Public water system · CO0153600
ActiveMonte Vista City of
At a glance
City of Monte Vista (PWSID CO0153600) is an active community water system in Rio Grande County, Colorado. It reports serving 4,600 people through 2,000 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; all are health-based, and the most recent began in May 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,600
Service connections
2,000
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Monte Vista compare with other water systems in Rio Grande County?
By EPA's size categories, City of Monte Vista is a medium system (3,301 to 10,000 people). Rio Grande County has 48 active public water systems, and City of Monte Vista is the largest of them by population served. Its population served is about 16 times the county average of 289 people per system, and accounts for 33% of the 13,885 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 City of Monte Vista is about 31% 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 City of Monte Vista?
EPA lists City of Monte Vista as owned by a local government. 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. 7 of the 48 active systems in Rio Grande County (15%) are also owned by a local government.
Does City of Monte Vista have drinking water violations?
EPA's records list 4 violations for this system; all are health-based, and the most recent began in May 2009. The violations listed here began between April 2003 and May 2009. By type: 4 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2009-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2005-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2003-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2003-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 4 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.
City of Monte Vista: frequently asked questions
Who runs City of Monte Vista?
City of Monte Vista (PWSID CO0153600) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does City of Monte Vista serve?
City of Monte Vista reports serving 4,600 people through 2,000 service connections in Rio Grande County, Colorado.
Where does City of Monte Vista 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 City of Monte Vista have any drinking water violations?
EPA's records list 4 violations for this system; all are health-based, and the most recent began in May 2009. 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 City of Monte Vista'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 4 violations for this system; all are health-based, and the most recent began in May 2009. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find City of Monte Vista's water quality report?
As a community water system, City of Monte Vista 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 Rio Grande County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Fun Valley Resort | Rio Grande | 1,723 | Transient non-community | Groundwater |
| Del Norte Town of | Rio Grande | 1,429 | Community | Groundwater |
| South Fork Rickel Park | Rio Grande | 804 | Transient non-community | Groundwater |
| South Fork West Municipal Town of | Rio Grande | 566 | Community | Groundwater |
| Sargent Elem and New High School Re33 | Rio Grande | 426 | Non-transient non-community | Groundwater |
| Worth the Drive Bakery | Rio Grande | 392 | Transient non-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, “Monte Vista City of, PWSID CO0153600, Colorado”, https://aquacensus.com/water-systems/colorado/monte-vista-city-of-co0153600 (data as of October 1, 2026).