The District of Columbia Water and Sewer Authority introduced new water conservation recommendations on Wednesday as the city heads into its driest summer in decades.

These measures follow a drought watch warning by the Metropolitan Washington Council of Governments’ Drought Coordination Committee. The council, comprised of elected officials from 24 local governments, now recommends “voluntary water conservation through wise water use.” A warning is the second-most serious level in the council’s four-tiered Regional Drought Response Plan.