About MPW

Water System

Plans for establishing a waterworks system for the Town of Mount Pleasant were inaugurated in September, 1933 while T.G. McCants was mayor. Mayor McCants died during the planning stages, and Mayor W. L. Erckmann saw 

the project to completion. James E. Gibson (manager and engineer of the Charleston Water System) prepared plans and cost estimates for a system that would supply 160,000 gallons of water per day.

On November 15, 1934, in a special Town election, the following question was on the ballot: "Shall the Town of Mount Pleasant, Charleston County, South Carolina, construct and operate a system of water works, and issue self liquidating bonds of the Town of Mount Pleasant, to the amount of fifty-seven thousand ($57,000.00) Dollars…" Following the favorable vote by the citizens of Mount Pleasant (102 ballots in favor and no ballots against), an application was made to the State Public Works Administration (PWA) Board. The federal government (PWA) agreed to underwrite the $75,000 cost to construct a plant through a grant of $18,000 and by issuing $57,000 in bonds (bearing four percent interest).

In October 1935, the Commission began formal operation of a water distribution system from three wells (with a combined capacity of 160,000 gallons per day) with automatic electric pumps, one 100,000 gallon elevated storage tank and one 300,000 gallon steel storage tank which also served as an emergency supply for fire fighting. Two 500- gallon-per-minute pumps (one automatic electric, one gasoline) were installed in the brick pumping station building for fire service protection. The distribution system consisted of 5.8 miles of 2, 6 and 8-inch mains and 21 fire hydrants. At the end of 1935, a total of 179 water meters had been installed to serve the Town's population.

Wastewater System

The public wastewater system began operating in 1942 with an untreated discharge to Charleston Harbor. Expansion took place as the town grew. In the early 1960's, the Commission contracted an engineering firm to design a wastewater collection system expansion under the PL 660 Federal program. In 1969, construction began on the first primary treatment facility capable of processing 1.4 million gallons per day (MGD). The facility and collection system were completed and operations started in June of 1970. This facility was a contact stabilization secondary treatment plant and the first form of wastewater treatment in Mount Pleasant.

In 1976 under Public Law 92-500 EPA Federal Grants Program, the facility was expanded from 1.4 MGD to 3.7 MGD with the addition of flow equalization and converting to conventional activated sludge treatment process. At the same time, four small package plants were taken out of service and flow from these plants was diverted to the expanded Center Street Wastewater Treatment Plant. In 1984 it was determined this facility was not to be expanded beyond its present capacity. Therefore the master plan was developed at the request of the Commissioners to determine how wastewater treatment would be provided beyond the Center Street Plant service area. The Commission purchased 40 acres of land on which future facilities would be built. In 1986, the Commission saw growth starting to take place outside the existing town limits and beyond the sewer service area. In order to stop the proliferation of sewer package treatment plants and to protect the environment, the Commission requested and received from the State of South Carolina the service area expanding to the Wando and Santee rivers.

An outfall line was constructed in 1989, which has an assimilative capacity of 17 MGD. All MPW's treated wastewater is discharged through the outfall line 4,700 feet into Charleston Harbor in the Rebellion Reach Channel for maximum dilution.

A second wastewater treatment plant at Rifle Range Road began operations in May 1994, adding 2.4 MGD treatment capacity to the Commission's system. This plant also made it possible to eliminate the remaining discharges in the Mount Pleasant service area and serve 1,000 residents previously on septic tanks. The plant's aeration system achieves a higher level of treatment than required by the Clean Water Act and the Department of Health and Environmental Control's discharge permit.

A water reuse system was incorporated to minimize the need for potable water in plant operations. The Rifle Range Road Wastewater Treatment Plant plant is equipped with the first East Cooper septage receiving station, which will process waste from septic tank trucks, portable toilets and travel trailers. All features promote a safer, cleaner water environment.

MPW Facts

Population:  We serve a population of over 68,000 people in the Town of Mount Pleasant and other areas East of the Cooper River in Charleston County.
 Accounts: We serve 33,597 water and 29,580 wastewater accounts for a total of 63,177 accounts.
Average Daily Usage (measured in Million Gallons per Day (MGD)):
Water:  8.0 MGD with a permitted capacity of 16.22 MGD  
Wastewater:   6.2 MGD with a permitted capacity of 9.7 MGD
Water and Wastewater Lines:  Water: 530 miles of lines; Wastewater: 620.2 miles of lines;  1150.2 total miles of lines
Wastewater Pumps/Stations:  158 Wastewater Pump Stations, 386 Wastewater Pumps and 143 grinder pumps  
Storage Capacity:  MPW has 12.3 Million Gallons of Water Storage
 Employees:  It takes hard work and over 221,890 man-hours to make it all happen.  Our 113 employees are the heart of our organization.

Mission, Vision, and Goals

Through the unified and committed efforts of each and every employee, Mount Pleasant Waterworks will be a leader in our industry and community.
To provide our customers with water and wastewater services of exceptional
quality and value, while protecting public health and the environment.
Fairness: To our customers, employees, and other stakeholders
Integrity: In all actions by employees and Commissioners
Quality: In our products, services, and processes


Maintain financial stability by recovering all costs of operating, maintaining, improving, and expanding the water and wastewater systems.
Recruit, develop, and retain qualified and committed employees.
Improve customer satisfaction.
Maintain the support of stakeholders by effectively communicating the value of water
through education and outstanding service.
Support the long-term sustainability of the MPW service area.
Operate an efficient and effective utility through the use of technology, processes, and people
Achieve consistent high quality drinking water and wastewater effluent that is in full compliance with all regulations and meets or exceeds customer expectations.
Provide and maintain an efficient infrastructure.
Operate a safe, secure, and resilient utility that is prepared to manage and mitigate all business risks.
Assure that long-term water and wastewater supply and capacity are sufficient to
meet MPW’s customers’ current and future needs.

Mount Pleasant Waterworks Governing Body

Mount Pleasant Waterworks (MPW) empowered by South Carolina Code Section 5-3-210, is governed by five Commissioners elected by the public for staggered terms of six years. The Commissioners, together with the Mayor and the Chairman of the Water Supply Committee of Town Council, constitute the Commissioners of Public Works for the Town of Mount Pleasant.

The Commission was established as a body politic and corporate whose principal functions are to acquire supplies of fresh water, capable of being used for domestic and commercial purposes, and to distribute such potable water for domestic and commercial use within its service area; and to build, acquire, construct, operate and maintain such wastewater treatment and collection facilities as the Commission deems necessary.

The Commissioners meet monthly, normally the third Monday at 6:00 p.m. Meetings are held at the MPW Operations Center Public meeting room and are open to the general public. There are two standing committees of the Commission; the Personnel Committee and the Cost Recovery Committee. These committees meet on an as needed basis.

The financial affairs of the organization are administered by the Commissioners which have full control and management of the system. The Commissioners elect three officers in compliance with State law. There are no limits on terms of service. The current Commissioners are as follows:


Rick Crosby
Year First Elected 1998
Term Expires 2019


Diane D. Lauritsen, Ph.D.
Year First Elected 2002
Term Expires 2015


Susan I. Mellichamp
Secretary Treasurer
Year First Elected 2011
Term Expires 2017


Mac Jenkinson
Year First Elected 2009
Term Expires 2015



John Burn
Year First Elected 2013
Term Expires 2019




Mark Smith
Town of Mount Plesant Water Supply Committee Chair
Year First Elected 2013
Term Expires 2017

Linda Page
Town of Mount Pleasant
Year First Elected 2013
Term Expires 2017





To contact the Commissioners of Mount Pleasant Waterworks please use one of the following methods:

Mail:  Mount Pleasant Waterworks Att: Commissioners (or name of Commissioner) PO Box 330 Mount Pleasant SC  29465

Email:  Commissioners@mpwonline.com

In person:  at Regular Commission Meetings generally held the third Monday of each month, please check our meeting schedule for dates and times