The City of Dinuba, through the California State Water Resources Control Board’s Proposition 1 Groundwater Sustainability Grant Program, will perform a planning study that will investigate options to clean up and/or prevent the spread of certain pollutants in the City’s municipal groundwater supply. The pollutants include nitrates from agricultural fertilizer and municipal wastewater; the soil fumigant dibromochloropropane (DBCP); and another constituent of soil fumigants, 1,2,3-Trichloropropane (TCP). These pollutants occur in the region’s shallow aquifers as a result of widespread land use and wastewater management practices that were generally considered acceptable but over time, have resulted in groundwater degradation.
The study will identify options for projects that can be funded under future implementation grants to aid in assuring a more secure and higher quality water supply for City residents, and to serve as an example of projects that can be undertaken to protect and improve public drinking water supplies in similar agricultural settings. The total cost of the study will be approximately $1.97 million, and the grant is for $1.77 million, with the balance being provided by the City as a local match consisting of both labor and cash payments.