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Arizona Public Service Co

Electric Services, major discharger, San Juan County, NN. NPDES permit NN0000019 expired Nov 30, 2025; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (24 values), outfall 01A form A monthly (8 values), outfall 01B form A monthly (12 values), outfall 01E form A2 monthly (8 values), outfall 01E form A3 monthly (3 values), outfall 01A form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 61 reports late

Limits in force (56)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly average≤ 32.2 deg Call year001
Temperature, water deg. centigradedaily maximum≤ 35 deg Call year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Arsenic, total [as As]monthly averagereport only (ug/L)all year001
Arsenic, total [as As]daily maximumreport only (ug/L)all year001
Boron, total [as B]monthly averagereport only (ug/L)all year001
Boron, total [as B]daily maximumreport only (ug/L)all year001
Cadmium, total [as Cd]monthly averagereport only (ug/L)all year001
Cadmium, total [as Cd]daily maximumreport only (ug/L)all year001
Chromium, total [as Cr]monthly averagereport only (ug/L)all year001
Chromium, total [as Cr]daily maximumreport only (ug/L)all year001
Nickel, total [as Ni]monthly averagereport only (ug/L)all year001
Nickel, total [as Ni]daily maximumreport only (ug/L)all year001
Zinc, total [as Zn]monthly averagereport only (ug/L)all year001
Zinc, total [as Zn]daily maximumreport only (ug/L)all year001
Selenium, total [as Se]monthly averagereport only (ug/L)all year001
Selenium, total [as Se]daily maximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximum≤ 14.7 MGDall year001
Solids, total dissolvedmonthly averagereport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Mercury, total [as Hg]monthly averagereport only (ug/L)all year001
Mercury, total [as Hg]daily maximumreport only (ug/L)all year001
pHminimum≥ 6 SUall year01A
pHmaximum≤ 9 SUall year01A
Oil and greasemonthly average≤ 15 mg/Lall year01A
Oil and greasedaily maximum≤ 20 mg/Lall year01A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01A
Chlorine, total residualdaily maximum≤ .2 mg/Lall year01A
Chlorine, total residualdaily maximum≤ 954 lb/dall year01A
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximumreport only (pass=0;fail=1)all year01A
pHminimum≥ 6 SUall year01B
pHmaximum≤ 9 SUall year01B
Solids, total suspendedmonthly average≤ 30 mg/Lall year01B
Solids, total suspendeddaily maximum≤ 100 mg/Lall year01B
Copper, total [as Cu]monthly average≤ 1 mg/Lall year01B
Copper, total [as Cu]daily maximum≤ 1 mg/Lall year01B
Iron, total [as Fe]monthly average≤ 1 mg/Lall year01B
Iron, total [as Fe]daily maximum≤ 1 mg/Lall year01B
Oil and greasemonthly average≤ 15 mg/Lall year01B
Oil and greasedaily maximum≤ 20 mg/Lall year01B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01B
pHminimum≥ 6 SUall year01E
pHmaximum≤ 9 SUall year01E
Solids, total suspendedmonthly average≤ 30 mg/Lall year01E
Solids, total suspendeddaily maximum≤ 100 mg/Lall year01E
Oil and greasemonthly average≤ 15 mg/Lall year01E
Oil and greasedaily maximum≤ 20 mg/Lall year01E
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01E
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01E
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01E
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01E
Flow, in conduit or thru treatment plantrolling averagereport only (MGD)all year01E

How strict are these limits?

Cited limits by parameter: 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/NN0000019 · MCP: https://passage-data.com/mcp