The city of Camdenton’s Mulberry Well is located about 600 feet southeast of the Modine property and 1,000 feet south of the former City Lagoon #3. The Mulberry Well was the highest producing well of Camdenton's public drinking water system, supplying approximately 2,107 people. In March 1993, TCE was first discovered by the Missouri Department of Health in the city of Camdenton’s Mulberry Well, at a level below the maximum contaminant level (MCL) for drinking water (five parts per billion, ppb). The department analyzed samples collected by the city of Camdenton in April 1994 and TCE was not detected. As required by the three-year monitoring cycle for volatile organic compounds, the well was next sampled in January 1997 and TCE was detected below the MCL at 3.8 ppb. The Mulberry Well continued to be sampled quarterly in 1997; all the results were below the MCL. In February 1998, TCE was first detected above the MCL at 6.3 ppb.
Due to the TCE contamination, the city officially took the Mulberry Well offline in February 1999. At that time, the Mulberry Well showed TCE at 26.2 ppb and a monitoring well located immediately near the lagoon contained TCE at 1,400 ppb. The Mulberry Well is no longer connected to the city's water supply system and is not used for drinking water. With the department's approval, a water permit was issued to the city so the well could be periodically pumped, treated and discharged to a nearby tributary. This is being done to maintain hydrologic control of the contamination, to prevent the contamination from spreading to the other city wells. The water permit requires regular sampling and allows a discharge limit of up to 80 ppb. Currently, the well water is below the discharge limit.
For Public Drinking Water Volatile Organic Compounds Annual Results, click here. (posted 02/09/18)