Public water system · CO0115724
ActiveStewart Mesa Wc
At a glance
Stewart Mesa Wc (PWSID CO0115724) is an active community water system in Delta County, Colorado. It reports serving 250 people through 76 service connections. Its primary water source is purchased groundwater under influence, 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 January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
250
Service connections
76
Primary source
GUP
Purchased groundwater under influence
System type
CWS
Community water system
System record
How does Stewart Mesa Wc compare with other water systems in Delta County?
By EPA's size categories, Stewart Mesa Wc is a very small system (500 people or fewer). Delta County has 42 active public water systems. Its population served is about 62% below the county average of 660 people per system, and accounts for 0.9% of the 27,718 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 Stewart Mesa Wc 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. Purchased groundwater under the influence of surface water means the system buys that kind of water from another public water system. 5 Colorado systems (0.2%) list purchased groundwater under influence as their primary source.
Who owns and regulates Stewart Mesa Wc?
EPA lists Stewart Mesa Wc 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. 30 of the 42 active systems in Delta County (71%) are also privately owned.
Does Stewart Mesa Wc have drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in January 2025. The violations listed here began between January 2014 and January 2025. By type: 5 monitoring and reporting, 1 reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Surface Water Treatment Rule, Chlorine, Revised Total Coliform Rule and Consumer Confidence Rule. 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 |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2025-01-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2014-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | 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.
Stewart Mesa Wc: frequently asked questions
Who runs Stewart Mesa Wc?
Stewart Mesa Wc (PWSID CO0115724) is a community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Stewart Mesa Wc serve?
Stewart Mesa Wc reports serving 250 people through 76 service connections in Delta County, Colorado.
Where does Stewart Mesa Wc get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater under influence. Purchased groundwater under the influence of surface water means the system buys that kind of water from another public water system.
Does Stewart Mesa Wc have any drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in January 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 Stewart Mesa Wc'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 January 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Stewart Mesa Wc's water quality report?
As a community water system, Stewart Mesa Wc 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 Delta County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Delta City of | Delta | 8,700 | Community | Purchased surface water |
| Orchard City Town of | Delta | 3,100 | Community | Groundwater under influence of surface water |
| Upper Surface Creek Domestic Wua | Delta | 2,800 | Community | Surface water |
| Paonia Town of | Delta | 2,499 | Community | Groundwater under influence of surface water |
| Cedaredge Town of | Delta | 2,400 | Community | Surface water |
| Hotchkiss Town of | Delta | 2,050 | Community | Surface water |
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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, “Stewart Mesa Wc, PWSID CO0115724, Colorado”, https://aquacensus.com/water-systems/colorado/stewart-mesa-wc-co0115724 (data as of October 1, 2026).