 003B |
| Nitrogen, Kjeldahl, total [as N] | maximum monthly average | report only (mg/L) | all year | 003B |
| Phosphorus, total [as P] | annual average | ≤ 3 mg/L | all year | 003B |
| Phosphorus, total [as P] | maximum monthly average | report only (mg/L) | all year | 003B |
| Phosphorus, total [as P] | maximum monthly average | report only (mg/L) | all year | 003B |
| Phosphate, ortho [as P] | maximum monthly average | report only (mg/L) | all year | 003B |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 56 MGD | all year | 003B |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003B |
| Flow, in conduit or thru treatment plant | maximum monthly average | report only (MGD) | all year | 003B |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003B |
| Chlorine, total residual | maximum monthly average | report only (mg/L) | all year | 003B |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 003B |
| E. coli | maximum monthly average | ≤ 126 #/100mL | all year | 003B |
| E. coli | maximum weekly average | ≤ 158 #/100mL | all year | 003B |
| Organics, total toxic [TTO] | 6-month average | report only (mg/L) | all year | 003B |
| Organics, total toxic [TTO] | 6-month average | report only (mg/L) | all year | 003B |
| BOD, 5-day, percent removal | minimum % removal | ≥ 85 % | all year | 003B |
| Solids, suspended percent removal | minimum % removal | ≥ 85 % | all year | 003B |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | Jan, Mar, May, Jul, Sep, Nov | 003B |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | daily maximum | ≤ 0 pass=0;fail=1 | Feb, Apr, Jun, Aug, Oct, Dec | 003B |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | daily maximum | report only (toxic) | Jan, Mar, May, Jul, Sep, Nov | 003B |
| TU Static Renewal 7-Day Chronic Pimphales promelas | daily maximum | report only (toxic) | Feb, Apr, Jun, Aug, Oct, Dec | 003B |
| Parameter | New limit | From | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N], maximum monthly average | 5.8 mg/L (Mar–May) | Jan 1, 2028 | tighter | 14 mg/L (3 values) | 2.41× |
| Phosphorus, total [as P], annual average | 2 mg/L | Jan 1, 2027 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 12.8 mg/L (Jun–Aug) | Jan 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 17.7 mg/L (Sep–Nov) | Jan 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 15.1 mg/L (Jan, Feb, Dec) | Jan 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], daily maximum | 15.1 mg/L (Mar–May) | Jan 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], maximum monthly average | 5.4 mg/L (Jun–Aug) | Jan 1, 2028 | tighter | 3.6 mg/L (3 values) | 0.667× |
| Nitrogen, ammonia total [as N], maximum monthly average | 5.9 mg/L (Sep–Nov) | Jan 1, 2028 | tighter | — | — |
| Nitrogen, ammonia total [as N], maximum monthly average | 11.8 mg/L (Jan, Feb, Dec) | Jan 1, 2028 | tighter | 11.4 mg/L (3 values) | 0.966× |
| Phosphorus, total [as P], annual average | 1 mg/L | Jan 1, 2028 | tighter | — | — |
Cited limits by parameter: Utah'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/UT0021725 · MCP: https://passage-data.com/mcp