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National Drinking Water Database


Beryllium (total) in Delaware


Beryllium is a metal associated with metal refineries and combustion of fossil fuels, especially coal burning; it is released into the environment from electrical, aerospace and defense industries. [read more]

The Most Polluted Communities in Delaware

22 water utilities reported detecting Beryllium (total) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Beryllium (total) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Sussex Manor Mobile Home Park
Laurel, DE
2792 of 21.1 ppb
(0.9 to 1.3 ppb)
2Dove Estates
Ridgely, DE
1112 of 21.08 ppb
(1.05 to 1.1 ppb)
3Swann Estates
Bishopville, DE
2251 of 11 ppb
(1 ppb)
4Broadkiln Beach Water Company
Milford, DE
1,4401 of 10.9 ppb
(0.9 ppb)
5Laurel Village Mobile Home Park
Lewes, DE
9182 of 20.88 ppb
(0.65 to 1.1 ppb)
6Homestead Park
Pittsville, DE
2301 of 10.7 ppb
(0.7 ppb)
7Lewes Board of Public Works
Lewes, DE
9,2003 of 30.67 ppb
(0.5 to 0.85 ppb)
8Webbs Landing
Dover, DE
1051 of 10.5 ppb
(0.5 ppb)
9Love Creek Woods
Dover, DE
1861 of 10.5 ppb
(0.5 ppb)
10Avalon Woods Owners Assoc Inc
Georgetown, DE
3061 of 10.5 ppb
(0.5 ppb)

Health Based Limits for Beryllium (total)

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.1 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.4 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.4 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.70 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.30000 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.30000 ppb

Violation Summary for Beryllium (total) in Delaware

There are no violations reported for this contaminant in Delaware