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World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in United States · Arizona

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133 inventory records · EPA Clean Watersheds Needs Survey 2022

Data years: 2022. The inventory date does not establish current operation.

133 results

CompareNameNative sizeYear
Eagar WWTPSpringerville0.32 MGD (million gallons per day)2022
Cottonwood River Front WRFCottonwood0.3 MGD (million gallons per day)2022
Kino Springs WWTFNogales0.26 MGD (million gallons per day)2022
Tombstone WWTFTombstone0.25 MGD (million gallons per day)2022
Kearny STPKearny0.25 MGD (million gallons per day)2022
Clarkdale WWTFClarkdale0.25 MGD (million gallons per day)2022
Buckskin SD Sandpiper WWTPParker0.228 MGD (million gallons per day)2022
Fredonia WWTFFredonia0.21 MGD (million gallons per day)2022
Mammoth WWTFMammoth0.2 MGD (million gallons per day)2022
Little Colorado River SD (Greer) WWTFGreer0.18 MGD (million gallons per day)2022
Clifton WWTFClifton0.175 MGD (million gallons per day)2022
Valley Farms SepticsValley Farms0.162 MGD (million gallons per day)2022
Huachuca City WWTFHuachuca City0.12 MGD (million gallons per day)2022
Winkelman WWTFWinkelman0.12 MGD (million gallons per day)2022
Yavapai-Apache Nation Tunlii WWTPCamp Verde0.12 MGD (million gallons per day)2022
Pima WWTFPima0.11 MGD (million gallons per day)2022
Patagonia WWTFPatagonia0.11 MGD (million gallons per day)2022
PCRWRD Arivaca Junction WWTFAmado0.1 MGD (million gallons per day)2022
Naco SD WWTFNaco0.08 MGD (million gallons per day)2022
Duncan WWTFBisbee0.08 MGD (million gallons per day)2022
Oracle WWTFOracle0.08 MGD (million gallons per day)2022
Alpine SD WWTFAlpine0.077 MGD (million gallons per day)2022
Marana High School WWTPTucson0.07 MGD (million gallons per day)2022
Jerome WWTFJerome0.07 MGD (million gallons per day)2022
Queen Valley WWTFPine0.06 MGD (million gallons per day)2022
Florence North WRFFlorence0.046 MGD (million gallons per day)2022
Valley Vista CollectionSomerton0.04 MGD (million gallons per day)2022
Martinez Lake LagoonYuma0.02 MGD (million gallons per day)2022
Pinal County Eleven Mile Corner Rd WWTPCasa Grande0.02 MGD (million gallons per day)2022
PCRWRD Mount Lemmon WWTFMount Lemmon0.015 MGD (million gallons per day)2022
Pinal County Stanfield HUD WWTPStanfield0.01 MGD (million gallons per day)2022
Seligman WWTFPrescott0.007 MGD (million gallons per day)2022
Pinal County Maricopa HUD WWTPCasa Grande0.007 MGD (million gallons per day)2022

Regulatory context

General reference. This is not an exhaustive review of applicable law.

United States: Clean Water Act / NPDES

NPDES regulates pollutant discharges from point sources to waters of the United States. The permit sets limits and monitoring conditions. A CWNS code identifies an inventory record, not an NPDES permit.

  • Permit identifier and permitting authority: EPA or an authorized state.
  • Outfall and receiving water; sewer connections follow a different control route.
  • Current permit conditions, limits and dated measurements; these are not included in CWNS.

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.