Public water system · OR4100557

Active

Newberg, City of

At a glance

City of Newberg (PWSID OR4100557) is an active community water system in Yamhill County, Oregon. It reports serving 25,138 people through 7,656 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2021.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

25,138

Service connections

7,656

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDOR4100557

System typeCommunity water system

Activity statusActive

Population served25,138

Service connections7,656

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyOR state drinking water program

City served—

StateOregon

ZIP—

CountyYamhill County

How does City of Newberg compare with other water systems in Yamhill County?

By EPA's size categories, City of Newberg is a large system (10,001 to 100,000 people). Yamhill County has 91 active public water systems, and City of Newberg is the 2nd-largest of them by population served. Its population served is about 25 times the county average of 998 people per system, and accounts for 28% 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 City of Newberg is about 3.8 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,175 Oregon systems (86%) list groundwater as their primary source.

Who owns and regulates City of Newberg?

EPA lists City of Newberg 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 City of Newberg have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2021. The violations listed here began between August 2011 and October 2021. By type: 10 monitoring and reporting, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (3 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
2021-10-01	Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31	Groundwater Rulecode 0700	No	Resolved
2021-07-01	Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56	Lead and Copper Rulecode 5000	No	Resolved
2020-07-01	Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56	Lead and Copper Rulecode 5000	No	Resolved
2018-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2018-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2015-01-01	Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31	Groundwater Rulecode 0700	No	Resolved
2015-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2015-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2013-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2013-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2011-10-22	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2011-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	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.

City of Newberg: frequently asked questions

Who runs City of Newberg?

City of Newberg (PWSID OR4100557) is a community water system owned by a local government. It is regulated by the OR state drinking water program.

How many people does City of Newberg serve?

City of Newberg reports serving 25,138 people through 7,656 service connections in Yamhill County, Oregon.

Where does City of Newberg 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 City of Newberg have any drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2021. 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 Newberg'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, one is health-based, and the most recent began in October 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the OR state drinking water program.

Where can I find City of Newberg's water quality report?

As a community water system, City of Newberg 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
Mcminnville Water & Light	Yamhill	34,515	Community	Surface water
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, “Newberg, City of, PWSID OR4100557, Oregon”, https://aquacensus.com/water-systems/oregon/newberg-city-of-or4100557 (data as of October 1, 2026).