Public water system · MO1010786
ActiveTarkio Board of Public Works Pws
At a glance
Tarkio Board of Public Works Pws (PWSID MO1010786) is an active community water system in Atchison County, Missouri. It reports serving 1,494 people through 759 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, 5 are health-based, and the most recent began in January 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,494
Service connections
759
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Tarkio Board of Public Works Pws compare with other water systems in Atchison County?
By EPA's size categories, Tarkio Board of Public Works Pws is a small system (501 to 3,300 people). Atchison County has 7 active public water systems, and Tarkio Board of Public Works Pws is the largest of them by population served. Its population served is about 142% above the county average of 616 people per system, and accounts for 35% of the 4,315 people reported by systems filed under the county. Across Missouri, the 2,943 active systems average 2,049 people each. Nationally, the average active community water system reports serving 6,703 people, so Tarkio Board of Public Works Pws 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. Missouri has 1,612 active community water systems, 55% of the state's 2,943 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 177 Missouri systems (6%) list purchased groundwater as their primary source.
Who owns and regulates Tarkio Board of Public Works Pws?
EPA lists Tarkio Board of Public Works Pws as owned by a local government. The MO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 6 of the 7 active systems in Atchison County (86%) are also owned by a local government.
Does Tarkio Board of Public Works Pws have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in January 2013. The violations listed here began between January 1994 and January 2013. By type: 6 monitoring and reporting, 5 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (5 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 |
|---|---|---|---|---|
| 2013-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2012-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2012-09-30 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2012-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2012-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2012-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2010-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | 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.
Tarkio Board of Public Works Pws: frequently asked questions
Who runs Tarkio Board of Public Works Pws?
Tarkio Board of Public Works Pws (PWSID MO1010786) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Tarkio Board of Public Works Pws serve?
Tarkio Board of Public Works Pws reports serving 1,494 people through 759 service connections in Atchison County, Missouri.
Where does Tarkio Board of Public Works Pws 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 Tarkio Board of Public Works Pws have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in January 2013. 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 Tarkio Board of Public Works Pws' 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, 5 are health-based, and the most recent began in January 2013. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Tarkio Board of Public Works Pws' water quality report?
As a community water system, Tarkio Board of Public Works Pws 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 Atchison County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rock Port Pws | Atchison | 1,318 | Community | Purchased groundwater |
| Atchison County Pwsd 1 | Atchison | 700 | Community | Purchased groundwater |
| Fairfax Pws | Atchison | 638 | Community | Purchased groundwater |
| Westboro Pws | Atchison | 115 | Community | Purchased groundwater |
| Great Northwest Wholesale Water Commiss | Atchison + 10 more | 25 | Community | Purchased groundwater |
| Atchison County Wholesale Water Comm | Atchison | 25 | Community | 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, “Tarkio Board of Public Works Pws, PWSID MO1010786, Missouri”, https://aquacensus.com/water-systems/missouri/tarkio-board-of-public-works-pws-mo1010786 (data as of October 1, 2026).