Mount Pleasant Waterworks

When temperatures dip below freezing, exposed water pipes and fixtures are at risk of freezing. Depending on the type of pipes you have, the expansion that occurs when water freezes can cause pipes to break. Know where your home's water shut-off valve is and how to use it. For most single-family homes, it's located in the ground near your outdoor spigot, in line with your water meter. It's important to keep the shut-off valve clear of overgrowth and easy to access. In the event of a pipe break or other water leak in your home, you can use this valve to turn off the water supply, which will prevent water damage.

Mount Pleasant Waterworks initiated a Cross-Connection Control Program in accordance with regulations from the South Carolina Department of Health and Environmental Control (SCDHEC). The program was initiated to safeguard public drinking water supply by preventing the water in a customer's plumbing system from flowing back into the public water supply. The Commission requires all irrigation systems be fitted with a reduced pressure backflow prevention device. What is backflow? Backflow can occur when changes in water pressure create a suction effect, which can cause water to reverse flow, to backflow into the public supply.

Mount Pleasant Waterworks has two water sources, ground water from the Middendorf Aquifer and purchased water from Charleston Water System. Drinking water is delivered to homes and businesses through the water distribution system, a network of infrastructure that includes pipes, valves, fire hydrants, treatment facilities, and storage tanks. Each year, we produce a water quality report, also known as the Consumer Confidence Report (CCR). It includes information about where our water comes from and how it's treated.

Mount Pleasant Waterworks owns and operates water mains and wastewater lines in the public right of way, everything up to and including the water meter. We are not responsible for private plumbing systems or the service lines between the water meter and your home. However, customers may enroll in the Service Line Care Program which will allow Mount Pleasant Waterworks to assist with repairs. In the event of water line break inside your house, you will need to turn off the water supply at the main shut-off valve.

Mount Pleasant Waterworks has two water sources, groundwater from the Charleston Aquifer (also known as Middendorf Aquifer) and purchased surface water from Charleston Water System. Your water comes from the Charleston Aquifer, a pristine groundwater source estimated to be more than 50,000 years old. Six wells are drilled at an average of 2,000 feet below the earth's surface and raw water is pumped to four Reverse Osmosis treatment plants and disinfected with chloramines. MPW has a wholesale contract with Charleston Water System to purchase treated surface water to help satisfy the water demand in our service area.

Just minutes from historic Charleston, South Carolina and beautiful area beaches, Mount Pleasant Waterworks (MPW) is one of South Carolina's Best Places to Work. We are a water and wastewater utility serving 38,000 customers in the beautiful and expanding coastal locale of Mount Pleasant. MPW currently operates four reverse osmosis treatment facilities and buys wholesale water from Charleston Water System (CWS). From health and dental coverage to generous vacation time and sick leave, our competitive benefits package is among the best.