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Sewage treatment plant, major discharger, Phoenix, Arizona. NPDES permit AZ0020559, in force until Jun 30, 2029. Last 12 months: over a limit once (last March 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| March 2026 | TU Static Renewal 7-Day Chronic Ceriodaphnia dubia, monthly median | 1.3 tox chronic | ≤ 1 tox chronic | 30% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 002 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 7100 kg/d | all year | 002 |
| Solids, total suspended | weekly average | ≤ 11000 kg/d | all year | 002 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 002 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 Ratio | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 Ratio | all year | 002 |
| Cyanide, total [as CN] | monthly average | ≤ 7.2 ug/L | all year | 002 |
| Cyanide, total [as CN] | daily maximum | ≤ 18 ug/L | all year | 002 |
| Cyanide, total [as CN] | monthly average | ≤ 1700 g/d | all year | 002 |
| Cyanide, total [as CN] | daily maximum | ≤ 4200 g/d | all year | 002 |
| Sulfide, total [as S] | monthly average | report only (ug/L) | all year | 002 |
| Sulfide, total [as S] | daily maximum | report only (ug/L) | all year | 002 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Selenium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year | 002 |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Dichlorobromomethane | monthly average | ≤ 17 ug/L | all year | 002 |
| Dichlorobromomethane | daily maximum | ≤ 36 ug/L | all year | 002 |
| Dichlorobromomethane | monthly average | ≤ 4100 g/d | all year | 002 |
| Dichlorobromomethane | daily maximum | ≤ 8600 g/d | all year | 002 |
| Dibromochloromethane | monthly average | ≤ 13 ug/L | all year | 002 |
| Dibromochloromethane | daily maximum | ≤ 30 ug/L | all year | 002 |
| Dibromochloromethane | monthly average | ≤ 3100 g/d | all year | 002 |
| Dibromochloromethane | daily maximum | ≤ 7100 g/d | all year | 002 |
| Di[2-ethylhexyl] phthalate [DEHP] | monthly average | ≤ 3 ug/L | all year | 002 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | ≤ 6 ug/L | all year | 002 |
| Di[2-ethylhexyl] phthalate [DEHP] | monthly average | ≤ 700 g/d | all year | 002 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | ≤ 1000 g/d | all year | 002 |
| Endosulfan, total | monthly average | ≤ .05 ug/L | all year | 002 |
| Endosulfan, total | daily maximum | ≤ .1 ug/L | all year | 002 |
| Endosulfan, total | monthly average | ≤ 10 g/d | all year | 002 |
| Endosulfan, total | daily maximum | ≤ 20 g/d | all year | 002 |
| Methoxychlor | monthly average | ≤ .02 ug/L | all year | 002 |
| Methoxychlor | daily maximum | ≤ .05 ug/L | all year | 002 |
| Methoxychlor | monthly average | ≤ 6 g/d | all year | 002 |
| Methoxychlor | daily maximum | ≤ 10 g/d | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ 9 ug/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 18 ug/L | all year | 002 |
| Chlorine, total residual | monthly average | ≤ 2100 g/d | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 4300 g/d | all year | 002 |
| E. coli, colony forming units [CFU] | monthly average | ≤ 126 CFU/100mL | all year | 002 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 575 CFU/100mL | all year | 002 |
| Hydrogen sulfide | monthly average | report only (ug/L) | all year | 002 |
| Hydrogen sulfide | daily maximum | report only (ug/L) | all year | 002 |
| Mercury, total recoverable | monthly average | ≤ .007 ug/L | all year | 002 |
| Mercury, total recoverable | daily maximum | ≤ .02 ug/L | all year | 002 |
| Mercury, total recoverable | monthly average | ≤ 2 g/d | all year | 002 |
| Mercury, total recoverable | daily maximum | ≤ 4 g/d | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 5900 kg/d | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 9500 kg/d | all year | 002 |
| BOD, carb-5 day, 20 deg C, percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Pass/Fail Static Renewal 96Hr Acute Ceriodaphnia dubia | monthly average | ≤ 0 pass=0;fail=1 | all year | 002 |
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | monthly median | report only (pass=0;fail=1) | all year | 002 |
| TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum) | monthly median | ≤ 1 tox chronic | all year | 002 |
| TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum) | daily maximum | ≤ 1.6 tox chronic | all year | 002 |
| Static 7Day Chronic Pimephales Promelas | monthly average | report only (tox chronic) | all year | 002 |
| Static 7Day Chronic Pimephales Promelas | daily maximum | report only (tox chronic) | all year | 002 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | monthly median | ≤ 1 tox chronic | all year | 002 |
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | daily maximum | ≤ 1.6 tox chronic | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 004 |
| Solids, total suspended | monthly average | ≤ 7200 kg/d | all year | 004 |
| Solids, total suspended | weekly average | ≤ 11000 kg/d | all year | 004 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 004 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 004 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | all year | 004 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 5900 kg/d | all year | 004 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 9500 kg/d | all year | 004 |
| BOD, carb-5 day, 20 deg C, percent removal | monthly average minimum | ≥ 85 % | all year | 004 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 004 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF |
| Solids, total suspended | weekly average | report only (mg/L) | all year | INF |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | INF |
| BOD, carbonaceous [5 day, 20 C] | weekly average | report only (mg/L) | all year | INF |
Cited limits by parameter: Arizona'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/AZ0020559 · MCP: https://passage-data.com/mcp