How many public water systems are in Arkansas?

Arkansas has 865 active public water systems in EPA SDWIS records, including 666 community water systems. Together they report serving 3.1M people.

What is the largest water system in Arkansas?

Central Arkansas Water is the largest active public water system in Arkansas, serving a reported 368,455 people.

Does Arkansas rely more on groundwater or surface water?

63.2% of Arkansas's active public water systems draw primarily on groundwater and 36.8% on surface water (including purchased supplies).

Arkansas public water systems

865 active systems regulated under the Safe Drinking Water Act, serving a reported 3.1M people across 83 counties.

Dataset updated July 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

865

Population served

3.1M

Community systems

666

Groundwater share

63.2%

System types in Arkansas

666

Community water system

Non-transient non-community water system

170

Transient non-community water system

Largest water systems in Arkansas

The largest active public water systems in Arkansas by population served
#	Water system	County	Population served	Type	Source
1	Central Arkansas Water	Pulaski	368,455	Community	Surface water
2	Fayetteville Waterworks	Washington	116,398	Community	Purchased surface water
3	Springdale Water Utilities	Washington	98,948	Community	Purchased surface water
4	Fort Smith Water Utilities	Sebastian	86,209	Community	Surface water
5	Rogers Water Utilities	Benton	81,443	Community	Purchased surface water
6	Jonesboro Water System	Poinsett	79,889	Community	Groundwater
7	Hot Springs Utilities	Garland	75,343	Community	Surface water
8	Conway Water System	Faulkner	64,008	Community	Surface water
9	Bentonville Water Utilities	Benton	51,250	Community	Purchased surface water
10	Texarkana Water Utilities	Miller	50,815	Community	Surface water
11	Liberty Utilities	Jefferson	43,438	Community	Groundwater
12	Bella Vista Poa	Benton	39,419	Community	Purchased surface water
13	Jacksonville Waterworks	Pulaski	32,875	Community	Purchased surface water
14	Paragould Municipal Utilities	Greene	31,188	Community	Groundwater
15	Benton Waterworks	Saline	30,681	Community	Surface water
16	Cabot Waterworks	Pulaski	30,063	Community	Purchased surface water
17	City Corporation	Pope	29,260	Community	Surface water
18	Searcy Waterworks	White	28,196	Community	Surface water
19	Centerton Waterworks	Benton	27,243	Community	Purchased surface water
20	Vilonia Waterworks	Faulkner	24,690	Community	Purchased surface water
21	West Memphis Waterworks	Crittenden	24,419	Community	Groundwater
22	Salem Water Users LLC	Saline	22,775	Community	Purchased surface water
23	Van Buren Waterworks	Crawford	22,725	Community	Purchased surface water
24	Siloam Springs Waterworks	Benton	21,430	Community	Surface water
25	Tri-County Water Distbr Dist	Pope	20,394	Community	Surface water

By county

Baxter51 systems Carroll43 systems Benton35 systems Union25 systems Marion22 systems Garland21 systems Mississippi21 systems Newton18 systems Logan18 systems White17 systems Crawford15 systems Fulton15 systems Pulaski15 systems Polk15 systems Boone14 systems Columbia14 systems Washington14 systems Clay13 systems Independence13 systems Sebastian13 systems Poinsett12 systems Crittenden12 systems Franklin12 systems Jefferson12 systems Lonoke12 systems Montgomery12 systems Desha11 systems Drew11 systems Johnson11 systems Lawrence11 systems Saline11 systems Sharp11 systems Arkansas10 systems Clark10 systems Jackson10 systems Hempstead10 systems Little River10 systems Ouachita10 systems Izard9 systems St. Francis9 systems Ashley9 systems Stone9 systems Faulkner9 systems Grant9 systems Pike9 systems Randolph9 systems Craighead8 systems Hot Spring8 systems Phillips8 systems Lafayette8 systems Miller8 systems Pope8 systems Searcy8 systems Bradley7 systems Calhoun7 systems Chicot7 systems Cleburne7 systems Howard7 systems Monroe7 systems Cleveland6 systems Dallas6 systems Prairie6 systems Yell6 systems Cross5 systems Lee5 systems Lincoln5 systems Perry5 systems Sevier5 systems Woodruff5 systems Conway4 systems Van Buren4 systems Greene4 systems Scott4 systems Nevada3 systems

Madison2 systems

San Joaquin2 systems

Union Parish2 systems

Rio Grande1 systems

Claiborne Parish1 systems

Howell1 systems

McDonald1 systems

Taney1 systems

Accomack1 systems