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National Drinking Water Database


Manganese in Alaska


Manganese is a naturally occurring element released from mineral deposits as well as industrial use.

The Most Polluted Communities in Alaska

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

Ranked by highest average Manganese level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Circle Washeteria
Circle, AK
1001 of 13290 ppb
(3290 ppb)
2North Star Rent.3152 Wyatt
North Pole, AK
251 of 11750 ppb
(1750 ppb)
3Napaskiak Water System
Napaskiak, AK
3671 of 11370 ppb
(1370 ppb)
4Sheena May Estates
Wasilla, AK
741 of 1991 ppb
(991 ppb)
5North Star Rent.2545/2555 Mission
North Pole, AK
921 of 1782 ppb
(782 ppb)
6Akiachak Water System
Akiachak, AK
5601 of 1744.5 ppb
(744.5 ppb)
7Kiana Water System
Kiana, AK
3851 of 1657 ppb
(657 ppb)
8Creekwood Apartments Limited Partnership
Palmer, AK
1922 of 2628.5 ppb
(107 to 1150 ppb)
9Blackburn Place Apartments
Glennallen, AK
561 of 1529 ppb
(529 ppb)
10Huslia Public Water Supply
Huslia, AK
2931 of 1457 ppb
(457 ppb)

Health Based Limits for Manganese

StandardDescriptionLevel
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.50 ppb
National Secondary Drinking Water RegulationsA National Secondary Drinking Water Regulation is a non-enforceable guideline regarding contaminants that may cause cosmetic effects (such as taste, odor, or color). Some states choose to adopt them as enforceable standards. Source: U.S. Environmental Protection Agency. 50 ppb
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.300 ppb
Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.300 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.1000 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.1000 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.1600 ppb

Violation Summary for Manganese in Alaska

There are no violations reported for this contaminant in Alaska