Texarkana Water Utilities customers in both Texarkanas will soon receive notices of past contamination problems in the cities’ drinking water.

In the spring, treatment chemicals reacted to high levels of organic matter in the water and produced trihalomethanes, which are known to cause health problems if ingested over a long period of time.

Thanks to changes in the water treatment process, recent water tests have been fine. But because test results are averaged over a year, TWU will have to notify customers one more time that the annual contaminant average was above EPA...

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