Public water system · ND0200763

Active

Oriska City of

At a glance

City of Oriska (PWSID ND0200763) is an active community water system in Barnes County, North Dakota. It reports serving 118 people through 50 service connections. Its primary water source is purchased groundwater, 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 August 2020.

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

Population served

118

Service connections

Primary source

GWP

Purchased groundwater

System type

CWS

Community water system

System record

PWSIDND0200763

System typeCommunity water system

Activity statusActive

Population served118

Service connections50

Primary water sourcePurchased groundwater

Owner typeLocal government

Primacy agencyND state drinking water program

City servedOriska

StateNorth Dakota

ZIP—

CountyBarnes County

How does City of Oriska compare with other water systems in Barnes County?

By EPA's size categories, City of Oriska is a very small system (500 people or fewer). Barnes County has 9 active public water systems, and City of Oriska is the 6th-largest of them by population served. Its population served is well below the county average of 1,377 people per system, and accounts for 1% of the 12,391 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 Oriska 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 groundwater means the system buys groundwater from another public water system rather than drawing its own. 114 North Dakota systems (28%) list purchased groundwater as their primary source.

Who owns and regulates City of Oriska?

EPA lists City of Oriska 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 9 active systems in Barnes County (89%) are also owned by a local government.

Does City of Oriska have drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in August 2020. The violations listed here began between August 2008 and August 2020. By type: 7 monitoring and reporting, 3 public notice, recordkeeping or other and 2 monitoring. The contaminant or rule involved most often is Chlorine (3 of them). EPA lists 10 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2020-08-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2020-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2018-12-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2018-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2013-09-13	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2012-10-25	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Unaddressed
2011-08-21	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2011-06-15	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2011-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2011-04-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2010-09-03	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Unaddressed
2008-08-25	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	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.

City of Oriska: frequently asked questions

Who runs City of Oriska?

City of Oriska (PWSID ND0200763) 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 Oriska serve?

City of Oriska reports serving 118 people through 50 service connections in Barnes County, North Dakota.

Where does City of Oriska get its water?

EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.

Does City of Oriska 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 August 2020. 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 Oriska'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 August 2020. 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 Oriska's water quality report?

As a community water system, City of Oriska 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 Barnes County

Water system	County	Population served	Type	Source
Valley City City of	Barnes	6,585	Community	Surface water
Barnes Rural Water District	Barnes	4,938	Community	Groundwater
Wimbledon City of	Barnes	216	Community	Purchased groundwater
Sanborn City of	Barnes	192	Community	Purchased groundwater
Litchville City of	Barnes	172	Community	Purchased groundwater
Dazey City of	Barnes	78	Community	Purchased groundwater

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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, “Oriska City of, PWSID ND0200763, North Dakota”, https://aquacensus.com/water-systems/north-dakota/oriska-city-of-nd0200763 (data as of October 1, 2026).