The Power of Information

National Drinking Water Database

MTBE in Arkansas

MTBE (methyl tert-butyl ether) is a fuel additive that had been used as an octane enhancer in unleaded gasoline; it contaminates groundwater due to spillage or leakage at gas stations, and has been banned or scheduled for phaseout in most states.

The Most Polluted Communities in Arkansas

17 water utilities reported detecting MTBE in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average MTBE level

RankSystem Population Served Positive test results of total reported tests Average Level
1Collins Water Association
Dermott, AR
2411 of 11.06 ppb
(1.06 ppb)
2Walnut Ridge Waterworks
Walnut Ridge, AR
5,9811 of 10.89 ppb
(0.89 ppb)
3Beebe Waterworks
Beebe, AR
4,9506 of 80.78 ppb
(0 to 1.41 ppb)
4Leisure Hills Homeowners Assoc
Lakeview, AR
1331 of 110.41 ppb
(0 to 4.5 ppb)
5Greenway Waterworks
Greenway, AR
4441 of 110.24 ppb
(0 to 2.67 ppb)
6Russell Waterworks
Russell, AR
2751 of 100.24 ppb
(0 to 2.39 ppb)
7Maumelle Water Corporation
Roland, AR
2,2011 of 40.18 ppb
(0 to 0.72 ppb)
8Oakwood Mhp Waterworks
Jacksonville, AR
251 of 50.17 ppb
(0 to 0.86 ppb)
9Horseshoe Bend Waterworks
Horseshoe Bend, AR
2,2781 of 140.17 ppb
(0 to 2.37 ppb)
10Batesville Water Utilities
Batesville, AR
10,7521 of 60.16 ppb
(0 to 0.95 ppb)

Health Based Limits for MTBE

California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.13 ppb

Violation Summary for MTBE in Arkansas

There are no violations reported for this contaminant in Arkansas