County · Arizona

Maricopa County, Arizona: drinking water records

Name: Drinking water records for Maricopa County, Arizona
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 107 community water systems across 134 ZIP codes in Maricopa County, then find water-testing resources and available recent monitoring-station readings.

In focus107Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 44 of the 107 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 107 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Phoenix City of AZ0407025	1,695,000	1,565	2	1	2.7 ppbbelow the action level
Gilbert, Town of AZ0407092	247,600	1,260	6	3	0 ppbbelow the action level
Chandler City of AZ0407090	247,328	1,650	4	1	1.4 ppbbelow the action level
Peoria City of AZ0407096	187,676	1,080	3	1	0 ppbbelow the action level
Tempe City of AZ0407100	165,000	720	9	2	4.4 ppbbelow the action level
Epcor - Agua Fria AZ0407695	127,718	900	0	2	0 ppbbelow the action level
Liberty Water Lpsco AZ0407046	55,810	420	8	1	0 ppbbelow the action level
Epcor - Chaparral City AZ0407017	26,026	240	0	1	0 ppbbelow the action level
Epcor - Anthem AZ0407504	23,826	120	0	1	0 ppbbelow the action level
Gric DPW Wild Horse Pass 090400692	22,795	120	0	2	0.6 ppbbelow the action level
Salt River Public Works 090400109	20,951	120	0	1	2 ppbbelow the action level
Pima Utilities AZ0407120	20,000	180	0	2	10 ppbbelow the action level
USAF Luke Air Force Base AZ0407305	8,440	360	7	2	0 ppbbelow the action level
Cave Creek Water AZ0407016	5,895	120	0	4	0 ppbbelow the action level
Gric DPW Sacaton 090400047	5,307	180	0	1	1.3 ppbbelow the action level
Epcor - Tierra del Rio AZ0407532	4,868	60	0	2	0 ppbbelow the action level
Aspc Lewis Complex Water System AZ0407555	4,300	60	0	3	2.3 ppbbelow the action level
Mesa City of AZ0407095	466,000	2,100	3	0	5.0 ppbbelow the action level
Scottsdale City of AZ0407098	241,361	540	1	0	2.3 ppbbelow the action level
Glendale City of AZ0407093	234,766	660	1	0	1.6 ppbbelow the action level
Avondale City of AZ0407088	96,130	420	8	0	0 ppbbelow the action level
Queen Creek Town of AZ0407033	95,502	1,140	0	0	0 ppbbelow the action level
Goodyear Water Department AZ0407094	50,001	420	6	0	0 ppbbelow the action level
Surprise City of - Mountain Vista AZ0407500	40,007	240	0	0	0 ppbbelow the action level
El Mirage City of AZ0407091	39,884	540	4	0	0 ppbbelow the action level
Epcor - Sun City AZ0407099	38,016	420	0	0	0 ppbbelow the action level
City of Buckeye - Valencia Town Division AZ0407078	30,377	60	0	0	0 ppbbelow the action level
Epcor - Sun City West AZ0407150	25,796	120	0	0	0 ppbbelow the action level
Desert Oasis AZ0407523	23,963	120	0	0	0 ppbbelow the action level
Arizona Water Co - White Tanks AZ0407128	18,858	300	1	0	0 ppbbelow the action level
City of Buckeye Sonora - Sundance AZ0407154	15,783	120	0	0	0 ppbbelow the action level
Epcor - North East Agua Fria AZ0407531	14,723	120	0	0	0 ppbbelow the action level
Epcor - Paradise Valley/Scottsdale AZ0407056	14,107	60	0	0	0 ppbbelow the action level
Festival Ranch AZ0407765	10,313	60	0	0	0 ppbbelow the action level
Beardsley Water Company 1 AZ0407007	10,263	180	0	0	0 ppbbelow the action level
Tolleson City of AZ0407101	9,300	240	2	0	0.7 ppbbelow the action level
Buckeye City of AZ0407089	7,008	60	0	0	0 ppbbelow the action level
Sunrise Water Company AZ0407070	6,490	180	0	0	0 ppbbelow the action level
Wickenburg Town of AZ0407045	6,481	300	0	0	0 ppbbelow the action level
Rose Valley Water Company AZ0407065	6,202	60	0	0	0 ppbbelow the action level
Valley Utilities Water Company Glendale AZ0407079	5,940	240	4	0	0 ppbbelow the action level
Epcor- Rio Verde AZ0407121	5,330	60	0	0	0 ppbbelow the action level
Desert Hills Water AZ0407026	4,220	180	0	0	0 ppbbelow the action level
Carefree Water Company AZ0407015	3,894	240	0	0	0 ppbbelow the action level
Gric DPW Casa Blanca_bapchule 090400092	2,603	0	0	1	1.6 ppbbelow the action level
Gric DPW Stotonic 090400096	2,566	0	0	1	0.6 ppbbelow the action level
Clearwater Utility Company INC AZ0407019	2,175	0	0	2	0 ppbbelow the action level
Federal Correction Institution AZ0407700	1,500	0	0	7	0 ppbbelow the action level
Vwc Buckeye Division Sun Valley AZ0407195	1,378	0	0	1	0 ppbbelow the action level
Aguila Water Service AZ0407003	987	0	0	1	0 ppbbelow the action level
Circle City - City of Surprise AZ0407112	815	0	0	1	0 ppbbelow the action level
Adaman Mutual Water Company AZ0407001	700	0	0	4	0 ppbbelow the action level
Adjc Adobe Mountain School AZ0407307	680	0	0	1	0 ppbbelow the action level
Orangewood Mobile Home Park AZ0407682	500	0	0	3	0 ppbbelow the action level
Country Club Acres Water INC AZ0407021	431	0	0	2	3.6 ppbbelow the action level
Mobile Gardens Dwid AZ0407086	400	0	0	1	0 ppbbelow the action level
Shangri la Ranch AZ0407660	345	0	0	17	0 ppbbelow the action level
Country Home MHP AZ0407343	300	0	0	1	0 ppbbelow the action level
Hacienda del Sol MHP AZ0407366	300	0	0	1	0 ppbbelow the action level
Saguaro Acres Cfd AZ0407670	175	0	0	1	0 ppbbelow the action level
Apache Lake Marina Resort AZ0407630	123	0	0	5	0 ppbbelow the action level
Caballeros Water Company AZ0407012	100	0	0	1	3.7 ppbbelow the action level
Peekaboo Water Coop AZ0407671	100	0	0	2	0 ppbbelow the action level
Sontel Water Coop AZ0407900	80	0	0	1	0.3 ppbbelow the action level
Two Tanks Community Well AZ0407524	76	0	0	3	0 ppbbelow the action level
Belmont Mountain Dairy AZ0407736	72	0	0	1	0 ppbbelow the action level
Valley View Water Company AZ0407677	60	0	0	1	0 ppbbelow the action level
Rancho Wells INC AZ0407482	59	0	0	1	3.3 ppbbelow the action level
Greenfield Ranchettes AZ0407492	53	0	0	6	5 ppbbelow the action level
Grandview Water Company AZ0407039	50	0	0	10	1.1 ppbbelow the action level
67 Ave Property Owners Association AZ0407280	40	0	0	2	2.5 ppbbelow the action level
Gric DPW Aerodyne 090400691	35	0	0	1	0.7 ppbbelow the action level
G Lazy B Mobile Home Park AZ0407493	25	0	0	1	3.2 ppbbelow the action level
City of Buckeye Tartesso Water System AZ0407526	10,123	0	0	0	0 ppbbelow the action level
Chandler Heights Citrus Irrigation Dist AZ0407409	2,620	0	0	0	3.9 ppbbelow the action level
Gila Bend Town of AZ0407069	1,922	0	0	0	0 ppbbelow the action level
Berneil Water Company AZ0407008	1,388	0	0	0	6.9 ppbbelow the action level
West End Water Company - Wittman AZ0407067	1,200	0	0	0	0 ppbbelow the action level
Trillium Water System AZ0407773	1,100	0	0	0	0 ppbbelow the action level
Chaparral Water Company AZ0407064	963	0	0	0	0 ppbbelow the action level
Patton Place Estates AZ0407517	795	0	0	0	0 ppbbelow the action level
Gw -Bwc, INC- Sunshine AZ0407071	604	0	0	0	0 ppbbelow the action level
Pioneer RV Resort AZ0407624	583	0	0	0	9.3 ppbbelow the action level
Surprise, City of Buena Vista AZ0407538	520	0	0	0	0 ppbbelow the action level
Peak View Ranch AZ0407528	508	0	0	0	0 ppbbelow the action level
Gw -Bwc, INC- Buckeye Ranch AZ0407618	422	0	0	0	0 ppbbelow the action level
Michigan Trailer Park AZ0407621	400	0	0	0	14 ppbbelow the action level
Saguaro View Mgmt Company AZ0407169	400	0	0	0	0 ppbbelow the action level
Tonto Hills Dwid AZ0407076	350	0	0	0	0 ppbbelow the action level
Gw -Bwc, INC.- Nswc AZ0407179	319	0	0	0	0 ppbbelow the action level
Gw -Bwc, INC- Eagletail AZ0407032	288	0	0	0	0 ppbbelow the action level
Vwc Buckeye Div Bulfer Primrose AZ0407114	280	0	0	0	0 ppbbelow the action level
Kaka 090400037	150	0	0	0	1.1 ppbbelow the action level
Gw- Bwc, INC- Dixie AZ0407030	132	0	0	0	1.1 ppbbelow the action level
Morristown Water Company AZ0407111	131	0	0	0	0 ppbbelow the action level
Paloma Ranch AZ0407411	112	0	0	0	0 ppbbelow the action level
Beardsley Water Company 3 AZ0407511	96	0	0	0	1 ppbbelow the action level
Gilbert Rigg Well Coop AZ0407903	95	0	0	0	0 ppbbelow the action level
Hopeville Water System AZ0407633	89	0	0	0	0 ppbbelow the action level
White Tank Well INC AZ0407549	87	0	0	0	0 ppbbelow the action level
Triple G Dairy AZ0407713	84	0	0	0	0 ppbbelow the action level
Buckeye Acres MHP AZ0407392	71	0	0	0	0 ppbbelow the action level
Gw -Bwc, INC.- Wpe #6 AZ0407733	69	0	0	0	0 ppbbelow the action level
Gw- Bwc, INC- Roseview AZ0407082	66	0	0	0	0 ppbbelow the action level
West End Water Company - Wheat AZ0407167	55	0	0	0	0 ppbbelow the action level
Gw- Bwc, INC- Garden City AZ0407037	51	0	0	0	0 ppbbelow the action level
Olive Avenue HOA AZ0407484	25	0	0	0	0 ppbbelow the action level

USGS · Monitoring stations

The water, more recently.

Available station readings in Maricopa County, Arizona. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in Maricopa County

134ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Aguila
Arlington
Avondale
Buckeye
Carefree
Cave Creek
Chandler
Citrus Park
Dateland
El Mirage
Fountain Hills
Gila Bend
Gilbert
Glendale
Goodyear
Mesa
New River
Paradise Valley
Peoria
Phoenix
Rio Verde
Scottsdale
Sun City
Sun City West
Surprise
Tempe
Wickenburg
Youngtown

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

85003Phoenix
85004Phoenix
85006Phoenix
85007Phoenix
85008Phoenix
85009Phoenix
85012Phoenix
85013Phoenix
85014Phoenix
85015Phoenix
85016Phoenix
85017Phoenix
85018Phoenix
85019Phoenix
85020Phoenix
85021Phoenix
85022Phoenix
85023Phoenix
85024Phoenix
85026Phoenix
85027Phoenix
85028Phoenix
85029Phoenix
85031Phoenix
85032Phoenix
85033Phoenix
85034Phoenix
85035Phoenix
85037Phoenix
85040Phoenix
85041Phoenix
85042Phoenix
85043Phoenix
85044Phoenix
85045Phoenix
85048Phoenix
85050Phoenix
85051Phoenix
85053Phoenix
85054Phoenix
85083Phoenix
85085Phoenix
85086Phoenix
85087New River
85201Mesa
85202Mesa
85203Mesa
85204Mesa
85205Mesa
85206Mesa
85207Mesa
85208Mesa
85209Mesa
85210Mesa
85212Mesa
85213Mesa
85215Mesa
85224Chandler
85225Chandler
85226Chandler
85233Gilbert
85234Gilbert
85236Gilbert
85248Chandler
85249Chandler
85250Scottsdale
85251Scottsdale
85253Paradise Valley
85254Phoenix
85255Scottsdale
85256Mesa
85257Scottsdale
85258Scottsdale
85259Scottsdale
85260Scottsdale
85262Scottsdale
85263Rio Verde
85264
85266Scottsdale
85268Fountain Hills
85281Tempe
85282Tempe
85283Tempe
85284Tempe
85286Chandler
85295Gilbert
85296Gilbert
85297Gilbert
85298Gilbert
85301Glendale
85302Glendale
85303Glendale
85304Glendale
85305Glendale
85306Glendale
85307Glendale
85308Glendale
85309Glendale
85310Phoenix
85320Aguila
85322Arlington
85323Avondale
85326Buckeye
85329Avondale
85331Cave Creek
85333Dateland
85335El Mirage
85337Gila Bend
85338Goodyear
85339Phoenix
85340Buckeye
85343Buckeye
85345Peoria
85351Sun City
85353Phoenix
85354Buckeye
85355Citrus Park
85361Surprise
85363Youngtown
85373Sun City
85374Surprise
85375Sun City West
85377Carefree
85378Surprise
85379Surprise
85381Peoria
85382Peoria
85383Peoria
85387Surprise
85388Surprise
85390Wickenburg
85392Avondale
85395Goodyear
85396Buckeye

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in 16 of the 44 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter19 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near Maricopa County

All Arizona counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.