Arkansas

Water quality data from the EPA Safe Drinking Water Information System

Lead Risk: Caution

Water Systems

3,972

Active public water systems

Population Served

3.05M

Residents with piped water

Lead Violations

Systems exceeding 15 ppb

Copper Violations

Lead & Copper Rule

Average Lead Level

4.54 ppb

EPA Action Level: 15 ppb

MCLG (health goal): 0 ppb

0 ppbAction Level: 15 ppb

Average across 852 systems with reported lead data.

Violations Detected

124 water systems in Arkansas have reported violations under the Lead and Copper Rule. These utilities are required to notify customers and take corrective action.

51 lead violations73 copper violations

Water Systems: Highest Lead Levels

System Name	City	Population	Lead Level	Status	Sample Date
SW WHITE COUNTY WATER ASSN	SEARCY	12,173	9.00 ppb	OK	2005-12-31
TRI-COUNTY WATER DISTBR DIST	RUSSELVILLE	20,394	7.00 ppb	OK	2025-12-31
HARRISON WATERWORKS	HARRISON	17,455	5.00 ppb	OK	2024-12-31
NORTH LITTLE ROCK WATERWORKS	NO. LITTLE ROCK	102,610	3.00 ppb	OK	1998-12-31
CENTRAL ARKANSAS WATER MAUMELLE	MAUMELLE	20,115	3.00 ppb	OK	2016-12-31
VILONIA WATERWORKS	VILONIA	24,690	2.50 ppb	OK	2025-12-31
MOUNTAIN HOME WATERWORKS	MOUNTAIN HOME	19,618	2.00 ppb	OK	2025-12-31
COMMUNITY WATER SYSTEM	GREERS FERRY	18,628	2.00 ppb	OK	2025-12-31
EL DORADO WATERWORKS	EL DORADO	17,932	2.00 ppb	OK	2025-12-31
SARDIS WATER ASSOCIATION	MABELVALE	15,660	2.00 ppb	OK	2025-12-31
GREENBRIER WATERWORKS	GREENBRIER	12,938	2.00 ppb	OK	2025-12-31
MAGNOLIA WATERWORKS	MAGNOLIA	11,657	2.00 ppb	OK	2025-12-31
MADISON CO WATER FACILITIES BD	HUNTSVILLE	11,435	2.00 ppb	OK	2025-12-31
CENTRAL ARKANSAS WATER	LITTLE ROCK	368,455	1.00 ppb	OK	2025-12-31
FAYETTEVILLE WATERWORKS	FAYETTEVILLE	116,398	1.00 ppb	OK	2025-12-31

Showing top 15 of 835 systems with lead data. Action level: 15 ppb.

Systems With Active Violations

These water systems have exceeded EPA limits and must take corrective action.

CABOT WATERWORKS

CABOT · Pop. 26,770

Copper

Lead: 1.00 ppb (2025-12-31)

CONWAY CO REGIONAL WATER DIST

MORRILTON · Pop. 17,858

Copper

Lead: 1.00 ppb (2025-12-31)

CAMDEN WATERWORKS

CAMDEN · Pop. 13,275

Copper

Lead: 1.00 ppb (2025-12-31)

GREENBRIER WATERWORKS

GREENBRIER · Pop. 12,938

Copper

Lead: 2.00 ppb (2025-12-31)

WARD WATERWORKS

WARD · Pop. 12,579

Copper

Lead: 1.00 ppb (2025-12-31)

Water Source Types

Groundwater3305 (84%)

Purchased Surface Water323 (8%)

Surface Water127 (3%)

Purchased Groundwater115 (3%)

Groundwater Under Influence of SW48 (1%)

Unknown2 (0%)

Purchased GW Under Influence of SW1 (0%)

Resources

EPA Water Data Reports

Official drinking water data and reports

Lead in Drinking Water

EPA guidance on lead risks and remediation

Learn About Lead Contamination

Health effects, filtering options, and more

Air Quality

Good

Avg AQI

48.7

PM2.5

8.2 µg/m³

Unhealthy Days

Primary Pollutant

PM2.5, Ozone

AQI 0 (Good)AQI 100 (Moderate)200+

Source: EPA AirNow & American Lung Association 2024 State of the Air. AQI scale: 0–50 Good · 51–100 Moderate · 101–150 Sensitive Groups · 151+ Unhealthy.

PFAS Contamination

Low Detection

PFAS (per- and polyfluoroalkyl substances), known as “forever chemicals,” are a group of synthetic chemicals that persist indefinitely in the environment and human body. The EPA set a maximum contaminant level (MCL) of 4 parts per trillion (ppt) for PFOA and PFOS in April 2024. View national PFAS tracker →

Systems Tested

152

PFAS Detected

Detection Rate

18.4%

Exceeding MCL (4 ppt)

0(0.0%)

0%Detection rate: 18.4%100%

Highest recorded level: 3 ppt (EPA MCL: 4 ppt). One of few states with no documented above-MCL detections in UCMR 5 data

Data source:EPA Safe Drinking Water Information System (SDWIS), Lead and Copper Rule monitoring data. Lead levels represent 90th percentile results from the most recent monitoring period. Violations indicate exceedances of EPA action levels requiring corrective action. This tool is for informational purposes only and does not replace your utility's official Consumer Confidence Report.