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
151–175 of 501Shannon Hills Water Dept
AR0000800 · 3,832 served
Adc - Cummins Unit Maint
AR0000315 · 3,800 served
Lee County Water Association
AR0000313 · 3,770 served
Pfeiffer Water Authority
AR0000251 · 3,690 served
Lavaca Waterworks
AR0000510 · 3,650 served
Barton Lexa Water Association
AR0000415 · 3,642 served
Bee Branch Water
AR0000462 · 3,630 served
Waldron Waterworks
AR0000498 · 3,550 served
Hot Spring Co Water Assoc
AR0000236 · 3,528 served
Huntsville Waterworks
AR0000348 · 3,508 served
Van Buren County Pwa
AR0000727 · 3,500 served
Rock Moore Water Authority
AR0000252 · 3,462 served
Valley Springs Waterworks
AR0000065 · 3,400 served
Corning Waterworks
AR0000096 · 3,388 served
Charleston Waterworks
AR0000200 · 3,386 served
Bergman Waterworks
AR0000060 · 3,285 served
Marianna Waterworks
AR0000310 · 3,238 served
North Crossett Utilities
AR0000022 · 3,222 served
Mount Ida Waterworks
AR0000392 · 3,218 served
Horseshoe Bend Waterworks
AR0000255 · 3,217 served
Dewitt Waterworks
AR0000008 · 3,208 served
Fordyce Water Co
AR0000164 · 3,191 served
West Fork Waterworks
AR0000577 · 3,178 served
Tri County Rwdd -moores Chapel
AR0000846 · 3,112 served
Gosnell Water Association
AR0000374 · 3,083 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