The city of Mesa is warning its water customers in certain areas of the city that they could see some cloudiness in their water supply through January but that the water supply remains safe.

Residents in the areas east of Loop 101 to Val Vista and north of Baseline Road may experience cloudy water due to temporary switches from surface water to well water as the city performs routine treatment plant maintenance, according to a press release.

“Dissolved air is often found trapped in groundwater,” Ken Marshall, Mesa water quality supervisor, said in the press release. “Our water distribution system is pressurized, causing any air that is present in groundwater to remain dissolved in the water until the pressure is released at the customer’s tap. Dissolved air can cause water to have a cloudy or milky appearance, but it is safe to drink and will not damage plumbing or appliances.”

The Val Vista Water Treatment Plant has maintenance scheduled through February, when it will return to its regular service, according to the city.