Public water system · AZ0415497
ActiveEhrenberg Improvement District
At a glance
Ehrenberg Improvement District (PWSID AZ0415497) is an active community water system in La Paz County, Arizona. It reports serving 989 people through 318 service connections. Its primary water source is 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 August 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
989
Service connections
318
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Ehrenberg Improvement District compare with other water systems in La Paz County?
By EPA's size categories, Ehrenberg Improvement District is a small system (501 to 3,300 people). La Paz County has 84 active public water systems. Its population served is about 171% above the county average of 365 people per system, and accounts for 3.2% of the 30,640 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 Ehrenberg Improvement District is well 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 61 Arizona systems (3.4%) list surface water as their primary source.
Who owns and regulates Ehrenberg Improvement District?
EPA lists Ehrenberg Improvement District 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. 40 of the 84 active systems in La Paz County (48%) are also privately owned.
Does Ehrenberg Improvement District have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in August 2024. The violations listed here began between October 2018 and August 2024. By type: 11 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Chlorine (5 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 |
|---|---|---|---|---|
| 2024-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2023-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2023-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2022-10-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2022-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2021-05-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2020-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2020-12-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2020-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2018-10-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | E. colicode 3014 | 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.
Ehrenberg Improvement District: frequently asked questions
Who runs Ehrenberg Improvement District?
Ehrenberg Improvement District (PWSID AZ0415497) is a community water system privately owned. It is regulated by the AZ state drinking water program.
How many people does Ehrenberg Improvement District serve?
Ehrenberg Improvement District reports serving 989 people through 318 service connections in La Paz County, Arizona.
Where does Ehrenberg Improvement District get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Ehrenberg Improvement District 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 August 2024. 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 Ehrenberg Improvement District'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 August 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the AZ state drinking water program.
Where can I find Ehrenberg Improvement District's water quality report?
As a community water system, Ehrenberg Improvement District 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 La Paz County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Quartzsite Town of | La Paz | 2,761 | Community | Groundwater |
| Blm Laposa Ltva | La Paz | 2,500 | Transient non-community | Groundwater |
| Epcor - Lakeside | La Paz | 1,775 | Community | Surface water |
| Cs Harrisburg Utility Company | La Paz | 1,759 | Community | Groundwater |
| Epcor - Moovalya Keys | La Paz | 1,298 | Community | Surface water |
| Cs Q Mountain Water Company | La Paz | 1,224 | Community | Groundwater |
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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, “Ehrenberg Improvement District, PWSID AZ0415497, Arizona”, https://aquacensus.com/water-systems/arizona/ehrenberg-improvement-district-az0415497 (data as of October 1, 2026).