Buchanan County, Missouri — public water systems
At a glance
3 active public water systems are filed under Buchanan County, Missouri in EPA's SDWIS records, together reporting 2,615 people served. The largest is Buchanan County Pwsd 1, which reports serving 2,115 people. All 3 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
3
Population served
2.6K
Community systems
3
Groundwater share
100%
How does Buchanan County compare with other Missouri counties?
Buchanan County has the 126th-most active public water systems among the 182 counties listed for active Missouri systems in EPA records; among the 132 with 3 or more systems, the median has 13. Its systems report 2,615 people served in total, the 120th-largest county figure in the state and less than 0.1% of the statewide total. The average system here reports serving 872 people, about 57% below the Missouri average of 2,049. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.
Where does Buchanan County's drinking water come from?
By primary water source, Buchanan County's active systems draw on purchased groundwater (3, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 92% and 8.1% across Missouri. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. The county's largest system, Buchanan County Pwsd 1, draws primarily on purchased groundwater.
What kinds of water systems operate in Buchanan County?
Buchanan County's active systems break down as 3 community systems (100%). 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. EPA lists their owner types as local government (100%).
Water systems in Buchanan County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Buchanan County Pwsd 1 | Buchanan | 2,115 | Community | Purchased groundwater |
| 2 | Dekalb Pws | Buchanan | 250 | Community | Purchased groundwater |
| 3 | Easton Pws | Buchanan | 250 | Community | Purchased groundwater |
Also serving Buchanan County
These systems serve several counties, including Buchanan County. EPA lists another county first for them, so they are not included in the counts above.
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mo American St Joseph | Andrew + 2 more | 89,171 | Community | Groundwater |
| Great Northwest Wholesale Water Commiss | Atchison + 10 more | 25 | Community | Purchased groundwater |
Buchanan County water systems: frequently asked questions
How many public water systems are in Buchanan County, Missouri?
EPA's SDWIS records file 3 active public water systems under Buchanan County, Missouri: 3 community systems (100%). At least 2 more systems are listed under another county but also serve Buchanan County.
Who supplies drinking water in Buchanan County, MO?
The largest community water systems filed under Buchanan County are Buchanan County Pwsd 1 (2,115 people served), Dekalb Pws (250 people served) and Easton Pws (250 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.
Does Buchanan County's drinking water come from groundwater or surface water?
Of the 3 active public water systems in Buchanan County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Buchanan County Pwsd 1, uses purchased groundwater.
Where can I find a water quality report for Buchanan County?
Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 3 community systems are filed under Buchanan County, so the report to look for is the one from the system that supplies your address.
How can I check violations for a water system in Buchanan County?
Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.
More Missouri water systems
- All Missouri public water systems· 2,943 active
- Parker County· 4 systems
- Wilson County· 4 systems
- Calcasieu Parish County· 3 systems
- Ouachita Parish County· 3 systems
- Worth County· 3 systems
- Putnam County· 3 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
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, “Public water systems in Buchanan County, Missouri”, https://aquacensus.com/water-systems/missouri/buchanan (data as of October 1, 2026).