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National Drinking Water Database


Molybdenum in Nevada


Molybdenum is a byproduct of copper and tungsten mining, and is used as an alloy for various metals; it also occurs naturally in soil and rock.

The Most Polluted Communities in Nevada

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

Ranked by highest average Molybdenum level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1City of Henderson
Boulder City, NV
246,0007 of 75.4 ppb
(5 to 6.2 ppb)
2Searchlight Water Company
Las Vegas, NV
7603 of 34.83 ppb
(4.5 to 5 ppb)
3Nellis Air Force Base
Nellis Afb, NV
6,2886 of 63.1 ppb
(1 to 5.71 ppb)
4Jean Utility Services Inc
Las Vegas, NV
6003 of 32.89 ppb
(2.67 to 3 ppb)
5Las Vegas Valley Water District
Las Vegas, NV
1,181,26315 of 161.94 ppb
(0 to 4 ppb)
6Kyle Canyon Water District
Las Vegas, NV
1,0406 of 81.88 ppb
(0 to 5 ppb)
7City of North Las Vegas Utilities Department
N Las Vegas, NV
282,6002 of 71.16 ppb
(0 to 5.1 ppb)
8Blue Diamond Water Company
Las Vegas, NV
3103 of 40.75 ppb
(0 to 1 ppb)

Health Based Limits for Molybdenum

StandardDescriptionLevel
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.40 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.40 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.80 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.80 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.200 ppb

Violation Summary for Molybdenum in Nevada

There are no violations reported for this contaminant in Nevada