Throughout the year, Des Moines Water Works receives calls from customers who say their tap water appears milky white or cloudy. In the majority of cases, the cloudy water is caused by harmless air bubbles, but sometimes it can indicate a plumbing issue. Fortunately, determining the cause is as simple as filling up a clear glass with water and setting it on the counter.
- If the water clears from the bottom of the glass to the top, the water has air bubbles. This reaction sometimes occurs when cold water from underground mains enters warmer pipes inside your home. Since cold water holds more dissolved air than warm water, as water warms, air may be released as tiny bubbles when a tap is turned on. The water is safe to drink, the discoloring is just the result of a harmless reaction.
- If the water in the glass clears from the top-down, and white or grey particles settle to the bottom, this may indicate a water plumbing issue. Call Des Moines Water Works at (515) 283-8700 and staff will assist in diagnosing the problem and provide a list of qualified plumbers.
For more information on water quality, visit www.dmww.com/water-quality.