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Sewage treatment plant, major discharger, Magna, Utah. NPDES permit UT0021440, in force until Mar 31, 2029. Last 12 months: no values over a limit, 1 of 51 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | minimum | ≥ 5 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 25 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 35 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | maximum monthly average | ≤ 25 mg/L | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 35 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 001 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 7 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30 mg/L | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | 30-day average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | 30-day average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | annual average | ≤ 1 mg/L | all year | 001 |
| Phosphorus, total [as P] | 30-day average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | 30-day average | report only (mg/L) | all year | 001 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 001 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Molybdenum, total [as Mo] | daily maximum | report only (mg/L) | all year | 001 |
| Molybdenum, total [as Mo] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 001 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | Dec | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphate, ortho [as P] | 30-day average | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 4 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | EPA's "DPD MAX" | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | 30-day average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | EPA's "DPD MAX" | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 17.7 mg/L | Jul–Sep | 001 |
| Chlorine, total residual | daily maximum | ≤ 2.7 mg/L | Oct–Dec | 001 |
| Chlorine, total residual | daily maximum | ≤ 1.3 mg/L | Jan–Mar | 001 |
| Chlorine, total residual | daily maximum | ≤ 2.7 mg/L | Apr–Jun | 001 |
| E. coli | maximum monthly average | ≤ 126 #/100mL | all year | 001 |
| E. coli | maximum weekly average | ≤ 157 #/100mL | all year | 001 |
| Nitrogen, nitrate total [as NO3] | 30-day average | report only (mg/L) | all year | 001 |
| Nitrogen, nitrite total [as NO2] | 30-day average | report only (mg/L) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 001 |
| Organics, total toxic [TTO] | value | report only (mg/L) | all year | 001 |
| Organics, total toxic [TTO] | value | report only (mg/L) | all year | 001 |
| BOD, 5-day, percent removal | minimum % removal | ≥ 85 % | all year | 001 |
| Solids, suspended percent removal | minimum % removal | ≥ 85 % | all year | 001 |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | Jan, Feb, Mar, Jul, Aug, Sep | 001 |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | daily maximum | ≤ 0 pass=0;fail=1 | Apr, May, Jun, Oct, Nov, Dec | 001 |
| Flow rate | 30-day average | report only (MGD) | all year | 001R |
| Flow rate | 30-day average | report only (MGD) | all year | 001R |
| Turbidity | maximum daily average | ≤ 2 NTU | all year | 001R |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 10 mg/L | all year | 001R |
| pH | minimum | ≥ 6 SU | all year | 001R |
| pH | maximum | ≤ 9 SU | all year | 001R |
| Chlorine, total residual | minimum | ≥ 1 mg/L | all year | 001R |
| E. coli | 7-day median | ≤ 0 #/100mL | all year | 001R |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 25 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | maximum weekly average | ≤ 35 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | maximum monthly average | ≤ 25 mg/L | all year | 002 |
| Solids, total suspended | maximum weekly average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 002 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | maximum monthly average | ≤ 7 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30 mg/L | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | 30-day average | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | 30-day average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | annual average | ≤ 1 mg/L | all year | 002 |
| Phosphorus, total [as P] | 30-day average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | 30-day average | report only (mg/L) | all year | 002 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 002 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 002 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 002 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 002 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 002 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 002 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 002 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 002 |
| Molybdenum, total [as Mo] | daily maximum | report only (mg/L) | all year | 002 |
| Molybdenum, total [as Mo] | daily maximum | report only (mg/L) | all year | 002 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 002 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 002 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 002 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | Dec | 002 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 002 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 002 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 002 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphate, ortho [as P] | 30-day average | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 4 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | EPA's "DPD MAX" | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | maximum monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | EPA's "DPD MAX" | report only (MGD) | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 2.7 mg/L | Oct–Dec | 002 |
| Chlorine, total residual | daily maximum | ≤ 1.3 mg/L | Jan–Mar | 002 |
| Chlorine, total residual | daily maximum | ≤ 2.7 mg/L | Apr–Jun | 002 |
| Chlorine, total residual | daily maximum | ≤ 17.7 mg/L | Jul–Sep | 002 |
| E. coli | maximum monthly average | ≤ 126 #/100mL | all year | 002 |
| E. coli | maximum weekly average | ≤ 157 #/100mL | all year | 002 |
| Nitrogen, nitrate total [as NO3] | 30-day average | report only (mg/L) | all year | 002 |
| Nitrogen, nitrite total [as NO2] | 30-day average | report only (mg/L) | all year | 002 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 002 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 002 |
| BOD, 5-day, percent removal | minimum % removal | ≥ 85 % | all year | 002 |
| Solids, suspended percent removal | minimum % removal | ≥ 85 % | all year | 002 |
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | Jan, Feb, Mar, Jul, Aug, Sep | 002 |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | daily maximum | ≤ 0 pass=0;fail=1 | Apr, May, Jun, Oct, Nov, Dec | 002 |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | ≤ 0 fail=0;pass=1 | Apr, May, Jun, Oct, Nov, Dec | 002 |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | daily maximum | ≤ 0 fail=0;pass=1 | Jan, Feb, Mar, Jul, Aug, Sep | 002 |
Cited limits by parameter: Utah's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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