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Pima County - Division Of Solid Waste Management

Sewerage Systems, Tucson, Arizona. NPDES permit AZ0026093, in force until Aug 21, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (12 values), form S twice a year, form Y yearly
Renewal application due
Feb 22, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 15 reports late

Limits in force (56)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHminimumreport only (SU)all year
pHmaximum≤ 9 SUall year
pHmaximumreport only (SU)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Cyanide, total [as CN]monthly average≤ 8 ug/Lall year
Cyanide, total [as CN]daily maximum≤ 16 ug/Lall year
Cyanide, total [as CN]daily maximumreport only (ug/L)all year
Sulfide, total [as S]daily maximumreport only (mg/L)all year
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year
Arsenic, total recoverabledaily maximumreport only (ug/L)all year
Iron, total recoverablemonthly average≤ 800 ug/Lall year
Iron, total recoverabledaily maximum≤ 2000 ug/Lall year
Iron, total recoverabledaily maximumreport only (ug/L)all year
Selenium, total recoverablemonthly average≤ 2 ug/Lall year
Selenium, total recoverabledaily maximum≤ 3 ug/Lall year
Selenium, total recoverabledaily maximumreport only (ug/L)all year
Thallium, total recoverabledaily maximumreport only (ug/L)all year
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all year
Chromium, total [as Cr]daily maximumreport only (ug/L)all year
Nickel, total recoverabledaily maximumreport only (ug/L)all year
Silver total recoverabledaily maximumreport only (ug/L)all year
Zinc, total recoverabledaily maximumreport only (ug/L)all year
Cadmium, total recoverabledaily maximumreport only (ug/L)all year
Lead, total recoverabledaily maximumreport only (ug/L)all year
Copper, total recoverabledaily maximumreport only (ug/L)all year
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (ug/L)all year
Antimony, total recoverabledaily maximumreport only (ug/L)all year
Tetrachloroethylenemonthly averagereport only (ug/L)all year
Tetrachloroethylenedaily maximum≤ 5 ug/Lall year
Tetrachloroethylenedaily maximumreport only (ug/L)all year
Vinyl chloridemonthly averagereport only (ug/L)all year
Vinyl chloridedaily maximum≤ 2 ug/Lall year
Vinyl chloridedaily maximumreport only (ug/L)all year
Trichloroethylenemonthly averagereport only (ug/L)all year
Trichloroethylenedaily maximum≤ 5 ug/Lall year
Trichloroethylenedaily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Mercury, total recoverablemonthly average≤ .01 ug/Lall year
Mercury, total recoverabledaily maximum≤ .02 ug/Lall year
Mercury, total recoverabledaily maximumreport only (ug/L)all year
cis-1,2-Dichloroethylenemonthly averagereport only (ug/L)all year
cis-1,2-Dichloroethylenedaily maximum≤ 70 ug/Lall year
cis-1,2-Dichloroethylenedaily maximumreport only (ug/L)all year
Pass/Fail Static 48Hr Acute Ceriodaphnia dubiamonthly medianreport only (pass=0;fail=1)all year
Pass/Fail Static 96 Hr Acute Pimephales Promelasmonthly medianreport only (pass=0;fail=1)all year
TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)monthly medianreport only (tox chronic)all year
TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)daily maximumreport only (tox chronic)all year
Static 7Day Chronic Pimephales Promelasmonthly medianreport only (tox chronic)all year
Static 7Day Chronic Pimephales Promelasdaily maximumreport only (tox chronic)all year
TU Static Renewal 7-Day Chronic Ceriodaphnia dubiamonthly medianreport only (tox chronic)all year
TU Static Renewal 7-Day Chronic Ceriodaphnia dubiadaily maximumreport only (tox chronic)all year

How strict are these limits?

Cited limits by parameter: Arizona's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AZ0026093 · MCP: https://passage-data.com/mcp