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Copper Ores, major discharger, Salt Lake City, Utah. NPDES permit UT0000051, in force until Jun 30, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | maximum monthly average | ≤ 20 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 002 |
| Cyanide, total [as CN] | maximum monthly average | ≤ .0056 mg/L | all year | 002 |
| Cyanide, total [as CN] | daily maximum | ≤ .0241 mg/L | all year | 002 |
| Arsenic, total [as As] | maximum monthly average | ≤ .172 mg/L | all year | 002 |
| Arsenic, total [as As] | daily maximum | ≤ .366 mg/L | all year | 002 |
| Cadmium, total [as Cd] | maximum monthly average | ≤ .00079 mg/L | all year | 002 |
| Cadmium, total [as Cd] | daily maximum | ≤ .008 mg/L | all year | 002 |
| Copper, total [as Cu] | maximum monthly average | ≤ .0351 mg/L | all year | 002 |
| Copper, total [as Cu] | daily maximum | ≤ .0557 mg/L | all year | 002 |
| Lead, total [as Pb] | maximum monthly average | ≤ .0215 mg/L | all year | 002 |
| Lead, total [as Pb] | daily maximum | ≤ .515 mg/L | all year | 002 |
| Zinc, total [as Zn] | maximum monthly average | ≤ .224 mg/L | all year | 002 |
| Zinc, total [as Zn] | daily maximum | ≤ .419 mg/L | all year | 002 |
| Selenium, total [as Se] | maximum monthly average | ≤ .012 mg/L | all year | 002 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 002 |
| Floating solids, waste or visible foam-visual | daily maximum | ≤ 0 N=0;Y=1 | all year | 002 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 50 MGD | all year | 002 |
| Solids, total dissolved | maximum monthly average | report only (mg/L) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 002 |
| Mercury, total [as Hg] | maximum monthly average | ≤ .000013 mg/L | all year | 002 |
| Mercury, total [as Hg] | daily maximum | ≤ .002 mg/L | all year | 002 |
| Oil and grease visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 002 |
| pH | minimum | report only (SU) | all year | 004 |
| pH | maximum | report only (SU) | all year | 004 |
| Solids, total suspended | maximum monthly average | report only (mg/L) | all year | 004 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 004 |
| Arsenic, total [as As] | maximum monthly average | report only (mg/L) | all year | 004 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 004 |
| Cadmium, total [as Cd] | maximum monthly average | report only (mg/L) | all year | 004 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 004 |
| Copper, total [as Cu] | maximum monthly average | report only (mg/L) | all year | 004 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 004 |
| Lead, total [as Pb] | maximum monthly average | report only (mg/L) | all year | 004 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 004 |
| Zinc, total [as Zn] | maximum monthly average | report only (mg/L) | all year | 004 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 004 |
| Selenium, total [as Se] | maximum monthly average | report only (mg/L) | all year | 004 |
| Selenium, total [as Se] | maximum monthly average | report only (mg/L) | all year | 004 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 004 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 004 |
| Selenium, total [as Se] | year-to-date total | ≤ 900 kg/yr | all year | 004 |
| Selenium, total [as Se] | quarterly total | report only (kg/yr) | all year | 004 |
| Floating solids, waste or visible foam-visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 004 |
| Flow, in conduit or thru treatment plant | maximum monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Solids, total dissolved | maximum monthly average | report only (mg/L) | all year | 004 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 004 |
| Mercury, total [as Hg] | maximum monthly average | report only (mg/L) | all year | 004 |
| Mercury, total [as Hg] | daily maximum | report only (mg/L) | all year | 004 |
| Oil and grease visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 004 |
| pH | daily minimum | ≥ 6.5 SU | all year | 007 |
| pH | daily maximum | ≤ 9 SU | all year | 007 |
| Solids, total suspended | maximum monthly average | ≤ 20 mg/L | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 007 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 007 |
| Cyanide, total [as CN] | maximum monthly average | ≤ .0056 mg/L | all year | 007 |
| Cyanide, total [as CN] | daily maximum | ≤ .0291 mg/L | all year | 007 |
| Arsenic, total [as As] | maximum monthly average | ≤ .222 mg/L | all year | 007 |
| Arsenic, total [as As] | daily maximum | ≤ .427 mg/L | all year | 007 |
| Cadmium, total [as Cd] | maximum monthly average | ≤ .00089 mg/L | all year | 007 |
| Cadmium, total [as Cd] | daily maximum | ≤ .0093 mg/L | all year | 007 |
| Copper, total [as Cu] | maximum monthly average | ≤ .0458 mg/L | all year | 007 |
| Copper, total [as Cu] | daily maximum | ≤ .065 mg/L | all year | 007 |
| Lead, total [as Pb] | maximum monthly average | ≤ .0284 mg/L | all year | 007 |
| Lead, total [as Pb] | daily maximum | ≤ .605 mg/L | all year | 007 |
| Zinc, total [as Zn] | maximum monthly average | ≤ .224 mg/L | all year | 007 |
| Zinc, total [as Zn] | daily maximum | ≤ .5 mg/L | all year | 007 |
| Selenium, total [as Se] | maximum monthly average | ≤ .012 mg/L | all year | 007 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 007 |
| Floating solids, waste or visible foam-visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 007 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 15 MGD | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
| Solids, total dissolved | maximum monthly average | report only (mg/L) | all year | 007 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 007 |
| Mercury, total [as Hg] | maximum monthly average | ≤ .000015 mg/L | all year | 007 |
| Mercury, total [as Hg] | daily maximum | ≤ .002 mg/L | all year | 007 |
| Oil and grease visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 007 |
| pH | daily minimum | ≥ 6.5 SU | all year | 008 |
| pH | daily maximum | ≤ 9 SU | all year | 008 |
| Solids, total suspended | maximum monthly average | ≤ 20 mg/L | all year | 008 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 008 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 008 |
| Arsenic, total [as As] | maximum monthly average | ≤ .25 mg/L | all year | 008 |
| Arsenic, total [as As] | daily maximum | ≤ .5 mg/L | all year | 008 |
| Cadmium, total [as Cd] | maximum monthly average | ≤ .05 mg/L | all year | 008 |
| Cadmium, total [as Cd] | daily maximum | ≤ .1 mg/L | all year | 008 |
| Copper, total [as Cu] | maximum monthly average | ≤ .15 mg/L | all year | 008 |
| Copper, total [as Cu] | daily maximum | ≤ .3 mg/L | all year | 008 |
| Lead, total [as Pb] | maximum monthly average | ≤ .3 mg/L | all year | 008 |
| Lead, total [as Pb] | daily maximum | ≤ .6 mg/L | all year | 008 |
| Zinc, total [as Zn] | maximum monthly average | ≤ .224 mg/L | all year | 008 |
| Zinc, total [as Zn] | daily maximum | ≤ .5 mg/L | all year | 008 |
| Selenium, total [as Se] | daily maximum | ≤ .054 mg/L | all year | 008 |
| Selenium, total [as Se] | daily maximum | ≤ .054 mg/L | all year | 008 |
| Selenium, total [as Se] | year-to-date total | ≤ 900 kg/yr | all year | 008 |
| Selenium, total [as Se] | quarterly total | report only (kg/yr) | all year | 008 |
| Floating solids, waste or visible foam-visual | daily maximum | ≤ 0 N=0;Y=1 | all year | 008 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 5.5 MGD | all year | 008 |
| Solids, total dissolved | maximum monthly average | report only (mg/L) | all year | 008 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 008 |
| Mercury, total [as Hg] | maximum monthly average | ≤ .001 mg/L | all year | 008 |
| Mercury, total [as Hg] | daily maximum | ≤ .002 mg/L | all year | 008 |
| Oil and grease visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 008 |
| pH | daily minimum | ≥ 6.5 SU | all year | 009 |
| pH | daily maximum | ≤ 9 SU | all year | 009 |
| Solids, total suspended | maximum monthly average | ≤ 20 mg/L | all year | 009 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 009 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 009 |
| Arsenic, total [as As] | maximum monthly average | ≤ .25 mg/L | all year | 009 |
| Arsenic, total [as As] | daily maximum | ≤ .5 mg/L | all year | 009 |
| Cadmium, total [as Cd] | maximum monthly average | ≤ .00158 mg/L | all year | 009 |
| Cadmium, total [as Cd] | daily maximum | ≤ .0021 mg/L | all year | 009 |
| Copper, total [as Cu] | maximum monthly average | ≤ .0172 mg/L | all year | 009 |
| Copper, total [as Cu] | daily maximum | ≤ .0155 mg/L | all year | 009 |
| Lead, total [as Pb] | maximum monthly average | ≤ .0012 mg/L | all year | 009 |
| Lead, total [as Pb] | daily maximum | ≤ .0716 mg/L | all year | 009 |
| Zinc, total [as Zn] | maximum monthly average | ≤ .228 mg/L | all year | 009 |
| Zinc, total [as Zn] | daily maximum | ≤ .144 mg/L | all year | 009 |
| Selenium, total [as Se] | maximum monthly average | ≤ .012 mg/L | all year | 009 |
| Floating solids, waste or visible foam-visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 009 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ .086 MGD | all year | 009 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 009 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 009 |
| Mercury, total [as Hg] | maximum monthly average | ≤ .001 mg/L | all year | 009 |
| Mercury, total [as Hg] | daily maximum | ≤ .002 mg/L | all year | 009 |
| Oil and grease visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 009 |
| pH | daily minimum | ≥ 6.5 SU | all year | 010 |
| pH | daily maximum | ≤ 9 SU | all year | 010 |
| Solids, total suspended | maximum monthly average | ≤ 20 mg/L | all year | 010 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 010 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 010 |
| Arsenic, total [as As] | daily maximum | ≤ .1 mg/L | all year | 010 |
| Cadmium, total [as Cd] | maximum monthly average | ≤ .0013 mg/L | all year | 010 |
| Cadmium, total [as Cd] | daily maximum | ≤ .0066 mg/L | all year | 010 |
| Copper, total [as Cu] | daily maximum | ≤ .038 mg/L | all year | 010 |
| Iron, total [as Fe] | daily maximum | ≤ 1.09 mg/L | all year | 010 |
| Lead, total [as Pb] | maximum monthly average | ≤ .023 mg/L | all year | 010 |
| Lead, total [as Pb] | daily maximum | ≤ .1 mg/L | all year | 010 |
| Zinc, total [as Zn] | maximum monthly average | ≤ .323 mg/L | all year | 010 |
| Zinc, total [as Zn] | daily maximum | ≤ .493 mg/L | all year | 010 |
| Selenium, total [as Se] | maximum monthly average | ≤ .005 mg/L | all year | 010 |
| Selenium, total [as Se] | daily maximum | ≤ .0184 mg/L | all year | 010 |
| Floating solids, waste or visible foam-visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 010 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ .65 MGD | all year | 010 |
| Solids, total dissolved | daily maximum | ≤ 1200 mg/L | all year | 010 |
| Mercury, total [as Hg] | maximum monthly average | ≤ .00002 mg/L | all year | 010 |
| Mercury, total [as Hg] | daily maximum | ≤ .00023 mg/L | all year | 010 |
| Oil and grease visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 010 |
| pH | daily minimum | ≥ 6.5 SU | all year | 011 |
| pH | daily maximum | ≤ 9 SU | all year | 011 |
| Solids, total suspended | maximum monthly average | ≤ 20 mg/L | all year | 011 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 011 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 011 |
| Arsenic, total [as As] | daily maximum | ≤ .013 mg/L | all year | 011 |
| Cadmium, total [as Cd] | maximum monthly average | ≤ .0013 mg/L | all year | 011 |
| Cadmium, total [as Cd] | daily maximum | ≤ .01 mg/L | all year | 011 |
| Copper, total [as Cu] | maximum monthly average | ≤ .102 mg/L | all year | 011 |
| Copper, total [as Cu] | daily maximum | ≤ .119 mg/L | all year | 011 |
| Lead, total [as Pb] | maximum monthly average | ≤ .0662 mg/L | all year | 011 |
| Lead, total [as Pb] | daily maximum | ≤ .01 mg/L | all year | 011 |
| Zinc, total [as Zn] | maximum monthly average | ≤ .224 mg/L | all year | 011 |
| Zinc, total [as Zn] | daily maximum | ≤ .5 mg/L | all year | 011 |
| Selenium, total [as Se] | maximum monthly average | ≤ .0058 mg/L | all year | 011 |
| Selenium, total [as Se] | daily maximum | ≤ .013 mg/L | all year | 011 |
| Floating solids, waste or visible foam-visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 011 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 3.9 MGD | all year | 011 |
| Duration of discharge | total | report only (hr) | all year | 011 |
| Oil and grease visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 011 |
| pH | daily minimum | ≥ 6.5 SU | all year | 012 |
| pH | daily maximum | ≤ 9 SU | all year | 012 |
| Solids, total suspended | maximum monthly average | ≤ 20 mg/L | all year | 012 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 012 |
| Oil & Grease | daily maximum | ≤ 10 mg/L | all year | 012 |
| Cyanide, total [as CN] | maximum monthly average | ≤ .1 mg/L | all year | 012 |
| Cyanide, total [as CN] | daily maximum | ≤ .2 mg/L | all year | 012 |
| Arsenic, total [as As] | maximum monthly average | ≤ .25 mg/L | all year | 012 |
| Arsenic, total [as As] | daily maximum | ≤ .5 mg/L | all year | 012 |
| Cadmium, total [as Cd] | maximum monthly average | ≤ .05 mg/L | all year | 012 |
| Cadmium, total [as Cd] | daily maximum | ≤ .1 mg/L | all year | 012 |
| Copper, total [as Cu] | maximum monthly average | ≤ .15 mg/L | all year | 012 |
| Copper, total [as Cu] | daily maximum | ≤ .3 mg/L | all year | 012 |
| Lead, total [as Pb] | maximum monthly average | ≤ .3 mg/L | all year | 012 |
| Lead, total [as Pb] | daily maximum | ≤ .6 mg/L | all year | 012 |
| Zinc, total [as Zn] | maximum monthly average | ≤ .224 mg/L | all year | 012 |
| Zinc, total [as Zn] | daily maximum | ≤ .5 mg/L | all year | 012 |
| Selenium, total [as Se] | daily maximum | ≤ .054 mg/L | all year | 012 |
| Selenium, total [as Se] | daily maximum | ≤ .054 mg/L | all year | 012 |
| Selenium, total [as Se] | year-to-date total | ≤ 900 kg/yr | all year | 012 |
| Floating solids, waste or visible foam-visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 012 |
| Flow, in conduit or thru treatment plant | annual maximum | ≤ 6468 Mgal/yr | all year | 012 |
| Solids, total dissolved | maximum monthly average | report only (mg/L) | all year | 012 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 012 |
| Mercury, total [as Hg] | maximum monthly average | ≤ .001 mg/L | all year | 012 |
| Mercury, total [as Hg] | daily maximum | ≤ .002 mg/L | all year | 012 |
| Oil and grease visual | instantaneous maximum | ≤ 0 N=0;Y=1 | all year | 012 |
| Pass/Fail Static 96 Hr Acute Cyprinodon Variega | daily maximum | ≤ 0 pass=0;fail=1 | all year | 012 |
| Pass/Fail Static 4 Day Chronic Cyprinodon Variega | quarterly maximum | ≤ 0 pass=0;fail=1 | all year | 012 |
| Solids, total suspended | maximum monthly average | ≤ 237 lb/d | all year | 104 |
| Solids, total suspended | daily maximum | ≤ 296 lb/d | all year | 104 |
| Arsenic, total [as As] | maximum monthly average | ≤ 11.3 lb/d | all year | 104 |
| Arsenic, total [as As] | daily maximum | ≤ 27.4 lb/d | all year | 104 |
| Cadmium, total [as Cd] | maximum monthly average | ≤ 1.57 lb/d | all year | 104 |
| Cadmium, total [as Cd] | daily maximum | ≤ 3.93 lb/d | all year | 104 |
| Copper, total [as Cu] | maximum monthly average | ≤ 12.1 lb/d | all year | 104 |
| Copper, total [as Cu] | daily maximum | ≤ 25.3 lb/d | all year | 104 |
| Lead, total [as Pb] | maximum monthly average | ≤ 2.56 lb/d | all year | 104 |
| Lead, total [as Pb] | daily maximum | ≤ 5.51 lb/d | all year | 104 |
| Zinc, total [as Zn] | maximum monthly average | ≤ 8.26 lb/d | all year | 104 |
| Zinc, total [as Zn] | daily maximum | ≤ 20.1 lb/d | all year | 104 |
| Flow, in conduit or thru treatment plant | maximum monthly average | report only (MGD) | all year | 104 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 104 |
| Selenium, total [as Se] | total | report only (kg/mo) | all year | SUM |
| Selenium, total [as Se] | annual total | ≤ 900 kg/yr | all year | SUM |
Cited limits by parameter: Utah's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/UT0000051 · MCP: https://passage-data.com/mcp