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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
226–250 of 501Krooked Kreek Water Assn
AR0000706 · 2,250 served
Cleveland Co Rural Water Users Assoc
AR0000069 · 2,243 served
Damascus Water Works
AR0000190 · 2,235 served
Lepanto Waterworks
AR0000432 · 2,231 served
Augusta Waterworks
AR0000597 · 2,228 served
Hughes Community Water Assoc
AR0000011 · 2,195 served
Harmony Grove Water Assoc
AR0000402 · 2,192 served
Lake City Waterworks
AR0000122 · 2,186 served
Vanndale-birdeye Water Assoc
AR0000162 · 2,174 served
Star City Waterworks
AR0000318 · 2,173 served
Hwy 4 24 Water Association
AR0000765 · 2,135 served
Crawfordsville Waterworks
AR0000149 · 2,103 served
Knoxville Waterworks
AR0000287 · 2,087 served
South Logan County Water
AR0000851 · 2,087 served
Glenwood Water Department
AR0000422 · 2,068 served
Lake Village Waterworks
AR0000081 · 2,065 served
Gassville Waterworks
AR0000034 · 2,040 served
Leachville Waterworks
AR0000362 · 2,030 served
Central Arkansas Water Paron
AR0000883 · 2,025 served
Wickes Waterworks
AR0000440 · 2,014 served
Adc - Tucker Unit Maint
AR0000282 · 2,000 served
Tull Water
AR0000220 · 1,987 served
Acorn Rural Water Assn
AR0000811 · 1,975 served
Perla Water Association
AR0000623 · 1,970 served
Wye Mountain Water Association
AR0000410 · 1,963 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