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
126–150 of 501Lakeview-midway Public Water Authority
AR0000027 · 4,383 served
Ozark Waterworks
AR0000201 · 4,368 served
Milltown-washburn Water Users
AR0000773 · 4,325 served
Brookland Waterworks
AR0000131 · 4,283 served
Little River Co Rda
AR0000787 · 4,279 served
Lonoke Waterworks
AR0000343 · 4,277 served
Riversouth Rural Water Dist
AR0000674 · 4,275 served
Ashdown Waterworks
AR0000320 · 4,261 served
Des Arc Waterworks
AR0000449 · 4,245 served
Beaverfork Pwa
AR0000844 · 4,220 served
Manila Waterworks
AR0000378 · 4,165 served
Nashville Waterworks
AR0000244 · 4,153 served
Melbourne Waterworks
AR0000256 · 4,126 served
Eureka Springs Waterworks
AR0000075 · 4,053 served
Pottsville Water Association
AR0000445 · 4,045 served
Haskell Water System
AR0000488 · 4,000 served
Highfill Water Department
AR0000885 · 3,970 served
Elkins Waterworks
AR0000567 · 3,905 served
South Sheridan Water Assoc
AR0000219 · 3,887 served
Austin Waterworks
AR0000346 · 3,886 served
Crowleys Ridge Water Assoc
AR0000180 · 3,873 served
Flippin Waterworks
AR0000351 · 3,870 served
Center Grove Water Association
AR0000213 · 3,858 served
Mc Gehee Waterworks
AR0000170 · 3,849 served
Booneville Waterworks
AR0000326 · 3,847 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