Public water system · UTAH19004
ActiveMonticello City
At a glance
Monticello City (PWSID UTAH19004) is an active community water system in San Juan County, Utah. It reports serving 2,393 people through 940 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,393
Service connections
940
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Monticello City compare with other water systems in San Juan County?
By EPA's size categories, Monticello City is a small system (501 to 3,300 people). San Juan County has 27 active public water systems, and Monticello City is the 2nd-largest of them by population served. Its population served is about 6.8 times the county average of 350 people per system, and accounts for 25% of the 9,455 people reported by systems filed under the county. Across Utah, the 1,133 active systems average 3,458 people each. Nationally, the average active community water system reports serving 6,703 people, so Monticello City is about 64% 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. Utah has 540 active community water systems, 48% of the state's 1,133 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 45 Utah systems (4%) list surface water as their primary source.
Who owns and regulates Monticello City?
EPA lists Monticello City as owned by a local government. The UT state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 8 of the 27 active systems in San Juan County (30%) are also owned by a local government.
Does Monticello City have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2020. The violations listed here began between July 2016 and May 2020. By type: 8 monitoring and reporting, 2 monitoring and 2 reporting. The contaminant or rule involved most often is Surface Water Treatment Rule (6 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 |
|---|---|---|---|---|
| 2020-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-09-03 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-09-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2017-08-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2017-06-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2017-05-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2017-04-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2017-03-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2017-03-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2016-07-05 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | 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.
Monticello City: frequently asked questions
Who runs Monticello City?
Monticello City (PWSID UTAH19004) is a community water system owned by a local government. It is regulated by the UT state drinking water program.
How many people does Monticello City serve?
Monticello City reports serving 2,393 people through 940 service connections in San Juan County, Utah.
Where does Monticello City get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Monticello City have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 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 Monticello City'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, none is health-based, and the most recent began in May 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the UT state drinking water program.
Where can I find Monticello City's water quality report?
As a community water system, Monticello City 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 San Juan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Blanding City | San Juan | 3,760 | Community | Surface water |
| San Juan Spanish Valley Ssd | San Juan | 550 | Community | Groundwater |
| Bluff Water Works Service District | San Juan | 430 | Community | Groundwater |
| Canyonlands Np - Needles District Hq | San Juan | 406 | Transient non-community | Groundwater |
| Blue Mountain Ranch Recreation | San Juan | 300 | Transient non-community | Groundwater |
| Devils Canyon Campground | San Juan | 210 | 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, “Monticello City, PWSID UTAH19004, Utah”, https://aquacensus.com/water-systems/utah/monticello-city-utah19004 (data as of October 1, 2026).