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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
Phoenix 91st Ave WWTPPhoenix230 MGD (million gallons per day)2022
Phoenix 23rd Ave WWTPPhoenix60 MGD (million gallons per day)2022
PCRWRD Greater Tucson CollectionTucson57.4 MGD (million gallons per day)2022
PCRWRD Tres Rios Water Reclamation FacilityTucson50 MGD (million gallons per day)2022
PCRWRD - Agua Nueva WRFTucson35.2 MGD (million gallons per day)2022
Mesa Greenfield WRPGilbert30 MGD (million gallons per day)2022
Chandler Airport WRFChandler27 MGD (million gallons per day)2022
Scottsdale Water Campus WRPScottsdale24 MGD (million gallons per day)2022
Scottsdale Water Campus AWTScottsdale20 MGD (million gallons per day)2022
Chandler Ocotillo WRFChandler18 MGD (million gallons per day)2022
Mesa Northwest WRPMesa18 MGD (million gallons per day)2022
TOLLESON WWTFTolleson17.5 MGD (million gallons per day)2022
IBWC Nogales International WTPRio Rico15.7 MGD (million gallons per day)2022
Surprise SPA 1 WRFSurprise12.8 MGD (million gallons per day)2022
Casa Grande WWTFCasa Grande12 MGD (million gallons per day)2022
Yuma Figueroa WPCFYuma12 MGD (million gallons per day)2022
Glendale West Area WRFGlendale11.5 MGD (million gallons per day)2022
Gilbert Neely WWTFGilbert11 MGD (million gallons per day)2022
CHANDLER LONE BUTTE WWTFChandler10 MGD (million gallons per day)2022
Peoria Butler WRFPeoria10 MGD (million gallons per day)2022
Avondale WWTFAvondale9 MGD (million gallons per day)2022
MESA SOUTHEAST WRPMesa8 MGD (million gallons per day)2022
Flagstaff Wildcat Hill WWTFFlagstaff6 MGD (million gallons per day)2022
Goodyear 157th Ave WWRFGoodyear6 MGD (million gallons per day)2022
Prescott Sundog WWTFPrescott6 MGD (million gallons per day)2022
Kingman Hilltop WWTFKingman5.1 MGD (million gallons per day)2022
Prescott Airport WWTFPrescott4.75 MGD (million gallons per day)2022
Buckeye Central Beloat Wastewater PlantBuckeye4.5 MGD (million gallons per day)2022
Glendale Arrowhead Ranch WWRFGlendale4.5 MGD (million gallons per day)2022
PCRWRD Green Valley WRFGreen Valley4.1 MGD (million gallons per day)2022
Sierra Vista WWTFSierra Vista4 MGD (million gallons per day)2022
Flagstaff Rio de Flag WWTFFlagstaff4 MGD (million gallons per day)2022
Peoria Beardsley WRFPeoria4 MGD (million gallons per day)2022
Bullhead City Section 10 WWTPBullhead City4 MGD (million gallons per day)2022
PCRWRD Avra Valley WWTFTucson4 MGD (million gallons per day)2022
Coolidge - Airport WWTFCoolidge4 MGD (million gallons per day)2022
Prescott Valley WRPPrescott Valley3.75 MGD (million gallons per day)2022
El Mirage WRFEl Mirage3.6 MGD (million gallons per day)2022
Lake Havasu City North Regional WWTPLake Havasu City3.5 MGD (million gallons per day)2022
Yuma Desert Dunes WRFYuma3.3 MGD (million gallons per day)2022
Buckeye Sundance WRFBuckeye3.2 MGD (million gallons per day)2022
Surprise SPA2 WRFSurprise3.2 MGD (million gallons per day)2022
Douglas WWTFDouglas3.1 MGD (million gallons per day)2022
Fountain Hills SD Advanced Water Treatment Facility (AWTF)Fountain Hills2.9 MGD (million gallons per day)2022
Fountain Hills SD WWTPFountain Hills2.9 MGD (million gallons per day)2022
Green Valley American Gulch Water Reclamation Facility (Payson)Payson2.8 MGD (million gallons per day)2022
Lake Havasu City Pittsburgh Island WWTPLake Havasu City2.5 MGD (million gallons per day)2022
Florence South WRFFlorence2.5 MGD (million gallons per day)2022
Show Low WWTFShow Low2.43 MGD (million gallons per day)2022
Peoria Jomax WRFPeoria2.25 MGD (million gallons per day)2022
Lake Havasu City Mulberry Ave STPLake Havasu City2.2 MGD (million gallons per day)2022
Winslow WWTFWinslow2.2 MGD (million gallons per day)2022
Superstition Mountain WWTPApache Junction2.1 MGD (million gallons per day)2022
Page WWTFPage2 MGD (million gallons per day)2022
Safford WWTFSafford2 MGD (million gallons per day)2022
Bullhead City Section 18 WWTFBullhead City2 MGD (million gallons per day)2022
Pinetop-Lakeside SD WWTFPinetop2 MGD (million gallons per day)2022
Coolidge WWTFCoolidge2 MGD (million gallons per day)2022
Eloy WWTFEloy2 MGD (million gallons per day)2022
Somerton WWTFSomerton1.8 MGD (million gallons per day)2022
Surprise SPA3 WRFSurprise1.8 MGD (million gallons per day)2022
Sedona WWTFSedona1.63 MGD (million gallons per day)2022
Scottsdale Gainey Ranch WRFScottsdale1.6 MGD (million gallons per day)2022
Marana WWTFMarana1.5 MGD (million gallons per day)2022
Sahuarita WWTRSahuarita1.5 MGD (million gallons per day)2022
Arizona City Sanitary DistrictArizona City1.5 MGD (million gallons per day)2022
Cottonwood Mingus WWTFCottonwood1.5 MGD (million gallons per day)2022
SAN LUIS SBR WESTSan Luis1.5 MGD (million gallons per day)2022
PCRWRD Corona de Tucson WWTFSahuarita1.3 MGD (million gallons per day)2022
Benson WWTFBenson1.2 MGD (million gallons per day)2022
Bisbee - San Jose WWTFBisbee1.2 MGD (million gallons per day)2022
Globe WWTFGlobe1.2 MGD (million gallons per day)2022
Buckeye Festival Ranch Wastewater PlantBuckeye1 MGD (million gallons per day)2022
Buckeye Tartesso West WRFBuckeye1 MGD (million gallons per day)2022
San Luis East Mesa WWTPSan Luis1 MGD (million gallons per day)2022
Williams WWTFWilliams0.98 MGD (million gallons per day)2022
Thatcher WWTFThatcher0.84 MGD (million gallons per day)2022
Wickenburg WWTFWickenburg0.8 MGD (million gallons per day)2022
Goodyear Corgett WRPGoodyear0.8 MGD (million gallons per day)2022
Holbrook WWTFHolbrook0.8 MGD (million gallons per day)2022
Prescott Hassayampa WRPPrescott0.75 MGD (million gallons per day)2022
South Grand Canyon Sanitary District Tusayan WWTPGrand Canyon0.75 MGD (million gallons per day)2022
Goodyear Rainbow Valley WRFGoodyear0.75 MGD (million gallons per day)2022
Superior WWTFSuperior0.75 MGD (million gallons per day)2022
Kachina Village WWTFFlagstaff0.7 MGD (million gallons per day)2022
Colorado River Joint VentureParker0.7 MGD (million gallons per day)2022
Camp Verde SD WWTFCamp Verde0.65 MGD (million gallons per day)2022
Miami WWTFMiami0.64 MGD (million gallons per day)2022
Kingman Downtown WWTFKingman0.61 MGD (million gallons per day)2022
Pinewood Sanitary DistrictMunds Park0.6 MGD (million gallons per day)2022
Willcox WWTFWillcox0.6 MGD (million gallons per day)2022
Snowflake WWTFSnowflake0.6 MGD (million gallons per day)2022
Chino ValleyChino Valley0.5 MGD (million gallons per day)2022
Gila Bend WWTFGila Bend0.5 MGD (million gallons per day)2022
Big Park Improvement DistrictSedona0.5 MGD (million gallons per day)2022
St. Johns WWTPSaint Johns0.48 MGD (million gallons per day)2022
Quartzsite WWTPQuartzsite0.45 MGD (million gallons per day)2022
Taylor WWTFTaylor0.43 MGD (million gallons per day)2022
Springerville WWTFSpringerville0.35 MGD (million gallons per day)2022
Joseph City SD WWTFJoseph City0.33 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.