Little Rock Residents Concerned About Discolored Tap Water

LITTLE ROCK, Ark. (News release)  –  Central Arkansas Water customers may notice a slight discoloration or an earthy taste and odor in their drinking water due to the “turnover” of Lake Maumelle and Lake Winona. 

As a result of cooler temperatures each year, discoloration or changes in taste and odor may be detectable in the customer’s tap water.  

A Central Arkansas Water spoke person said that during the summer CAW lakes stratify when a warm layer of water forms on the top of the lakes due to high temperatures, while a much cooler layer remains at the bottom of the lakes. As the fall season’s temperatures cause the top layer to cool, the upper and lower layers turnover, or mix together. 

When this natural process occurs, it can cause subtle changes in taste and, at times, short durations of discolored water, created by increased manganese levels in the water due to the mixing.

CAW continuously monitors water quality and treatment processes during this season, 
and adjusts its processes to ensure the drinking water remains safe to drink and remains in compliance with federal and state regulations.

Customers with questions about this process may call 223.1574.


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