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National Drinking Water Database


Toluene in Alaska


Toluene is a pollutant from petroleum refineries and a chemical used in plastics manufacturing as well as the pharmaceutical, paint and furniture industries. [read more]

The Most Polluted Communities in Alaska

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

Ranked by highest average Toluene level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Nsbu - Point Lay
Barrow, AK
2278 of 82.74 ppb
(0.6 to 5.8 ppb)
2Nsbu - Point Hope
Barrow, AK
8345 of 81.18 ppb
(0 to 2.51 ppb)
3Akutan
Anchorage, AK
1051 of 31.13 ppb
(0 to 3.4 ppb)
4Creekwood Apartments Limited Partnership
Palmer, AK
1922 of 70.93 ppb
(0 to 5.8 ppb)
5Ykhc Hospital - Bethel
Bethel, AK
5101 of 30.8 ppb
(0 to 2.4 ppb)
6Nsbu - Anaktuvuk Pass
Barrow, AK
3243 of 60.61 ppb
(0 to 1.92 ppb)
7Wasilla Water System
Wasilla, AK
13,8722 of 60.57 ppb
(0 to 3.17 ppb)
8Noorvik Water System
Noorvik, AK
6002 of 50.51 ppb
(0 to 1.92 ppb)
9North Star Rent.2490 Mission
North Pole, AK
253 of 70.41 ppb
(0 to 1.41 ppb)
10Tatitlek Water System
Tatitlek, AK
951 of 70.41 ppb
(0 to 2.84 ppb)

Health Based Limits for Toluene

StandardDescriptionLevel
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.150 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.1000 ppb
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.1000 ppb
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.1300 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.2000 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.7000 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.20000 ppb

Violation Summary for Toluene in Alaska

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Alaska since 2004

Violation TypeNumber of Violations
Failure to monitor regularly233