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
176–200 of 501Furlow Public Water Authority
AR0000645 · 3,073 served
Concord Water & Sewer Pfb of Crawford Co
AR0000147 · 3,071 served
Buffalo Island Reg Water Dist
AR0000671 · 3,055 served
Cave City Waterworks
AR0000526 · 3,045 served
Grange-calamine Water Assoc
AR0000759 · 3,015 served
Brinkley Waterworks
AR0000384 · 2,992 served
Gurdon Waterworks
AR0000087 · 2,988 served
Oak Grove Water Association
AR0000146 · 2,963 served
Judsonia Waterworks
AR0000582 · 2,956 served
Pangburn Waterworks
AR0000580 · 2,936 served
Independence Jackson Regional
AR0000774 · 2,922 served
Bald Knob Waterworks
AR0000584 · 2,911 served
Bull Shoals Water System
AR0000352 · 2,835 served
Maumelle Water Corporation
AR0000464 · 2,832 served
Harrisburg Waterworks
AR0000431 · 2,824 served
Redfield Waterworks
AR0000279 · 2,823 served
Smackover Waterworks
AR0000555 · 2,821 served
Danville Waterworks
AR0000603 · 2,810 served
Dota Public Water Authority
AR0000698 · 2,722 served
Se Bradley Co Water Assn
AR0000870 · 2,713 served
Helena Water Sewer
AR0000419 · 2,708 served
Hoxie Water Department
AR0000301 · 2,666 served
Yellville Waterworks
AR0000356 · 2,630 served
Bald Knob North Water Assoc
AR0000689 · 2,624 served
Pleasant Grove
AR0000720 · 2,613 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