Audrain County, Missouri — public water systems
At a glance
7 active public water systems are filed under Audrain County, Missouri in EPA's SDWIS records, together reporting 28,376 people served. The largest is Mo American Mexico, which reports serving 13,000 people. All 7 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
7
Population served
28.4K
Community systems
7
Groundwater share
42.9%
How does Audrain County compare with other Missouri counties?
Audrain County has the 94th-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 28,376 people served in total, the 34th-largest county figure in the state and 0.5% of the statewide total. The average system here reports serving 4,054 people, about twice 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 Audrain County's drinking water come from?
By primary water source, Audrain County's active systems draw on purchased surface water (3, 43%), groundwater (3, 43%) and surface water (1, 14%). Overall, 43% rely mainly on groundwater (including purchased groundwater) and 57% on surface water, compared with 92% and 8.1% across Missouri. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. The county's largest system, Mo American Mexico, draws primarily on groundwater.
What kinds of water systems operate in Audrain County?
Audrain County's active systems break down as 7 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 (86%) and private (14%).
Water systems in Audrain County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Mo American Mexico | Audrain | 13,000 | Community | Groundwater |
| 2 | Monroe County Pwsd 2 | Audrain + 2 more | 6,700 | Community | Purchased surface water |
| 3 | Audrain County Consolidated Pwsd 2 | Audrain | 4,016 | Community | Groundwater |
| 4 | Vandalia Pws | Audrain | 3,140 | Community | Surface water |
| 5 | Martinsburg Pws | Audrain | 559 | Community | Groundwater |
| 6 | Laddonia Pws | Audrain | 511 | Community | Purchased surface water |
| 7 | Farber Pws | Audrain | 450 | Community | Purchased surface water |
Audrain County water systems: frequently asked questions
How many public water systems are in Audrain County, Missouri?
EPA's SDWIS records file 7 active public water systems under Audrain County, Missouri: 7 community systems (100%).
Who supplies drinking water in Audrain County, MO?
The largest community water systems filed under Audrain County are Mo American Mexico (13,000 people served), Monroe County Pwsd 2 (6,700 people served) and Audrain County Consolidated Pwsd 2 (4,016 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 Audrain County's drinking water come from groundwater or surface water?
Of the 7 active public water systems in Audrain County, 43% draw mainly on groundwater and 57% on surface water, counting purchased supplies. The largest system, Mo American Mexico, uses groundwater.
Where can I find a water quality report for Audrain 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. 7 community systems are filed under Audrain 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 Audrain 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
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 Audrain County, Missouri”, https://aquacensus.com/water-systems/missouri/audrain (data as of October 1, 2026).