A week following a boil water notice in the Five Cities area, San Luis Obispo County is still investigating the cause of the contamination. While that order has been lifted for the communities of Arroyo Grande, Grover Beach, Oceano, Pismo Beach and Avila Beach, some residents are still taking precautions. … Nola Engelskirger from San Luis Obispo County Public Works says she understands people’s concerns, but now that the notice is lifted, there is nothing to worry about. “People should know their water is safe. It is meeting all drinking water standards. The boil water notice was lifted, and right now we are doing everything we can to take precautions to not have that happen again,” she said.