Public water system · AZ0407026

Active

Desert Hills Water

At a glance

Desert Hills Water (PWSID AZ0407026) is an active community water system in Maricopa County, Arizona. It reports serving 4,220 people through 1,838 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2018.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

4,220

Service connections

1,838

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSIDAZ0407026

System typeCommunity water system

Activity statusActive

Population served4,220

Service connections1,838

Primary water sourcePurchased surface water

Owner typePrivate

Primacy agencyAZ state drinking water program

City servedCave Creek

StateArizona

ZIP—

CountyMaricopa County

How does Desert Hills Water compare with other water systems in Maricopa County?

By EPA's size categories, Desert Hills Water is a medium system (3,301 to 10,000 people). Maricopa County has 217 active public water systems. Its population served is well below the county average of 20,368 people per system, and accounts for less than 0.1% of the 4,419,761 people reported by systems filed under the county. Across Arizona, the 1,769 active systems average 4,369 people each. Nationally, the average active community water system reports serving 6,703 people, so Desert Hills Water is about 37% below that figure.

What does “community water system” mean?

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. Arizona has 936 active community water systems, 53% of the state's 1,769 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 22 Arizona systems (1.2%) list purchased surface water as their primary source.

Who owns and regulates Desert Hills Water?

EPA lists Desert Hills Water as privately owned. The AZ state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 89 of the 217 active systems in Maricopa County (41%) are also privately owned.

Does Desert Hills Water have drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2018. The violations listed here began between July 2016 and September 2018. By type: 9 monitoring and reporting, 2 public notice, recordkeeping or other and 1 reporting. The contaminant or rule involved most often is Chlorine (4 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.

Began	Violation	Contaminant or rule	Health-based	Status
2018-09-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2018-09-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2018-07-01	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2018-07-01	Monitoring and reportingMonitoring, Regular · code 03	Arseniccode 1005	No	Resolved
2017-11-03	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2017-07-01	Monitoring and reportingMonitoring, Regular · code 03	Arseniccode 1005	No	Resolved
2017-04-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2017-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2016-10-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved
2016-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2016-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2016-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved

The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Desert Hills Water: frequently asked questions

Who runs Desert Hills Water?

Desert Hills Water (PWSID AZ0407026) is a community water system privately owned. It is regulated by the AZ state drinking water program.

How many people does Desert Hills Water serve?

Desert Hills Water reports serving 4,220 people through 1,838 service connections in Maricopa County, Arizona.

Where does Desert Hills Water get its water?

EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.

Does Desert Hills Water have any drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2018. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Desert Hills Water's water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the AZ state drinking water program.

Where can I find Desert Hills Water's water quality report?

As a community water system, Desert Hills Water must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Maricopa County

Water system	County	Population served	Type	Source
Phoenix City of	Maricopa	1,695,000	Community	Surface water
Mesa City of	Maricopa	466,000	Community	Surface water
Gilbert, Town of	Maricopa	247,600	Community	Surface water
Chandler City of	Maricopa	247,328	Community	Surface water
Scottsdale City of	Maricopa	241,361	Community	Surface water
Glendale City of	Maricopa	234,766	Community	Surface water

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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, “Desert Hills Water, PWSID AZ0407026, Arizona”, https://aquacensus.com/water-systems/arizona/desert-hills-water-az0407026 (data as of October 1, 2026).