TY - RPRT TI - Prediction of the probability of elevated nitrate concentrations at groundwater depths used for drinking-water supply in the Puget Sound basin, Washington, 2004–19 AU - Robert W. Black AU - Elise E. Wright AU - Valerie A.L. Bright AU - Alexander O. Headman PY - 2023 DO - 10.3133/sir20235117 UR - https://pubs.usgs.gov/publication/sir20235117 ID - sir20235117 ER -