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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Silicon


Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

Silicon is an abundant natural element that has multiple applications in production of glasses, cements, and ceramics and in semiconductor industry.

 
Detected
Found above
health guidelines
Found above
legal limit
States
1
-
-
Water utilities
1
-
-
People Served
60,000
-
-

Silicon Exposure by State

Water utilities in 1 states have reported detecting Silicon in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Silicon contamination
SystemsPopulation
Montana160,000
Total160,000

The Most Polluted Communities

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

Ranked by highest average Silicon level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1City of Great Falls
Great Falls, MT
60,0001 of 19000 ppb
(9000 ppb)

Testing Summary for Silicon

Are tests routinely required for Silicon by federal law?No
Water suppliers reporting tests for Silicon (2006-2006):1 of 47,576
Average testing rate for water supplier reporting tests (2006-2006):1.0 per year