The Power of Information

National Drinking Water Database


Manganese in Virginia


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

The Most Polluted Communities in Virginia

21 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)
1Valley Mills Crossing
Bedford, VA
501 of 13000 ppb
(3000 ppb)
2Maury Service Authority
Lexington, VA
251 of 13000 ppb
(3000 ppb)
3Elysian Heights
VA
2851 of 12400 ppb
(2400 ppb)
4Mountain View Shores Subdivision
Bedford, VA
4051 of 12000 ppb
(2000 ppb)
5Delaney Court
Salem, VA
2241 of 11000 ppb
(1000 ppb)
6Giles County Psa
Pearisburg, VA
252 of 4750 ppb
(0 to 2000 ppb)
7High Point Subdivision
Bedford, VA
6481 of 3666.67 ppb
(0 to 2000 ppb)
8Town of Narrows
Narrows, VA
2,5183 of 6666.67 ppb
(0 to 1500 ppb)
9Town of Amherst
Amherst, VA
5,0762 of 3666.67 ppb
(0 to 1000 ppb)
10Town of Glasgow
Glasgow, VA
1,0401 of 1666.67 ppb
(666.67 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 Virginia

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

Violation TypeNumber of Violations
Failure to monitor regularly22