Mountain View officials have lifted boil-water restrictions for the remaining 21 homes affected by a water main contamination near Cuesta Park.
Working with the California State Water Resources Control Board, city officials said in an advisory late Tuesday that testing showed the water line serving the homes was free of coliform bacteria in two consecutive sampling events.
Residents were advised to flush household plumbing under the instructions provided with the termination notice. The city said plumbing assistance would be available for households needing help with the process.
The 21 homes were the last affected properties after boil-water restrictions were lifted on May 6 for 46 of the original 67 impacted homes. The affected households have now been reconnected to the water system.
Bottled water deliveries for the remaining households are expected to continue through May 27 to help residents transition back to normal service. Temporary lodging, meal and incidental payments, and shower access will continue through Wednesday, with hotel checkout available through Thursday, city officials said.
They added that temporary above-ground pipelines will begin to be removed, followed by roadway and sidewalk repairs.
The contamination began on April 24 when some cement slurry mix came into contact with a live water main near Bonita Avenue and Cuesta Drive during work by a private contractor hired by the city.