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
251–275 of 501Lewisville Waterworks
AR0000297 · 1,951 served
Bay Waterworks
AR0000129 · 1,938 served
Freedom Public Water Authority
AR0000812 · 1,935 served
North Pike Co Rural Water Assn
AR0000826 · 1,932 served
East Newton County Water Assn
AR0000768 · 1,920 served
Lake Chicot Water Supply Association
AR0000080 · 1,909 served
Hampton Waterworks
AR0000070 · 1,906 served
Midway Water Association
AR0000153 · 1,899 served
Lamar Waterworks
AR0000288 · 1,885 served
Lakeside Water Association
AR0000822 · 1,876 served
Dorcheat Water Association
AR0000714 · 1,860 served
Magnet-butterfield Water Authority
AR0000241 · 1,838 served
West Saline Water Users Assn
AR0000682 · 1,825 served
Altus Waterworks
AR0000197 · 1,820 served
Tuckerman Waterworks
AR0000266 · 1,817 served
Kibler Water System
AR0000140 · 1,815 served
Benton County Water Authority5
AR0000913 · 1,813 served
Riviera Utilities
AR0000239 · 1,800 served
Dover Waterworks
AR0000444 · 1,797 served
Frenchport Water Association
AR0000636 · 1,793 served
Mammoth Spring Waterworks
AR0000206 · 1,777 served
Ladd Water Association
AR0000277 · 1,773 served
Mc Crory Waterworks
AR0000599 · 1,736 served
S P G Water Association
AR0000678 · 1,730 served
Calico Rock Waterworks
AR0000003 · 1,726 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
Lewisville Waterworks
Violation history, PFAS records, and official source links
Bay Waterworks
Violation history, PFAS records, and official source links
Freedom Public Water Authority
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