Color and Sediment

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Why do my ice cubes appear cloudy?

Ice cubes made with tap water are seldom perfectly clear, for a perfectly good reason. The water served in our area contains dissolved calcium and other naturally occurring minerals. When the water is frozen, the minerals turn into harmless solid white particles that make the water appear cloudy.

What causes rusty water?

Reddish or rusty water is a common result of older pipes in your home. When water stands in the pipes for long periods of time (including overnight), fine particles of rust may accumulate. Another possible cause may be a rusting hot water heater. The problem can easily be solved by letting the water run for a few minutes to clear out the pipes. Rusty water is not a health hazard, but you may want to avoid doing laundry with the rusty water to avoid staining.

What if the rusty water doesn't clear up?

When pipelines in the streets are disturbed due to repairs in your area, mineral sediments that have settled in the pipes sometimes break loose and cause rusty or dirty-looking water. The sediments are harmless mineral deposits that naturally occur in water. If the water does not clear after running it for a few minutes, please call Customer Service at (408)279-7900 and make an appointment for a service inspector to investigate the cause.

What causes the bluish stain in my sink?

New copper pipes are usually the culprit. Bluish stains are possible when the copper pipes in your home dissolve slightly into the water. Local hardware stores can provide you with stain removal products. After a few months, the new pipes should develop a mineral scale that reduces the amount of copper dissolving in water. Water supplied by SJWC is optimized to prevent corrosion of copper pipes, and special monitoring programs are in place to make sure the corrosion control measures are working.