Public water system · AZ0406005
ActiveCs Loma Linda Water Company
At a glance
Cs Loma Linda Water Company (PWSID AZ0406005) is an active community water system in Greenlee County, Arizona. It reports serving 351 people through 137 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
351
Service connections
137
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cs Loma Linda Water Company compare with other water systems in Greenlee County?
By EPA's size categories, Cs Loma Linda Water Company is a very small system (500 people or fewer). Greenlee County has 11 active public water systems, and Cs Loma Linda Water Company is the 6th-largest of them by population served. Its population served is about half of the county average of 743 people per system, and accounts for 4.3% of the 8,173 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 Cs Loma Linda Water Company 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. 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 Linda Water Company?
EPA lists Cs Loma Linda 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. 4 of the 11 active systems in Greenlee County (36%) are also privately owned.
Does Cs Loma Linda Water Company have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2025. The violations listed here began between December 2021 and July 2025. By type: 5 monitoring and reporting, 2 reporting, 2 monitoring, 2 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Revised Total Coliform Rule (3 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2025-02-20 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2024-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2022-02-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-12-10 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2021-12-10 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | 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.
Cs Loma Linda Water Company: frequently asked questions
Who runs Cs Loma Linda Water Company?
Cs Loma Linda Water Company (PWSID AZ0406005) is a community water system privately owned. It is regulated by the AZ state drinking water program.
How many people does Cs Loma Linda Water Company serve?
Cs Loma Linda Water Company reports serving 351 people through 137 service connections in Greenlee County, Arizona.
Where does Cs Loma Linda 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 Linda Water Company have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are 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 Linda 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. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the AZ state drinking water program.
Where can I find Cs Loma Linda Water Company's water quality report?
As a community water system, Cs Loma Linda Water Company 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 Greenlee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Morenci Water Elec Co Main | Greenlee | 4,108 | Community | Surface water |
| Morenci Water Elec Co Clifton | Greenlee | 1,678 | Community | Groundwater |
| Duncan Town of | Greenlee | 605 | Community | Groundwater |
| Cs Verde Lee Water Company | Greenlee | 604 | Community | Groundwater |
| Duncan Elementary School | Greenlee | 450 | Non-transient non-community | Purchased groundwater |
| Valley View Mhc & Rv Park | Greenlee | 142 | 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 Linda Water Company, PWSID AZ0406005, Arizona”, https://aquacensus.com/water-systems/arizona/cs-loma-linda-water-company-az0406005 (data as of October 1, 2026).