Public water system · AZ0413110
ActiveCs Loma Estates Water Company
At a glance
Cs Loma Estates Water Company (PWSID AZ0413110) is an active non-transient non-community water system in Yavapai County, Arizona. It reports serving 92 people through 36 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 7 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
92
Service connections
36
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Cs Loma Estates Water Company compare with other water systems in Yavapai County?
By EPA's size categories, Cs Loma Estates Water Company is a very small system (500 people or fewer). Yavapai County has 238 active public water systems. Its population served is well below the county average of 938 people per system, and accounts for less than 0.1% of the 223,192 people reported by systems filed under the county. Across Arizona, the 1,769 active systems average 4,369 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Cs Loma Estates Water Company is well below that figure.
What does “non-transient non-community water system” mean?
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. Arizona has 232 active non-transient non-community water systems, 13% of the state's 1,769 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,612 Arizona systems (91%) list groundwater as their primary source.
Who owns and regulates Cs Loma Estates Water Company?
EPA lists Cs Loma Estates Water Company 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. 113 of the 238 active systems in Yavapai County (47%) are also privately owned.
Does Cs Loma Estates Water Company have drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between January 1998 and July 2025. By type: 6 monitoring and reporting and 1 reporting. The contaminant or rule involved most often is Nitrate (4 of them). EPA lists 7 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2023-08-19 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2015-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1999-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 7 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.
Cs Loma Estates Water Company: frequently asked questions
Who runs Cs Loma Estates Water Company?
Cs Loma Estates Water Company (PWSID AZ0413110) is a non-transient non-community water system privately owned. It is regulated by the AZ state drinking water program.
How many people does Cs Loma Estates Water Company serve?
Cs Loma Estates Water Company reports serving 92 people through 36 service connections in Yavapai County, Arizona.
Where does Cs Loma Estates Water Company get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Cs Loma Estates Water Company have any drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in July 2025. 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 Cs Loma Estates Water Company'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. EPA's records list 7 violations for this system; none is health-based, and the most recent began in July 2025. For current results, consult EPA ECHO, or the AZ state drinking water program.
Where can I find Cs Loma Estates Water Company's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Cs Loma Estates Water Company is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Yavapai County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Town of Prescott Valley | Yavapai | 57,048 | Community | Groundwater |
| Prescott City of | Yavapai | 42,217 | Community | Groundwater |
| Cottonwood Municipal Water Cw1 | Yavapai | 11,023 | Community | Groundwater |
| Big Park Water Company | Yavapai | 7,392 | Community | Groundwater |
| Town of Camp Verde Utilities | Yavapai | 5,013 | Community | Groundwater |
| Clarkdale Municipal Water System | Yavapai | 4,920 | 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, “Cs Loma Estates Water Company, PWSID AZ0413110, Arizona”, https://aquacensus.com/water-systems/arizona/cs-loma-estates-water-company-az0413110 (data as of October 1, 2026).