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
301–325 of 501Bodcaw Rural Water System
AR0000887 · 1,430 served
Bethesda Water Association
AR0000627 · 1,430 served
Cushman Water System
AR0000249 · 1,423 served
Havana Waterworks
AR0000602 · 1,411 served
Marmaduke Waterworks
AR0000225 · 1,410 served
Quitman Waterworks
AR0000105 · 1,400 served
Shumaker Public Service Co
AR0000407 · 1,399 served
Monette Waterworks
AR0000128 · 1,385 served
Hwy 9 Water Association
AR0000702 · 1,375 served
Coal Hill Waterworks
AR0000290 · 1,372 served
Mineral Springs Waterworks
AR0000242 · 1,364 served
London Waterworks
AR0000443 · 1,363 served
Wildwood Water Association
AR0000562 · 1,350 served
Dogwood Water Association
AR0000585 · 1,345 served
Rison Waterworks
AR0000106 · 1,344 served
Prattsville Waterworks
AR0000216 · 1,341 served
Walker Creek Stateline Rwa
AR0000858 · 1,340 served
Toad Suck Public Facility Bd
AR0000798 · 1,340 served
Mt Pleasant Waterworks
AR0000258 · 1,338 served
Wilson Water System
AR0000370 · 1,336 served
Faircrest Water Association
AR0000544 · 1,329 served
Sparkman Waterworks
AR0000166 · 1,325 served
Clarendon Waterworks
AR0000385 · 1,320 served
Dierks Water Works
AR0000243 · 1,317 served
Marvell Rural Water Assoc
AR0000637 · 1,305 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