Colleyville and other area cities continue to spread the message to residents that despite an odd taste and look to their water, it is safe to drink.

The Trinity River Authority issued a statement in July explaining that the earthy or musty taste to tap water in Colleyville, Grapevine, Bedford, Euless and North Richland Hills is the result of two harmless compounds found in algae. Those compounds' concentrations increase during the summer as Lake Arlington, TRA's raw water source, heats up.

Southlake also encouraged residents to drink up after the City of Fort Worth issued a similar statement about water coming from the North Holly and South Holly water treatment plants.

Southlake and Westlake both purchase water from Fort Worth, and residents there began reporting odd-tasting water in mid-July.

Fort Worth hopes to fix part of the problem by the end of August, when new ozone disinfection systems already in use at two other city treatment plants should be operational at the Holly stations.