Public water system · OR4100497
ActiveMcminnville Water & Light
At a glance
Mcminnville Water & Light (PWSID OR4100497) is an active community water system in Yamhill County, Oregon. It reports serving 34,515 people through 12,038 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 April 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
34,515
Service connections
12,038
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Mcminnville Water & Light compare with other water systems in Yamhill County?
By EPA's size categories, Mcminnville Water & Light is a large system (10,001 to 100,000 people). Yamhill County has 91 active public water systems, and Mcminnville Water & Light is the largest of them by population served. Its population served is about 35 times the county average of 998 people per system, and accounts for 38% of the 90,787 people reported by systems filed under the county. Across Oregon, the 2,536 active systems average 1,587 people each. Nationally, the average active community water system reports serving 6,703 people, so Mcminnville Water & Light is about 5.1 times 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. Oregon has 940 active community water systems, 37% of the state's 2,536 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 211 Oregon systems (8.3%) list surface water as their primary source.
Who owns and regulates Mcminnville Water & Light?
EPA lists Mcminnville Water & Light as owned by a local government. The OR state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 17 of the 91 active systems in Yamhill County (19%) are also owned by a local government.
Does Mcminnville Water & Light have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2024. The violations listed here began between January 2002 and April 2024. By type: 11 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Surface Water Treatment Rule (2 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 |
|---|---|---|---|---|
| 2024-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-10-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2019-10-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2019-10-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dibromo-3-chloropropane (DBCP)code 2931 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toxaphenecode 2020 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Alachlor (Lasso)code 2051 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Methoxychlorcode 2015 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dinosebcode 2041 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbofurancode 2046 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Oxamylcode 2036 | 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.
Mcminnville Water & Light: frequently asked questions
Who runs Mcminnville Water & Light?
Mcminnville Water & Light (PWSID OR4100497) is a community water system owned by a local government. It is regulated by the OR state drinking water program.
How many people does Mcminnville Water & Light serve?
Mcminnville Water & Light reports serving 34,515 people through 12,038 service connections in Yamhill County, Oregon.
Where does Mcminnville Water & Light 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 Mcminnville Water & Light 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 April 2024. 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 Mcminnville Water & Light'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 April 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the OR state drinking water program.
Where can I find Mcminnville Water & Light's water quality report?
As a community water system, Mcminnville Water & Light 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 Yamhill County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Newberg, City of | Yamhill | 25,138 | Community | Groundwater |
| Sheridan, City of | Yamhill | 6,494 | Community | Surface water |
| Lafayette, City of | Yamhill | 4,423 | Community | Purchased surface water |
| Dundee, City of | Yamhill | 2,960 | Community | Groundwater |
| Dayton, City of | Yamhill | 2,535 | Community | Groundwater |
| Carlton, City of | Yamhill | 2,270 | 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, “Mcminnville Water & Light, PWSID OR4100497, Oregon”, https://aquacensus.com/water-systems/oregon/mcminnville-water-light-or4100497 (data as of October 1, 2026).