Federal officials have announced an additional $1.7 million grant for the construction of Pure Water Oceanside, a project that will turn wastewater into a new local source of drinking water beginning in 2022.

The recycling project is expected to provide more than 32 percent of Oceanside’s water supply, or between 3 million and 5 million gallons per day.

It would be the first operating project of its type in San Diego County, though others are planned or being built.