State Hub
Arkansas Water Quality
501
Utilities in database
3.0M
Residents served
32%
On private wells
2
Key contaminants tracked
Drinking Water in Arkansas
Arkansas has 501 community water systems serving approximately 3.0 million residents. Primary water sources include surface water. The most commonly reported contaminants include disinfection byproducts, nitrates. 32% of Arkansas residents rely on private wells. ADH holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in Arkansas
1–25 of 501Central Arkansas Water
AR0000465 · 368,455 served
Fayetteville Waterworks
AR0000569 · 116,398 served
Springdale Water Utilities
AR0000575 · 98,948 served
Fort Smith Water Utilities
AR0000507 · 86,209 served
Rogers Water Utilities
AR0000055 · 81,443 served
Jonesboro Water System
AR0000124 · 79,889 served
Hot Springs Utilities
AR0000209 · 75,343 served
Conway Water System
AR0000189 · 64,008 served
Bentonville Water Utilities
AR0000041 · 51,250 served
Texarkana Water Utilities
AR0000360 · 50,815 served
Liberty Utilities
AR0000272 · 43,438 served
Bella Vista Poa
AR0000039 · 39,419 served
Jacksonville Waterworks
AR0000466 · 32,875 served
Paragould Municipal Utilities
AR0000222 · 31,188 served
Benton Waterworks
AR0000484 · 30,681 served
Cabot Waterworks
AR0000338 · 30,063 served
City Corporation
AR0000446 · 29,260 served
Searcy Waterworks
AR0000590 · 28,196 served
Centerton Waterworks
AR0000044 · 27,243 served
Vilonia Waterworks
AR0000195 · 24,690 served
West Memphis Waterworks
AR0000156 · 24,419 served
Salem Water Users Llc
AR0000492 · 22,775 served
Van Buren Waterworks
AR0000142 · 22,725 served
Siloam Springs Waterworks
AR0000056 · 21,430 served
Tri-county Water Distbr Dist
AR0000782 · 20,394 served
Key Contaminant Concerns in Arkansas
Nitrates
Nitrate (NO₃⁻) is a nitrogen-containing compound that forms naturally through the decomposition of organic matter. At elevated concentrations — almost always from human activity — nitrate interferes with the blood's ability to carry oxygen. The United States produces over 23 million tons of nitrogen fertilizer annually, making agricultural runoff the dominant source of nitrate contamination.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
Arkansas Water FAQs
Quick Links
Data source: Utility data from EPA SDWIS. 501 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-22