Tap Truth EPA drinking water records, in plain English

County drinking water records

Maricopa County, AZ drinking water systems

101 community water systems serve Maricopa County, AZ, reporting 4,414,529 people served in all. A system that also serves other counties counts all of its customers here.

39 of them (39%) had at least one health-based violation in the last 10 years. 32 systems still have one unresolved.

79 rely mainly on groundwater and 22 on surface water, counting water bought from other systems.

96 systems filed a lead service line inventory listing 0 lead lines, 614 galvanized lines that must be replaced and 326,277 lines of unknown material.

11 more systems are placed in Maricopa County, AZ by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
101
People served, sum of each system's own figure
4,414,529
Systems with a health-based violation, last 10 years
39
Systems with one unresolved
32
Lead service lines in inventories
0

Water systems serving Maricopa County

101 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of Phoenix Phoenix and Paradise Valley 1,695,000 Surface water 1 0 0
City of Mesa Mesa 466,000 Surface water 0 0 0
Town of Gilbert Gilbert 247,600 Surface water 3 0 0
City of Chandler Chandler 247,328 Surface water 1 0 0
City of Scottsdale Scottsdale 241,361 Surface water 0 0 0
City of Glendale Glendale 234,766 Surface water 0 0 0
City of Peoria Peoria 187,676 Surface water 1 0 0
City of Tempe Tempe and Guadalupe 165,000 Surface water 2 0 0
Epcor - Agua Fria Surprise, Buckeye and 3 more 127,718 Surface water 1 0 0
Town of Queen Creek Queen Creek and San Tan Valley 95,502 Groundwater 0 0 0
City of Avondale Avondale 83,001 Purchased surface water 0 0 0
Liberty Water Lpsco Goodyear, Litchfield Park and 1 more 55,810 Groundwater 1 0 0
Goodyear Water Department Goodyear 50,001 Surface water 0 0 0
Surprise City of - Mountain Vista Surprise 40,007 Groundwater 0 0 0
City of El Mirage El Mirage and Surprise 39,884 Groundwater 0 1 0
Epcor - Sun City Sun City, Youngtown and 1 more 38,016 Groundwater 0 0 0
City of Buckeye - Valencia Town Division Buckeye 30,377 Groundwater 0 2 0
Epcor - Chaparral City Fountain Hills and Scottsdale 26,026 Surface water 1 0 0
Epcor - Sun City West Sun City West 25,796 Groundwater 0 0 0
Desert Oasis Surprise 23,963 Groundwater 0 0 0
Epcor - Anthem Anthem 23,826 Surface water 1 1 0
Gric DPW Wild Horse Pass St. Johns, Gila Crossing and 1 more 22,795 Groundwater 2 1 0
Salt River Public Works Outside cities and towns 20,951 Groundwater 1 0 0
Pima Utilities Sun Lakes and Chandler 20,000 Groundwater 2 3 0
Arizona Water Co - White Tanks Buckeye and Goodyear and land outside them 18,858 Purchased surface water 0 0 0
City of Buckeye Sonora - Sundance Buckeye 15,783 Groundwater 0 0 0
Epcor - North East Agua Fria Sun City West, Surprise and 1 more and land outside them 14,723 Groundwater 0 0 0
Epcor - Paradise Valley/Scottsdale Paradise Valley and Scottsdale 14,107 Purchased surface water 0 0 0
Festival Ranch Buckeye 10,313 Groundwater 0 0 0
Beardsley Water Company 1 Surprise 10,263 Groundwater 0 0 0
City of Buckeye Tartesso Water System Buckeye 10,123 Groundwater 0 0 0
City of Tolleson Tolleson and Phoenix 9,300 Purchased surface water 0 1 0
Usaf Luke Air Force Base Glendale and Litchfield Park 8,440 Purchased surface water 2 0 0
Fort McDowell Community Outside cities and towns 7,260 Groundwater 4 0 0
City of Buckeye Buckeye 7,008 Groundwater 0 1 0
Sunrise Water Company Peoria 6,490 Groundwater 0 0 0
Town of Wickenburg Wickenburg 6,481 Groundwater 0 2 0
Rose Valley Water Company Peoria and Phoenix 6,202 Groundwater 0 0 0
Valley Utilities Water Company Glendale Glendale and land outside it 5,940 Groundwater 0 0 0
Cave Creek Water Cave Creek, Carefree and 1 more 5,895 Surface water 4 0 0
Epcor- Rio Verde Rio Verde 5,330 Groundwater 0 0 0
Epcor - Tierra Del Rio Phoenix and Peoria 4,868 Groundwater 0 0 0
Aspc Lewis Complex Water System Buckeye 4,300 Groundwater 3 2 0
Desert Hills Water New River and Cave Creek 4,220 Purchased surface water 0 0 0
Carefree Water Company Carefree 3,894 Purchased surface water 0 0 0
Chandler Heights Citrus Irrigation Dist Chandler and land outside it 2,620 Groundwater 0 3 0
Clearwater Utility Company Inc Buckeye and land outside it 2,175 Groundwater 2 2 0
Town of Gila Bend Gila Bend and Buckeye 1,922 Groundwater 0 1 0
Federal Correction Institution Phoenix 1,500 Groundwater 7 0 0
Berneil Water Company Paradise Valley 1,388 Groundwater 0 0 0
VWC Buckeye Division Sun Valley Buckeye and land outside it 1,378 Groundwater 0 0 0
West End Water Company - Wittman Surprise and Wittmann and land outside them 1,200 Groundwater 0 0 0
Aguila Water Service Aguila and land outside it 987 Groundwater 0 2 0
Chaparral Water Company Wittmann and land outside it 963 Groundwater 0 0 0
Circle City - City of Surprise Circle City and land outside it 815 Groundwater 0 0 0
Patton Place Estates Outside cities and towns 795 Groundwater 0 0 0
Adaman Mutual Water Company Glendale and land outside it 700 Groundwater 3 2 No inventory
Adjc Adobe Mountain School Phoenix 680 Groundwater 1 0 0
Salt River Lehi Outside cities and towns 652 Purchased surface water 0 0 0
GW -BWC, Inc- Sunshine Tonopah and land outside it 604 Groundwater 1 0 0
Pioneer RV Resort Outside cities and towns 583 Groundwater 0 0 0
Peak View Ranch Surprise and land outside it 508 Groundwater 0 1 0
Orangewood Mobile Home Park Phoenix 500 Groundwater 2 0 0
Country Club Acres Water Inc Wickenburg 431 Groundwater 2 0 0
GW -BWC, Inc- Buckeye Ranch Tonopah and land outside it 422 Groundwater 0 0 0
Mobile Gardens DWID Wittmann and land outside it 400 Groundwater 1 1 0
Saguaro View MGMT Company Surprise 400 Groundwater 0 0 0
Michigan Trailer Park Phoenix 400 Groundwater 0 2 0
Tonto Hills DWID Outside cities and towns 350 Purchased surface water 0 1 0
Shangri La Ranch New River 345 Groundwater 17 2 0
GW -BWC, Inc.- NSWC Scottsdale and land outside it 319 Groundwater 0 0 0
Country Home MHP Buckeye 300 Groundwater 1 3 No inventory
Hacienda Del Sol MHP Outside cities and towns 300 Groundwater 1 1 0
GW -BWC, Inc- Eagletail Outside cities and towns 288 Groundwater 0 0 0
VWC Buckeye Div Bulfer Primrose Buckeye and land outside it 280 Groundwater 0 1 0
Saguaro Acres CFD Surprise 175 Groundwater 1 2 No inventory
Hopeville Water System Buckeye and land outside it 145 Groundwater 0 0 0
GW- BWC, Inc- Dixie Tonopah and land outside it 132 Groundwater 0 0 0
Morristown Water Company Morristown 131 Groundwater 0 0 0
Paloma Ranch Theba 112 Groundwater 0 0 0
Salt River North Mesa Outside cities and towns 100 Groundwater 0 0 0
Caballeros Water Company Wickenburg and land outside it 100 Groundwater 1 0 0
Peekaboo Water Coop Chandler and land outside it 100 Groundwater 2 0 0
Beardsley Water Company 3 Phoenix and land outside it 96 Groundwater 0 0 0
Gilbert Rigg Well Coop Chandler and land outside it 95 Groundwater 0 1 0
Triple G Dairy Buckeye and land outside it 84 Groundwater 0 0 0
Sontel Water Coop Gilbert 80 Groundwater 1 2 0
Two Tanks Community Well Surprise and land outside it 76 Groundwater 3 4 0
Belmont Mountain Dairy Tonopah and land outside it 72 Groundwater 1 0 0
Buckeye Acres MHP Buckeye and land outside it 71 Groundwater 0 1 0
GW -BWC, Inc.- Wpe #6 Tonopah and land outside it 69 Groundwater 0 0 0
GW- BWC, Inc- Roseview Tonopah and land outside it 66 Groundwater 0 0 0
Valley View Water Company Tonopah and land outside it 60 Groundwater 1 1 0
Rancho Wells Inc Surprise 59 Groundwater 1 0 0
West End Water Company - Wheat Wittmann and land outside it 55 Groundwater 0 0 0
Greenfield Ranchettes Chandler and land outside it 53 Groundwater 7 1 0
GW- BWC, Inc- Garden City Outside cities and towns 51 Groundwater 0 0 0
Grandview Water Company Outside cities and towns 50 Groundwater 8 1 0
67 Ave Property Owners Association Phoenix and land outside it 40 Groundwater 2 7 No inventory
Olive Avenue HOA Glendale and land outside it 25 Groundwater 0 0 0
G Lazy B Mobile Home Park Wickenburg and land outside it 25 Groundwater 1 3 No inventory

Systems placed by county record in Maricopa County

11 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Gric DPW Sacaton County on record 5,307 Groundwater 1 1 0
Gric DPW Casa Blanca_bapchule County on record 2,603 Groundwater 1 1 0
Gric DPW Stotonic County on record 2,566 Purchased groundwater 1 1 0
Trillium Water System County on record 1,100 Groundwater 0 0 No inventory
Surprise, City of Buena Vista County on record 520 Groundwater 0 0 No inventory
Tocc County on record 280 Groundwater 0 0 0
Kaka County on record 150 Groundwater 0 1 0
Apache Lake Marina Resort County on record 123 Surface water 4 0 0
White Tank Well Inc County on record 87 Groundwater 0 0 0
Salt River Landfill County on record 38 Groundwater 0 0 0
Gric DPW Aerodyne County on record 35 Purchased groundwater 1 1 0

Cities and towns in Maricopa County

41 places

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Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations