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A printable guide PDF PDF PDF PDF that covers well construction, maintenance, and water quality protection for private well owners in Napa County.
Napa County has a Groundwater Self-Monitoring Program. This DIY program offers training and a special Solinst measuring device to determine the depth to water in most wells.
Learn about well basics, water safety, sites, testing, and maintenance of private wells on this website from the Centers for Disease Control and Prevention (CDC).
Learn about your well, maintenance, and removing chemicals from your water in this video series.
Download a copy of the NGWA Well Owners Guide about well construction, routine maintenance, water testing, and more.
The Voluntary Groundwater Level Monitoring Program measures groundwater levels in spring and fall. These measurements improve the understanding of groundwater for both the well owner and the County.