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Drinking water / AZ

PFAS in Arizona drinking water

152 Arizona public water systems tested under UCMR5. 57 detected at least one PFAS compound; 95 detected none at the reporting thresholds. Values are the highest single result per compound, in ng/L (parts per trillion). The federal limit for PFOA and PFOS is 4 ng/L.

Water systemServesHighest results (ng/L)Reading
ARIZONA WATER CO - BISBEE

AZ0402001

CochisePFPeA 17PFHxA 10PFBS 10PFOA 9.7 *above final limit
ARIZONA WATER CO - SEDONA

AZ0403003

CoconinoPFBS 30PFPeA 10.3PFOA 10 *PFHxA 10above final limit
BIG PARK WATER COMPANY

AZ0413012

YavapaiPFBS 28PFOA 21 *PFHxA 4.6PFPeA 4.6above final limit
City of Avondale

AZ0407088

MaricopaPFPeA 17.2PFBS 15.6PFOA 13.5 *PFHxA 12.9above final limit
EPCOR WATER - MOHAVE

AZ0408032

MohavePFOS 7.3 *PFHxS 7PFOA 5.3 *PFPeA 3.7above final limit
EPCOR WATER - NORTH MOHAVE VALLEY

AZ0408068

MohavePFOS 5.5 *PFBS 3.6PFHxS 3.4PFPeA 3.4above final limit
FARMERS WATER CO SANTA RITA SPRINGS

AZ0410213

PimaPFBS 5.8PFOS 5 *PFHxS 4above final limit
FLOWING WELLS IRRIGATION DISTRICT

AZ0410051

PimaPFHxS 9PFOS 6 *PFOA 5 *PFBS 4above final limit
GILBERT, TOWN OF

AZ0407092

MaricopaPFBS 18.1PFOS 9.8 *PFOA 6.5 *PFPeA 6.2above final limit
GLOBE CITY OF

AZ0404008

GilaPFBS 113.3PFHxS 23.7PFOS 9.5 *PFBA 9.1above final limit
GOODYEAR WATER DEPARTMENT

AZ0407094

MaricopaPFBS 13PFOS 7.9 *PFHxS 6.1PFOA 4.8 *above final limit
JOHNSON UTIL - ANTHEM AT MERRILL RANCH

AZ0411136

PinalPFPeA 40PFBS 24PFHxA 22PFOA 19 *above final limit
LIBERTY WATER LPSCO

AZ0407046

MaricopaPFPeA 54.6PFHxA 23.2PFBA 20.3PFHxS 18.9above final limit
LIBERTY WATER RIO RICO

AZ0412011

Santa CruzPFOS 40.9 *PFBS 20PFHxS 10.9PFOA 10 *above final limit
MARANA MUNICIPAL - HARTMAN VISTAS

AZ0410329

PimaPFOS 23 *PFHxS 15above final limit
MARANA MUNICIPAL - MARANA

AZ0410150

PimaPFHxS 20.7PFOS 17.9 *PFOA 6.3 *PFHxA 3.9above final limit
PAYSON TOWN OF

AZ0404032

GilaPFBS 54.8PFPeA 48.2PFOS 42.2 *PFOA 40.9 *above final limit
PEORIA CITY OF

AZ0407096

MaricopaPFBS 14.8PFOA 5.6 *PFHxS 3.7above final limit
PHOENIX INTERNATIONAL RACEWAY

AZ0407406

MaricopaPFOS 10 *above final limit
PONDEROSA PARK DWID

AZ0413044

YavapaiPFBS 24PFOA 7 *PFHxA 6.5PFPeA 6.2above final limit
PRESCOTT CITY OF

AZ0413045

YavapaiPFPeA 14.9PFHxA 12.6PFOA 11.4 *PFOS 8.7 *above final limit
TEMPE CITY OF

AZ0407100

MaricopaPFHxS 70.5PFOS 55.8 *PFOA 38.7 *PFBS 25.7above final limit
US ARMY FORT HUACHUCA

AZ0402078

CochisePFHxS 14.7PFOA 7 *PFOS 6.5 *PFPeA 5.4above final limit
USAF LUKE AIR FORCE BASE

AZ0407305

MaricopaPFPeA 12.4PFOS 11.7 *PFOA 10 *PFHxS 8.7above final limit
ARIZONA WATER CO - LAKESIDE

AZ0409003

NavajoPFBS 3.4detected
ARIZONA WATER CO - MIAMI CLAYPOOL

AZ0404002

GilaPFBS 37PFHxA 16PFHxS 12PFBA 12detected
ARIZONA WATER CO - PINAL VALLEY

AZ0411009

PinalPFBS 91.1PFPeA 20.8PFBA 19.9PFHxA 18.6detected
ARIZONA WATER CO - SIERRA VISTA

AZ0402004

CochisePFHxA 4.4PFPeA 3detected
AZ Water Co. - White Tanks

AZ0407128

MaricopaPFBA 7detected
BELLA VISTA CITY WATER SYSTEM

AZ0402010

CochisePFPeA 3.5detected
BERMUDA WATER COMPANY INC

AZ0408063

MohavePFBS 5.6PFPeA 5.1PFHxA 3detected
CHANDLER CITY OF

AZ0407090

MaricopaPFBS 12PFPeA 5.3PFBA 5PFHxA 3.5detected
CHINO VALLEY HIGH SCHOOL

AZ0413087

YavapaiPFPeA 3.5PFHxA 3.1detected
CHINO VALLEY SCHOOL - DEL RIO

AZ0413187

YavapaiPFPeA 3detected
City of Lake Havasu

AZ0408022

MohavePFBS 3detected
COTTONWOOD MUNICIPAL WATER CW1

AZ0413025

YavapaiPFPeA 3.2detected
EAGAR TOWN OF

AZ0401004

ApachePFBS 3.2detected
EL MIRAGE CITY OF

AZ0407091

MaricopaPFPeA 10PFBS 9PFHxA 6PFOA 4detected
FLAGSTAFF CITY OF

AZ0403008

CoconinoPFBA 6.1detected
FLORENCE WATER COMPANY

AZ0411017

PinalPFBS 60PFBA 9PFHxS 7detected
GLEN CANYON NRA WAHWEAP

AZ0403712

CoconinoPFBA 5.4detected
GLENDALE CITY OF

AZ0407093

MaricopaPFBS 11.7detected
LAGO DEL ORO WATER COMPANY

AZ0411117

PinalPFPeA 6.5PFHxA 4.1detected
MARANA MUNICIPAL - PICTURE ROCKS

AZ0410092

PimaPFBA 23PFPeA 16PFHxA 12PFBS 7.8detected
MESA CITY OF

AZ0407095

MaricopaPFBS 15.2PFHxS 9.3PFHxA 3.2detected
METROPOLITAN DWID

AZ0410076

PimaPFBS 4.8PFHxS 3.9detected
MORENCI WATER ELEC CO MAIN

AZ0406003

GreenleePFBS 25PFBA 6.7detected
PHOENIX CITY OF

AZ0407025

MaricopaPFBS 16PFBA 6detected
PINE STRAWBERRY DWID

AZ0404034

GilaPFPeA 4.5PFHxA 3.6detected
PONDEROSA DWID

AZ0409023

NavajoPFHxA 12.8PFBS 12.1PFPeA 4.1detected
SAFFORD CITY OF

AZ0405005

GrahamPFBS 144PFBA 13.2detected
SCOTTSDALE CITY OF

AZ0407098

MaricopaPFBS 3.2detected
TOLLESON CITY OF

AZ0407101

MaricopaPFBS 14.2PFBA 6.5detected
TUCSON CITY OF

AZ0410112

PimaPFBA 8.1detected
UNIVERSITY OF ARIZONA

AZ0420423

PimaPFPeA 7.4PFBA 7.2PFHxA 6.4detected
USMC YUMA MAIN SYSTEM

AZ0414082

YumaPFHxS 3.1detected
VALLEY UTILITIES WATER COMPANY GLENDALE

AZ0407079

MaricopaPFPeA 59PFHxA 52PFBA 16PFHpA 10detected

* exceeds the final federal MCL for that compound. Detections of compounds whose limits EPA proposed to rescind in May 2026 are shown for information.

Systems with no PFAS detected

95 tested systems reported no PFAS above the laboratory reporting limits. Each has its own page with its sampling detail.

A detection at the system level does not tell you what reaches one specific tap: levels vary by entry point, treatment train and plumbing. A certified lab test of your own tap settles it. Testing and treatment options