Public water system · 083890001
ActiveMandaree Water Plant
At a glance
Mandaree Water Plant (PWSID 083890001) is an active community water system in North Dakota. It reports serving 1,034 people through 321 service connections. Its primary water source is surface water, and EPA lists it as owned by the federal government. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,034
Service connections
321
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Mandaree Water Plant compare with other water systems in North Dakota?
By EPA's size categories, Mandaree Water Plant is a small system (501 to 3,300 people). 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 Mandaree Water Plant 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 20 North Dakota systems (5%) list surface water as their primary source.
Who owns and regulates Mandaree Water Plant?
EPA lists Mandaree Water Plant as owned by the federal government. The EPA Region 08 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.
Does Mandaree Water Plant have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 2015. The violations listed here began between March 2008 and July 2015. By type: 8 monitoring and reporting, 3 required treatment not met and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 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 |
|---|---|---|---|---|
| 2015-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2014-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2012-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2012-11-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2011-10-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2011-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-07-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2011-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2008-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Mandaree Water Plant: frequently asked questions
Who runs Mandaree Water Plant?
Mandaree Water Plant (PWSID 083890001) is a community water system owned by the federal government. It is regulated by the EPA Region 08.
How many people does Mandaree Water Plant serve?
Mandaree Water Plant reports serving 1,034 people through 321 service connections in North Dakota.
Where does Mandaree Water Plant 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 Mandaree Water Plant have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 2015. 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 Mandaree Water Plant'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, 4 are health-based, and the most recent began in July 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the EPA Region 08.
Where can I find Mandaree Water Plant's water quality report?
As a community water system, Mandaree Water Plant 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 North Dakota
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Fargo City of | Cass | 120,762 | Community | Surface water |
| Bismarck City of | Burleigh | 72,417 | Community | Groundwater under influence of surface water |
| Grand Forks Regional WTP | Grand Forks | 57,339 | Community | Surface water |
| Minot City of | Ward | 48,743 | Community | Groundwater |
| West Fargo City of | Cass | 34,858 | Community | Purchased surface water |
| Williston City of | Williams | 26,426 | 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, “Mandaree Water Plant, PWSID 083890001, North Dakota”, https://aquacensus.com/water-systems/north-dakota/mandaree-water-plant-083890001 (data as of October 1, 2026).