State Hub
Arkansas Water Quality
501
Utilities in database
3.0M
Residents served
1
With open violations
171
PFAS monitored
Quick Answer
Arkansas public drinking water is served by 501 EPA-tracked water systems, providing service to approximately 3.0 million residents through public utilities. 1 of those systems currently have open health-based violations on record in the EPA federal database. 171 systems have official PFAS monitoring records from the EPA UCMR 5 program (2023–2025). About 32% of AR residents use private wells, which fall outside federal utility compliance monitoring.
1 Arkansas water system has an open health-based violation recorded in EPA SDWIS. An open violation means a contaminant exceeded a federal limit and the violation has not been formally resolved in the federal database. Check individual utility pages for current status.
Open Health-Based Violations in Arkansas
Records sourced from EPA SDWIS. A record may be under review or resolved at the utility level but not yet updated in federal records. Water Utility Report does not determine whether water is safe to drink.
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.
Highest Risk Utilities
Arkansas systems with open health-based violations in EPA records.
Safest Large Utilities
Arkansas systems with no open health violations serving 10,000+ residents.
Utilities in Arkansas
26–50 of 501Washington Water Authority Wwa
AR0000574 · 20,140 served
Mountain Home Waterworks
AR0000025 · 19,618 served
Bryant Waterworks
AR0000486 · 19,607 served
Community Water System
AR0000101 · 18,628 served
El Dorado Waterworks
AR0000550 · 17,932 served
Conway Co Regional Water Dist
AR0000119 · 17,858 served
Harrison Waterworks
AR0000062 · 17,455 served
Hot Springs Village Waterworks
AR0000208 · 15,985 served
Sardis Water Association
AR0000493 · 15,660 served
Grand Prairie Regional Water
AR0000738 · 15,204 served
Heber Springs Water System
AR0000104 · 14,015 served
Grand Prairie Bayou 2 Pwa
AR0000734 · 13,519 served
Camden Waterworks
AR0000404 · 13,275 served
Marion Waterworks
AR0000152 · 13,032 served
Blytheville Waterworks
AR0000365 · 12,981 served
Greenbrier Waterworks
AR0000191 · 12,938 served
Kimzey Regional Water District
AR0000821 · 12,718 served
Ward Waterworks
AR0000345 · 12,579 served
Sw White County Water Assn
AR0000185 · 12,173 served
Arkadelphia Waterworks
AR0000085 · 11,855 served
Magnolia Waterworks
AR0000109 · 11,657 served
James Fork Regional Water District
AR0000513 · 11,538 served
Hope Water Light Comm
AR0000230 · 11,500 served
Madison Co Water Facilities Bd
AR0000349 · 11,435 served
Mid-arkansas Utilities P.w.a
AR0000725 · 11,148 served
Key Contaminant Concerns in Arkansas
These contaminants appear most frequently in Arkansas utility records or pose elevated risk in this region based on EPA data.
Nitrates
Nitrate (NO₃⁻) is a nitrogen-containing compound that forms naturally through the decomposition of organic matter. At elevated concentrations — almost always caused by human activity — nitrate is converted in the digestive system to nitrite, which then reacts with hemoglobin to form methemoglobin, a form of hemoglobin that cannot carry oxygen. In the body, nitrite also reacts with amines in food to form N-nitroso compounds (nitrosamines) — known carcinogens classified by the IARC as Group 2A (probable human carcinogens). The United States applies over 23 million tons of nitrogen fertilizer annually, making agricultural runoff the dominant source of nitrate contamination in U.S. groundwater.
EPA limit: 10 mg/L
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.
EPA limit: 80 µg/L (TTHMs) / 60 µg/L (HAA5)
Independent Water Testing
Find a certified lab in Arkansas
Utility compliance records show what water systems report to the EPA. An independent test from a certified laboratory confirms what's actually in your tap water. Arkansas labs can test for PFAS, lead, nitrates, bacteria, and dozens of other contaminants.
Explore Water Quality in Arkansas
Washington Water Authority Wwa
Violation history, PFAS records, and official source links
Mountain Home Waterworks
Violation history, PFAS records, and official source links
Bryant Waterworks
Violation history, PFAS records, and official source links
PFAS monitoring records — Arkansas
171 water systems in Arkansas with EPA UCMR 5 records
Active drinking water violations
1 open health-based violation on record — view official EPA SDWIS data
Lead in Arkansas drinking water
State-specific lead data, violation utilities, and testing guidance
PFAS in Arkansas drinking water
State-specific PFAS data, MCL context, and treatment options
Certified water testing labs in Arkansas
Labs certified for PFAS (EPA 533/537.1), lead, and bacteria testing
Water treatment options
Reverse osmosis, activated carbon, and filtration guides with cost ranges
Data sources and methodology
How WaterUtilityReport.com sources and validates official EPA data
Common Questions About Arkansas Drinking Water
Does Arkansas drinking water have PFAS?
171 Arkansas water systems have EPA UCMR 5 PFAS monitoring records (2023–2025)
Which Arkansas water utilities have open violations?
1 systems have open health-based violations in EPA SDWIS — search for your utility
How do I test my water in Arkansas?
State-certified labs for PFAS (EPA 533/537.1), lead, nitrate, and bacteria testing
What treatment removes PFAS from AR tap water?
Reverse osmosis removes PFAS, lead, arsenic, and nitrates — cost, maintenance, and NSF certification explained
What do Arkansas PFAS records tell me about my water?
EPA limits, health context, and what UCMR 5 detection above MRL means for your water
How is Arkansas water quality data sourced here?
EPA SDWIS violations, UCMR 5 PFAS records, and CCR data — sources, accuracy notes, and limitations
Arkansas Water FAQs
Data sources: Utility compliance and violation data from EPA SDWIS (Safe Drinking Water Information System). PFAS monitoring records from EPA UCMR 5 (Unregulated Contaminant Monitoring Rule 5, 2023–2025). Contaminant data from EPA and ATSDR public references. This page summarizes public records — it is not a compliance determination. Methodology →
Last updated: 2026-04-22