Public water system · ND5300809
ActiveRay City of
At a glance
City of Ray (PWSID ND5300809) is an active community water system in Williams County, North Dakota. It reports serving 950 people through 491 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in January 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
950
Service connections
491
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does City of Ray compare with other water systems in Williams County?
By EPA's size categories, City of Ray is a small system (501 to 3,300 people). Williams County has 19 active public water systems, and City of Ray is the 5th-largest of them by population served. Its population served is about half of the county average of 1,990 people per system, and accounts for 2.5% of the 37,806 people reported by systems filed under the county. Across North Dakota, the 403 active systems average 1,864 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Ray 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. North Dakota has 317 active community water systems, 79% of the state's 403 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 83 North Dakota systems (21%) list purchased surface water as their primary source.
Who owns and regulates City of Ray?
EPA lists City of Ray as owned by a local government. The ND 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 19 active systems in Williams County (42%) are also owned by a local government.
Does City of Ray have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in January 2022. By type: 1 monitoring and reporting. The contaminant or rule involved is Chloramine. EPA lists 1 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 |
|---|---|---|---|---|
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloraminecode 1006 | No | Resolved |
The one violation in EPA's records.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 Ray: frequently asked questions
Who runs City of Ray?
City of Ray (PWSID ND5300809) is a community water system owned by a local government. It is regulated by the ND state drinking water program.
How many people does City of Ray serve?
City of Ray reports serving 950 people through 491 service connections in Williams County, North Dakota.
Where does City of Ray get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does City of Ray have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in January 2022. 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 Ray'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 one violation for this system; it is not health-based, and the most recent began in January 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the ND state drinking water program.
Where can I find City of Ray's water quality report?
As a community water system, City of Ray 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 Williams County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Williston City of | Williams | 26,426 | Community | Surface water |
| Northwest Rural Water District | Williams | 5,102 | Community | Purchased surface water |
| Tioga City of | Williams | 2,202 | Community | Purchased surface water |
| R & T Water System | Williams | 1,003 | Community | Purchased surface water |
| Trenton Water Users Assoc | Williams | 840 | Community | Purchased surface water |
| Inspire Communities-Springbrook | Williams | 300 | 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, “Ray City of, PWSID ND5300809, North Dakota”, https://aquacensus.com/water-systems/north-dakota/ray-city-of-nd5300809 (data as of October 1, 2026).