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
51–75 of 501Pea Ridge Waterworks
AR0000053 · 10,820 served
Batesville Water Utilities
AR0000250 · 10,177 served
Trumann Waterworks
AR0000435 · 10,000 served
Forrest City Waterworks
AR0000004 · 9,986 served
Greenwood Waterworks
AR0000504 · 9,905 served
Malvern Waterworks
AR0000237 · 9,690 served
Prairie Grove Waterworks
AR0000573 · 9,615 served
Southwest Water Users Llc
AR0000495 · 9,573 served
Clarksville Connected Utilities
AR0000289 · 9,410 served
Mountain Top Water Association
AR0000454 · 9,253 served
Southside Pub Water Authority
AR0000254 · 9,108 served
Cross County Rural Water Sys
AR0000459 · 8,788 served
Us Air Force Base Little Rock
AR0000690 · 8,618 served
Cedarville Waterworks Fbcc
AR0000138 · 8,529 served
Beebe Waterworks
AR0000592 · 8,451 served
Monticello Water Department
AR0000184 · 8,442 served
Wynne Waterworks
AR0000163 · 8,391 served
N Garland Co Reg Water Dist
AR0000867 · 7,913 served
Gentry Waterworks
AR0000048 · 7,910 served
Crossett Water Commission
AR0000017 · 7,900 served
Pocahontas Waterworks
AR0000474 · 7,752 served
Lawrence Co Reg Water Dist
AR0000688 · 7,469 served
Stuttgart Waterworks
AR0000013 · 7,393 served
Mayflower Waterworks
AR0000193 · 7,390 served
Yorktown Water Association
AR0000319 · 7,364 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