On October 11th, the Town of Mooresville experienced very heavy rains due to Tropical Storm Michael. Unofficial estimates from rain gauges at Town facilities ranged from 3.75″ to 6″ between midnight and 3 p.m. As a result, the town had two discharges of untreated wastewater.
One was an estimated 2,250 gallons at Reed Creek Pump Station, 253 Golf Course Drive, which discharged to Reeds Creek. The other was of 200,000 gallons al the Rocky River Wastewater Treatment Plant, 269 Johnson Dairy Road, which discharged to Dye Creek Branch. As is typical of discharges during extreme storm events, a sizable portion of the untreated wastewater was rainwater that had entered the system near swelled creeks or in low lying areas. Neither of the spills were of a magnitude to cause immediate danger to human health or the environment.
North Carolina General Statute 143-215.1C requires the owner or operator of any wastewater collection or treatment system to report when ao untreated wastewater discharge of 1,000 gallons or more reaches surface waters. The North Carolina Department of Environmental Quality, Water Resources Division was notified of the spills on October 11 and is reviewing both incidents.
If you live in the area and you are on a well, officials recommend checking to see if your water was contaminated by using a field testing kit, and consider installing a reverse osmosis filter on any faucet used for drinking water.