After years of struggling to meet federal guidelines for the allowable level of tri-halo-methanes in the municipal water supply, city officials are pleased with the first unofficial results of testing completed since the new water treatment plant came on-line earlier this year.
Mayor Nathan Johnson says before the new water plant was operational, much of the city’s water came from surface intakes located in the Missouri River that are prone to producing water that results in higher THM levels.
Johnson says the current test levels came in well below the threshold of eighty parts per billion.
Johnson says the design of the new water plant and using water from collector wells under the Missouri River are responsible for the lower THM levels.
Johnson says the new test results need to be confirmed by the South Dakota Department of Environment and Natural Resources.