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Cochise County, Arizona — public water systems

At a glance

104 active public water systems are filed under Cochise County, Arizona in EPA's SDWIS records, together reporting 130,277 people served. The largest is Bella Vista City Water System, which reports serving 20,045 people. 53 are community water systems serving people where they live; the other 51 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

104

Population served

130.3K

Community systems

53

Groundwater share

99%

How does Cochise County compare with other Arizona counties?

Cochise County has the 6th-most active public water systems among the 56 counties listed for active Arizona systems in EPA records; among the 19 with 3 or more systems, the median has 63. Its systems report 130,277 people served in total, the 8th-largest county figure in the state and 1.7% of the statewide total. The average system here reports serving 1,253 people, well below the Arizona average of 4,369. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Cochise County's drinking water come from?

By primary water source, Cochise County's active systems draw on groundwater (103, 99%) and surface water (1, 1%). Overall, 99% rely mainly on groundwater (including purchased groundwater) and 1% on surface water, compared with 95% and 4.7% across Arizona. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Bella Vista City Water System, draws primarily on groundwater.

What kinds of water systems operate in Cochise County?

Cochise County's active systems break down as 53 community systems (51%), 19 non-transient non-community systems (18%) and 32 transient non-community systems (31%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (44%), public/private partnership (27%), local government (17%) and federal government (7.7%).

The 50 largest water systems in Cochise County

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Active public water systems in Cochise County, Arizona
#Water systemCountyPopulation servedTypeSource
1Bella Vista City Water SystemCochise20,045CommunityGroundwater
2Douglas City ofCochise16,656CommunityGroundwater
3Us Army Fort HuachucaCochise15,603CommunityGroundwater
4Pueblo Del Sol Water CompanyCochise12,804CommunityGroundwater
5Arizona Water Co - Sierra VistaCochise9,175CommunityGroundwater
6Arizona Water Co - BisbeeCochise8,707CommunityGroundwater
7Benson, City of Water SystemCochise5,355CommunityGroundwater
8City of WillcoxCochise3,236CommunityGroundwater
9Bisbee Douglas Intl AirportCochise2,600CommunityGroundwater
10Adot San Simon Rest AreaCochise2,500Transient non-communityGroundwater
11Bella Vista Water SouthCochise2,178CommunityGroundwater
12East Slope Water CompanyCochise1,980CommunityGroundwater
13Town of Huachuca CityCochise1,750CommunityGroundwater
14Pomerene DwidCochise1,618CommunityGroundwater
15Southland Utilities - Golden AcresCochise1,614CommunityGroundwater
16Southern Sunrise Wc Cochise HorseshoeCochise1,588CommunityGroundwater
17Tombstone City ofCochise1,545CommunitySurface water
18Mescal Lakes Water SystemCochise1,390CommunityGroundwater
19Clear Springs Utility MainCochise1,385CommunityGroundwater
20St David DwidCochise1,255CommunityGroundwater
21Cochise County Community College DistricCochise1,120Non-transient non-communityGroundwater
22Adot Texas Canyon Rest AreaCochise1,006Transient non-communityGroundwater
23Whetstone DwidCochise940CommunityGroundwater
24Elfrida WidCochise800CommunityGroundwater
25Apple Annies OrchardCochise675Transient non-communityGroundwater
26Naco Water Co MainCochise658CommunityGroundwater
27East Slope Water - WestCochise655CommunityGroundwater
28Southern Sunrise Wc Miracle ValleyCochise620CommunityGroundwater
29Northern Sunrise Wc CoronadoCochise553CommunityGroundwater
30Bowie WidCochise489CommunityGroundwater
31Aspb Kartchner CavernsCochise483Transient non-communityGroundwater
32Douglas Border Patrol StationCochise450Non-transient non-communityGroundwater
33Coronado ElementaryCochise446Non-transient non-communityGroundwater
34Palominas ElementaryCochise421Non-transient non-communityGroundwater
35Cs Winchester Water CompanyCochise402CommunityGroundwater
36Cs Holiday Water CompanyCochise395CommunityGroundwater
37Sierra Vista Mh VillageCochise328CommunityGroundwater
38Northern Sunrise Wc Mustang CrystalCochise315CommunityGroundwater
39San Simon DwidCochise312CommunityGroundwater
40Fiesta Canning Co Inc.Cochise300Non-transient non-communityGroundwater
41Dragoon Water CompanyCochise283CommunityGroundwater
42Valley View ElementaryCochise231Non-transient non-communityGroundwater
43Chiricahua Natl Monument Bonita CgCochise200Transient non-communityGroundwater
44Fort Bowie National Historic SiteCochise200Transient non-communityGroundwater
45Mountain View Rv ParkCochise200Transient non-communityGroundwater
46Willow Lakes Property Owners AssocCochise190CommunityGroundwater
47Whetstone Ranch Water SystemCochise183CommunityGroundwater
48Adot San Simon Port of EntryCochise175Transient non-communityGroundwater
49Western Refining Speedway 2962Cochise162Transient non-communityGroundwater
50Monte Vista Water CompanyCochise150CommunityGroundwater

All other water systems in Cochise County (54)

The remaining active systems filed under Cochise County, largest first, with the population each reports serving.

Cochise County water systems: frequently asked questions

How many public water systems are in Cochise County, Arizona?

EPA's SDWIS records file 104 active public water systems under Cochise County, Arizona: 53 community systems (51%), 19 non-transient non-community systems (18%) and 32 transient non-community systems (31%).

Who supplies drinking water in Cochise County, AZ?

The largest community water systems filed under Cochise County are Bella Vista City Water System (20,045 people served), City of Douglas (16,656 people served) and Us Army Fort Huachuca (15,603 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Cochise County's drinking water come from groundwater or surface water?

Of the 104 active public water systems in Cochise County, 99% draw mainly on groundwater and 1% on surface water, counting purchased supplies. The largest system, Bella Vista City Water System, uses groundwater.

Where can I find a water quality report for Cochise County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 53 community systems are filed under Cochise County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Cochise County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Arizona water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Cochise County, Arizona”, https://aquacensus.com/water-systems/arizona/cochise (data as of October 1, 2026).