State officials say five area utility districts, including one locally, violated federal drinking water standards in 2017 regarding elevated levels of haloacetic acids (HAA5), a byproduct of water sanitization. The U.S. Environmental Protection Agency allows for 60 parts per million of HAA5 in drinking water, or .060 mg/L. elevated levels of haloacetic acids(EPA) says long-term exposure to the higher levels can increase cancer risks. State regulators say the following districts tested positive in 2017 for elevated levels of haloacetic acids (HAA5), a byproduct of water sanitization:
Rockwood Water, Sewer and Gas in Roane County – 1 test (.064)
Hamblen County’s Witt Utility District – 3 tests (.0708, .066, .069)
Oneida Water in Scott County – 3 tests (.0652, .064, .061)
West Knox Utility District in Knox County – 1 test (.062)
Alcoa Water System in Blount County – 1 test (.061)
Officials with the Rockwood Water, Sewer and Gas say they believe they are now within the allowed levels. Customers of the water utility should have received a letter regarding the elevated levels.