Public water system · UTAH27051
ActiveZion Canyon Water System
At a glance
Zion Canyon Water System (PWSID UTAH27051) is an active community water system in Washington County, Utah. It reports serving 3,380 people through 47 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,380
Service connections
47
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Zion Canyon Water System compare with other water systems in Washington County?
By EPA's size categories, Zion Canyon Water System is a medium system (3,301 to 10,000 people). Washington County has 59 active public water systems. Its population served is about 18% below the county average of 4,138 people per system, and accounts for 1.4% of the 244,151 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 Zion Canyon Water System is about half of 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 898 Utah systems (79%) list groundwater as their primary source.
Who owns and regulates Zion Canyon Water System?
EPA lists Zion Canyon Water System as owned by the federal 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. 6 of the 59 active systems in Washington County (10%) are also owned by the federal government.
Does Zion Canyon Water System have drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in December 2025. The violations listed here began between January 1986 and December 2025. By type: 4 monitoring and reporting, 2 monitoring, 2 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 6 as archived and 3 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 |
|---|---|---|---|---|
| 2025-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2017-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-10-01 | Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2011-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross Beta Particle Activitycode 4100 | No | Archived |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 1993-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1993-09-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1986-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 9 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.
Zion Canyon Water System: frequently asked questions
Who runs Zion Canyon Water System?
Zion Canyon Water System (PWSID UTAH27051) is a community water system owned by the federal government. It is regulated by the UT state drinking water program.
How many people does Zion Canyon Water System serve?
Zion Canyon Water System reports serving 3,380 people through 47 service connections in Washington County, Utah.
Where does Zion Canyon Water System 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 Zion Canyon Water System have any drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in December 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 Zion Canyon Water System'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 9 violations for this system; 1 is health-based, and the most recent began in December 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the UT state drinking water program.
Where can I find Zion Canyon Water System's water quality report?
As a community water system, Zion Canyon Water System 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 Washington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| St George City Water System | Washington | 105,240 | Community | Purchased surface water |
| Washington City | Washington | 45,865 | Community | Surface water |
| Hurricane City | Washington | 25,555 | Community | Purchased surface water |
| Utah Tech Culinary Water System | Washington | 12,000 | Non-transient non-community | Purchased surface water |
| Ivins | Washington | 10,465 | Community | Purchased surface water |
| Santa Clara City | Washington | 9,000 | Community | Purchased 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, “Zion Canyon Water System, PWSID UTAH27051, Utah”, https://aquacensus.com/water-systems/utah/zion-canyon-water-system-utah27051 (data as of October 1, 2026).