Public water system · OR4100513
ActiveMedford Water Commission
At a glance
Medford Water Commission (PWSID OR4100513) is an active community water system in Jackson County, Oregon. It reports serving 106,068 people through 32,319 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; none is health-based, and the most recent began in November 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
106,068
Service connections
32,319
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Medford Water Commission compare with other water systems in Jackson County?
By EPA's size categories, Medford Water Commission is a very large system (more than 100,000 people). Jackson County has 200 active public water systems, and Medford Water Commission is the largest of them by population served. Its population served is about 108 times the county average of 983 people per system, and accounts for 54% of the 196,508 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 Medford Water Commission is about 16 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 Medford Water Commission?
EPA lists Medford Water Commission 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. 32 of the 200 active systems in Jackson County (16%) are also owned by a local government.
Does Medford Water Commission have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in November 2025. The violations listed here began between June 1976 and November 2025. By type: 9 monitoring and reporting, 1 public notice, recordkeeping or other and 1 monitoring. The contaminant or rule involved most often is Groundwater Rule (3 of them). EPA lists 9 as resolved and 2 as archived. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2025-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2025-07-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2025-07-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2025-01-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2019-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2009-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1976-06-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 1976-06-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Archived |
All 11 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.
Medford Water Commission: frequently asked questions
Who runs Medford Water Commission?
Medford Water Commission (PWSID OR4100513) is a community water system owned by a local government. It is regulated by the OR state drinking water program.
How many people does Medford Water Commission serve?
Medford Water Commission reports serving 106,068 people through 32,319 service connections in Jackson County, Oregon.
Where does Medford Water Commission 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 Medford Water Commission have any drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in November 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 Medford Water Commission'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 11 violations for this system; none is health-based, and the most recent began in November 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the OR state drinking water program.
Where can I find Medford Water Commission's water quality report?
As a community water system, Medford Water Commission 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 Jackson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ashland Water Department | Jackson | 20,946 | Community | Surface water |
| Central Point, City of | Jackson | 19,785 | Community | Purchased surface water |
| Eagle Point, City of | Jackson | 9,554 | Community | Purchased surface water |
| Talent, City of | Jackson | 6,293 | Community | Purchased surface water |
| Phoenix, City of | Jackson | 5,900 | Community | Purchased surface water |
| Jacksonville, City of | Jackson | 3,012 | 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, “Medford Water Commission, PWSID OR4100513, Oregon”, https://aquacensus.com/water-systems/oregon/medford-water-commission-or4100513 (data as of October 1, 2026).