Public water system · AZ0414073
ActiveCs Rancheros Bonitos Water Company
At a glance
Cs Rancheros Bonitos Water Company (PWSID AZ0414073) is an active community water system in Yuma County, Arizona. It reports serving 120 people through 47 service connections. Its primary water source is groundwater, and EPA lists it as under public/private ownership. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
120
Service connections
47
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cs Rancheros Bonitos Water Company compare with other water systems in Yuma County?
By EPA's size categories, Cs Rancheros Bonitos Water Company is a very small system (500 people or fewer). Yuma County has 50 active public water systems. Its population served is well below the county average of 4,392 people per system, and accounts for less than 0.1% of the 219,583 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 Rancheros Bonitos 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 Rancheros Bonitos Water Company?
EPA lists Cs Rancheros Bonitos Water Company as under public/private ownership. 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. 14 of the 50 active systems in Yuma County (28%) are also under public/private ownership.
Does Cs Rancheros Bonitos Water Company have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in January 2026. The violations listed here began between April 2024 and January 2026. By type: 6 contaminant level above the legal limit, 3 monitoring and reporting and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Combined Uranium (9 of them). EPA lists 6 as archived and 6 as resolved. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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 |
|---|---|---|---|---|
| 2026-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Uraniumcode 4006 | Yes | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2025-09-04 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Uraniumcode 4006 | Yes | Archived |
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Uraniumcode 4006 | Yes | Archived |
| 2025-03-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Uraniumcode 4006 | Yes | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2024-11-24 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2024-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Uraniumcode 4006 | Yes | Archived |
| 2024-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Uraniumcode 4006 | Yes | Archived |
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 Rancheros Bonitos Water Company: frequently asked questions
Who runs Cs Rancheros Bonitos Water Company?
Cs Rancheros Bonitos Water Company (PWSID AZ0414073) is a community water system under public/private ownership. It is regulated by the AZ state drinking water program.
How many people does Cs Rancheros Bonitos Water Company serve?
Cs Rancheros Bonitos Water Company reports serving 120 people through 47 service connections in Yuma County, Arizona.
Where does Cs Rancheros Bonitos 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 Rancheros Bonitos Water Company have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in January 2026. 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 Rancheros Bonitos 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, 6 are health-based, and the most recent began in January 2026. 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 Rancheros Bonitos Water Company's water quality report?
As a community water system, Cs Rancheros Bonitos 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 Yuma County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Yuma | Yuma | 103,264 | Community | Surface water |
| San Luis City of | Yuma | 39,705 | Community | Groundwater |
| Foothills Water and Sewer LLC | Yuma | 32,425 | Community | Surface water |
| Somerton City of | Yuma | 14,197 | Community | Groundwater |
| Usmc Yuma Main System | Yuma | 8,353 | Community | Surface water |
| Aspc Yuma | Yuma | 4,197 | 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 Rancheros Bonitos Water Company, PWSID AZ0414073, Arizona”, https://aquacensus.com/water-systems/arizona/cs-rancheros-bonitos-water-company-az0414073 (data as of October 1, 2026).