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
401–425 of 501Ozark Acres Water Association
AR0000530 · 830 served
Hermitage Waterworks
AR0000067 · 830 served
Wire Road Water System
AR0000783 · 830 served
Imboden Waterworks
AR0000300 · 825 served
Grubbs Waterworks
AR0000267 · 823 served
Cottonwood Water Association
AR0000813 · 820 served
Keiser Waterworks
AR0000373 · 810 served
North Jackson Co Rural Water Assn
AR0000767 · 807 served
Mountain Pine Waterworks
AR0000176 · 805 served
Miller County Public Water Authority
AR0001141 · 803 served
Little River Water Association
AR0000371 · 802 served
Burdette Waterworks
AR0000366 · 798 served
Ozan Creek Water System
AR0001078 · 787 served
Huntington Waterworks
AR0000508 · 782 served
Lynn Waterworks
AR0000299 · 773 served
Sw Warren Water Association
AR0000852 · 765 served
Altheimer Waterworks
AR0000271 · 765 served
Garfield Waterworks
AR0000047 · 758 served
South Pike Co Water
AR0000978 · 755 served
Gray Rock Water Association
AR0000076 · 750 served
Rosston Water Department
AR0000395 · 750 served
Alpine Water Association
AR0000764 · 750 served
Norman Waterworks
AR0000391 · 750 served
Evening Shade Waterworks
AR0000525 · 750 served
Lockesburg Waterworks
AR0000517 · 739 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