Lynnfield’s drinking water is sourced from groundwater. Here is some information about the specific challenges of using groundwater and the types of contaminants that the Water Department works to filter out of the water supply.
Groundwater: Frequently Asked Questions — Massachusetts Department of Environmental Protection
Drinking Water Advisory for Manganese — U.S. Environmental Protection Agency
Tap Water Database featuring a breakdown of contaminants found in public water systems nationwide — Environmental Working Group