Free water deliveries have started for some San Joaquin Valley residents with nitrate contaminated wells.

But advocates worry that nine months into the state’s nitrate control program, outreach has been lacking and not enough wells have been tested.

The nitrate control program launched in May of 2021. It offers free water deliveries for residents whose wells test over the limit for nitrates. The program is mandated by the State Water Resources Control Board and funded by nitrate polluters throughout the valley.