Lewis County, Missouri — public water systems
At a glance
5 active public water systems are filed under Lewis County, Missouri in EPA's SDWIS records, together reporting 7,015 people served. The largest is Canton Pws, which reports serving 3,200 people. All 5 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
5
Population served
7K
Community systems
5
Groundwater share
40%
How does Lewis County compare with other Missouri counties?
Lewis County has the 105th-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 7,015 people served in total, the 89th-largest county figure in the state and 0.1% of the statewide total. The average system here reports serving 1,403 people, about 32% 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 Lewis County's drinking water come from?
By primary water source, Lewis County's active systems draw on purchased surface water (3, 60%) and groundwater (2, 40%). Overall, 40% rely mainly on groundwater (including purchased groundwater) and 60% 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, Canton Pws, draws primarily on groundwater.
What kinds of water systems operate in Lewis County?
Lewis County's active systems break down as 5 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 Lewis County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Canton Pws | Lewis | 3,200 | Community | Groundwater |
| 2 | Lewis County Pwsd 1 | Lewis | 1,700 | Community | Purchased surface water |
| 3 | Lagrange Pws | Lewis | 875 | Community | Groundwater |
| 4 | La Belle Pws | Lewis | 660 | Community | Purchased surface water |
| 5 | Lewistown Pws | Lewis | 580 | Community | Purchased surface water |
Lewis County water systems: frequently asked questions
How many public water systems are in Lewis County, Missouri?
EPA's SDWIS records file 5 active public water systems under Lewis County, Missouri: 5 community systems (100%).
Who supplies drinking water in Lewis County, MO?
The largest community water systems filed under Lewis County are Canton Pws (3,200 people served), Lewis County Pwsd 1 (1,700 people served) and Lagrange Pws (875 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 Lewis County's drinking water come from groundwater or surface water?
Of the 5 active public water systems in Lewis County, 40% draw mainly on groundwater and 60% on surface water, counting purchased supplies. The largest system, Canton Pws, uses groundwater.
Where can I find a water quality report for Lewis 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. 5 community systems are filed under Lewis 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 Lewis 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
- Mississippi County· 6 systems
- Pemiscot County· 6 systems
- Livingston Parish County· 5 systems
- Chariton County· 5 systems
- Shelby County· 5 systems
- Grundy County· 5 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 Lewis County, Missouri”, https://aquacensus.com/water-systems/missouri/lewis (data as of October 1, 2026).