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Pettis County, Missouri — public water systems

At a glance

30 active public water systems are filed under Pettis County, Missouri in EPA's SDWIS records, together reporting 28,494 people served. The largest is Sedalia Pws, which reports serving 21,725 people. 19 are community water systems serving people where they live; the other 11 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

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

Active systems

30

Population served

28.5K

Community systems

19

Groundwater share

100%

How does Pettis County compare with other Missouri counties?

Pettis County has the 24th-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 28,494 people served in total, the 33rd-largest county figure in the state and 0.5% of the statewide total. The average system here reports serving 950 people, about half of 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 Pettis County's drinking water come from?

By primary water source, Pettis County's active systems draw on groundwater (30, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 92% and 8.1% across Missouri. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Sedalia Pws, draws primarily on groundwater.

What kinds of water systems operate in Pettis County?

Pettis County's active systems break down as 19 community systems (63%), 3 non-transient non-community systems (10%) and 8 transient non-community systems (27%). 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. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (80%), local government (17%) and state government (3.3%).

Water systems in Pettis County

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Active public water systems in Pettis County, Missouri
#Water systemCountyPopulation servedTypeSource
1Sedalia PwsPettis21,725CommunityGroundwater
2Tyson Poultry Inc.Pettis1,400Non-transient non-communityGroundwater
3La Monte PwsPettis1,120CommunityGroundwater
4Mo American Maplewood SubdivisionPettis1,008CommunityGroundwater
5Green Ridge PwsPettis595CommunityGroundwater
6Mo American SmithtonPettis563CommunityGroundwater
7Southgate SubdivisionPettis216CommunityGroundwater
8Houstonia PwsPettis198CommunityGroundwater
9Prysmian Cables and Systems USA LLCPettis180Non-transient non-communityGroundwater
10Hughesville PwsPettis158CommunityGroundwater
11Mo American Monsees Lake EstatesPettis155CommunityGroundwater
12Elm Hills Utility Operating Company Inc.Pettis154CommunityGroundwater
13Southern Hills Water CoPettis144CommunityGroundwater
14Bothwell Lodge State Historic SitePettis120Transient non-communityGroundwater
15West Central Christian ServicePettis100Transient non-communityGroundwater
16Mid State Specialty Eggs - Egg WashingPettis100Non-transient non-communityGroundwater
17Hidden Hills EstatesPettis70CommunityGroundwater
18Camp Branch Baptist ChurchPettis60Transient non-communityGroundwater
19J&M MHP Capital LLCPettis60CommunityGroundwater
20Happy AcresPettis50CommunityGroundwater
21Woolery MHPPettis45CommunityGroundwater
22Lakewood Heights SubdPettis40CommunityGroundwater
23Crestview MHPPettis35CommunityGroundwater
24Southwood Acres SubdPettis35CommunityGroundwater
25Budget InnPettis33Transient non-communityGroundwater
26Budget Host Super 7 MotelPettis30Transient non-communityGroundwater
27Show Me Christian Youth HomePettis30CommunityGroundwater
28Casa Inc.Pettis25Transient non-communityGroundwater
29Claras North 65 CafePettis25Transient non-communityGroundwater
30Countryside Rv ParkPettis20Transient non-communityGroundwater

Also serving Pettis County

These systems serve several counties, including Pettis County. EPA lists another county first for them, so they are not included in the counts above.

Multi-county water systems that also serve Pettis County, Missouri
Water systemCountyPopulation servedTypeSource
Pettis/Johnson/Saline Pwsd 1Johnson + 2 more1,000CommunityPurchased surface water

Pettis County water systems: frequently asked questions

How many public water systems are in Pettis County, Missouri?

EPA's SDWIS records file 30 active public water systems under Pettis County, Missouri: 19 community systems (63%), 3 non-transient non-community systems (10%) and 8 transient non-community systems (27%). At least 1 more system is listed under another county but also serve Pettis County.

Who supplies drinking water in Pettis County, MO?

The largest community water systems filed under Pettis County are Sedalia Pws (21,725 people served), La Monte Pws (1,120 people served) and Mo American Maplewood Subdivision (1,008 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 Pettis County's drinking water come from groundwater or surface water?

Of the 30 active public water systems in Pettis County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Sedalia Pws, uses groundwater.

Where can I find a water quality report for Pettis 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. 19 community systems are filed under Pettis 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 Pettis 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 Pettis County, Missouri”, https://aquacensus.com/water-systems/missouri/pettis (data as of October 1, 2026).