9 Stories
Posted on: December 19, 2016

Charleston Water System begins construction on new waterline

Ashley Project Map.jpg

Charleston Water System (CWS) will begin work on a new waterline this month. The waterline will stretch approximately 2.8 miles, from near the corner of Montague Avenue and Dorchester Road in North Charleston, to near the intersection of Ashley River Road...

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Posted on: November 2, 2016

Charleston Water System, Mount Pleasant Waterworks reach historic milestone

The Charleston Water System (CWS) and Mount Pleasant Waterworks (MPW) signed a thirty-year extension on their intergovernmental wholesale water purchase agreement on Tuesday, November 1st. The agreement extends the existing contract, wherein MPW buys wate...Read on...

Posted on: October 20, 2016

Charleston Water System recognized for high level of water treatment performance

CHARLESTON, SC – Charleston Water System’s (CWS) Hanahan Water Treatment Plant has received the Presidents Award from the Partnership for Safe Water (Partnership). The Presidents Award recognizes utilities nationally for exceptional performance meeting st...Read on...

Posted on: September 29, 2016

2017 budget passed by CWS Board of Commissioners, no rate increase for the new year

Charleston Water System’s (CWS) Board of Commissioners approved the 2017 fiscal year budget today at its regular meeting. In the approved budget, retail water and sewer customer rates remain the same as the 2016 rates. The newly approved budget of $132,85...Read on...

Posted on: April 19, 2016

Annual Water Quality Report Now Available

Every year, Charleston Water System produces a report on your drinking water quality. This report summarizes the water testing results from the previous year and whether we met all regulatory requirements. The report also includes information about where ...Read on...

2015 Annual Water Quality Report
Posted on: March 14, 2016

Cannon and Spring Water Main Replacement Project

Charleston Water System is replacing the aging water mains in Spring and Cannon Streets in downtown Charleston in conjunction with the City of Charleston’s streetscape project.

Construction will began mid-March and is expected to be complete in the fi...More...

Visit the project page for information and updates
Posted on: December 30, 2015

Impact Fee Increases & Important Policy Changes for New Development

Charleston Water System’s Board of Commissioners recently approved changes to the Unit Contributory Loading for an Equivalent Residential Unit as well as a three-year incremental increase for impact fees. These changes only affect new development.



Posted on: July 13, 2015

Charleston Water System Earns Triple-A Rating from Moody’s, S&P

Replacement of this 110-year-old settling basin is one of the 18 projects included in the CWS's Capital Improvements Plan

Charleston Water System has earned the highest possible bond ratings from Moody’s and Standard & Poor’s and is now one of only 10 combined water and wastewater utilities in the nation to hold an Aaa rating from Moody’s.

Moody’s upgraded Charleston ...More...

Moody's Announcement
Posted on: February 5, 2013

Charleston Water Awards $50.8 Million Construction Contract for Final Phase of Sewer Tunnel Project

Construction will soon begin on the fifth and final replacement phase of the deep tunnel system that collects raw sewage—not stormwater—and carries it to Charleston Water System’s wastewater treatment plant.

On January 29, 2013, Charleston Water’s Boa...More...

Sewer Tunnel Replacement Project