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Sumas-Blaine surficial aquifer long-term ambient groundwater monitoring

The Sumas-Blaine Aquifer was identified as one of the most severely contaminated aquifers in Washington state, and this program provides a broad-brush annual assessment of groundwater quality over time. We have been studying groundwater in the Sumas-Blaine aquifer for over 25 years. We currently sample 25 wells annually for nitrate, chloride, and bromide.

Annual ambient groundwater monitoring study

A scientist stands in an area with ivy and rhododendrons. Tubes come out a white pipe in the ground. She takes notes, a sample cooler at her feet.

The Sumas-Blaine Aquifer was identified as one of the most severely contaminated aquifers in Washington. We have been conducting a long-term ambient groundwater monitoring program in this surficial aquifer since March 2009.

This study is designed to build on previous monitoring efforts to provide an annual assessment of the status of nitrate and related compounds in groundwater. Twenty-five wells are sampled annually for nitrate, chloride, and bromide. This project will continue as long as funding is available.

Environmental Information Management database Study ID: MRED001