Skip to content
AquaCensus

Lafayette Parish County, Missouri — public water systems

At a glance

23 active public water systems are filed under Lafayette Parish County, Missouri in EPA's SDWIS records, together reporting 7,945 people served. The largest is Magnolia-Le Triomphe Subdivision, which reports serving 1,278 people. All 23 are community water systems serving people where they live.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

23

Population served

7.9K

Community systems

23

Groundwater share

100%

How does Lafayette Parish County compare with other Missouri counties?

Lafayette Parish County has the 35th-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 7,945 people served in total, the 87th-largest county figure in the state and 0.1% of the statewide total. The average system here reports serving 345 people, well 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 Lafayette Parish County's drinking water come from?

By primary water source, Lafayette Parish County's active systems draw on purchased groundwater (19, 83%) and groundwater (4, 17%). 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, Magnolia-Le Triomphe Subdivision, draws primarily on purchased groundwater.

What kinds of water systems operate in Lafayette Parish County?

Lafayette Parish County's active systems break down as 23 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 private (100%).

Water systems in Lafayette Parish County

🔒 Create a free account to export CSV
Active public water systems in Lafayette Parish County, Missouri
#Water systemCountyPopulation servedTypeSource
1Magnolia-Le Triomphe SubdivisionLafayette Parish1,278CommunityPurchased groundwater
2Magnolia-Jackson SquareLafayette Parish825CommunityPurchased groundwater
3Magnolia-Windy MeadowsLafayette Parish549CommunityPurchased groundwater
4Magnolia-Garden Heights Subdivision WsLafayette Parish483CommunityGroundwater
5Magnolia-Markridge Park SubdivisionLafayette Parish468CommunityPurchased groundwater
6Magnolia-Beau ParterreLafayette Parish462CommunityPurchased groundwater
7Magnolia-Shenandoah EstatesLafayette Parish396CommunityPurchased groundwater
8Magnolia-Ossun HeightsLafayette Parish393CommunityPurchased groundwater
9Magnolia-Carencro VillageLafayette Parish315CommunityPurchased groundwater
10Magnolia-Coach House ManorLafayette Parish315CommunityPurchased groundwater
11Magnolia-Belleville SubdivisionLafayette Parish282CommunityPurchased groundwater
12Magnolia-Southfield SquareLafayette Parish279CommunityPurchased groundwater
13Magnolia-Grande StakesLafayette Parish252CommunityPurchased groundwater
14Magnolia-Chartres Place SubdivisionLafayette Parish210CommunityPurchased groundwater
15Magnolia-TrewhillLafayette Parish207CommunityPurchased groundwater
16Magnolia-Cottages of AcadianaLafayette Parish196CommunityGroundwater
17Magnolia-Lexington HeightsLafayette Parish192CommunityGroundwater
18Magnolia-Fox RunLafayette Parish189CommunityPurchased groundwater
19Magnolia-Village Quest SubdivisionLafayette Parish186CommunityGroundwater
20Magnolia-Brookhollow SubdivisionLafayette Parish165CommunityPurchased groundwater
21Magnolia-Pinnacle Place SubdivisionLafayette Parish132CommunityPurchased groundwater
22Magnolia-Country PinesLafayette Parish117CommunityPurchased groundwater
23Magnolia-Habersham SubdivisionLafayette Parish54CommunityPurchased groundwater

Lafayette Parish County water systems: frequently asked questions

How many public water systems are in Lafayette Parish County, Missouri?

EPA's SDWIS records file 23 active public water systems under Lafayette Parish County, Missouri: 23 community systems (100%).

Who supplies drinking water in Lafayette Parish County, MO?

The largest community water systems filed under Lafayette Parish County are Magnolia-Le Triomphe Subdivision (1,278 people served), Magnolia-Jackson Square (825 people served) and Magnolia-Windy Meadows (549 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 Lafayette Parish County's drinking water come from groundwater or surface water?

Of the 23 active public water systems in Lafayette Parish County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Magnolia-Le Triomphe Subdivision, uses purchased groundwater.

Where can I find a water quality report for Lafayette Parish 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. 23 community systems are filed under Lafayette Parish 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 Lafayette Parish 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 Lafayette Parish County, Missouri”, https://aquacensus.com/water-systems/missouri/lafayette-parish (data as of October 1, 2026).