Public water system · CO0108375
ActiveCasa Del Rio Subd
At a glance
Casa Del Rio Subd (PWSID CO0108375) is an active community water system in Chaffee County, Colorado. It reports serving 73 people through 53 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 April 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
73
Service connections
53
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Casa Del Rio Subd compare with other water systems in Chaffee County?
By EPA's size categories, Casa Del Rio Subd is a very small system (500 people or fewer). Chaffee County has 68 active public water systems. Its population served is well below the county average of 372 people per system, and accounts for 0.3% of the 25,274 people reported by systems filed under the county. Across Colorado, the 2,207 active systems average 3,400 people each. Nationally, the average active community water system reports serving 6,703 people, so Casa Del Rio Subd 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. Colorado has 1,068 active community water systems, 48% of the state's 2,207 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,437 Colorado systems (65%) list groundwater as their primary source.
Who owns and regulates Casa Del Rio Subd?
EPA lists Casa Del Rio Subd as privately owned. The CO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 53 of the 68 active systems in Chaffee County (78%) are also privately owned.
Does Casa Del Rio Subd have drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in April 2020. The violations listed here began between July 2007 and April 2020. By type: 6 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Combined Radium (-226 and -228), Combined Uranium, Gross alpha (excluding radon and uranium) and Public Notice. 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 |
|---|---|---|---|---|
| 2020-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2020-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2020-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2017-11-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-11-10 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600 | No | Resolved |
| 2009-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | 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.
Casa Del Rio Subd: frequently asked questions
Who runs Casa Del Rio Subd?
Casa Del Rio Subd (PWSID CO0108375) is a community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Casa Del Rio Subd serve?
Casa Del Rio Subd reports serving 73 people through 53 service connections in Chaffee County, Colorado.
Where does Casa Del Rio Subd 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 Casa Del Rio Subd have any drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in April 2020. 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 Casa Del Rio Subd'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 April 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Casa Del Rio Subd's water quality report?
As a community water system, Casa Del Rio Subd 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 Chaffee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Salida City of | Chaffee | 5,666 | Community | Surface water |
| Buena Vista Town of | Chaffee | 3,776 | Community | Groundwater under influence of surface water |
| Monarch Ski Area | Chaffee | 2,500 | Transient non-community | Groundwater |
| Poncha Springs Town of | Chaffee | 2,118 | Community | Groundwater |
| Buena Vista Correctional Facility | Chaffee | 1,700 | Community | Groundwater |
| Noahs Ark Adventure Company | Chaffee | 506 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Casa Del Rio Subd, PWSID CO0108375, Colorado”, https://aquacensus.com/water-systems/colorado/casa-del-rio-subd-co0108375 (data as of October 1, 2026).