16 Stories
Posted on: May 19, 2016

Key Milestone Reached in $51 Million West Ashley Sewer Tunnel Replacement Project

Tunnel Boring Machine breaking through in West Ashley

(May 19, 2016)—After spending six months deep underground, a tunnel boring machine has finished drilling a new 1.6-mile tunnel that will soon carry millions of gallons of wastewater daily from West Ashley to the Plum Island Wastewater Treatment Plant on J...Read on...

Additional Info...
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: January 29, 2016

FAQs About Lead and Drinking Water

The crisis in Flint, Michigan is drawing national attention to lead plumbing and how utilities prevent lead from leaching into tap water.

Charleston Water System controls the corrosion of lead plumbing by adjusting the properties of our water, and our ...More...

FAQs about lead
Posted on: March 14, 2016

Work Begins on 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 begin in mid-March and is expected to be complete in Aug...More...

Visit the project page for information and updates
Posted on: February 15, 2016

Planned Water Outages in Downtown Charleston

Over the next several months, Charleston Water System will be scheduling water outages for work related to our Downtown Water Main Rehab Project.

View list of planned outages

Affected customers will be notified directly with door hangers and/or pho...More...

Downtown Water Main Rehab Project
Posted on: February 17, 2016

7,000 North Charleston Customers Getting New Automated Water Meters

A contractor for Charleston Water System is installing new automated meters for some customers in North Charleston. View an interactive map of the project area

The work is being completed by Vanguard Utility Service, Inc.. Affected customers will be ...More...

View an interactive map of the project area
Posted on: January 14, 2016

Downtown Water Main Improvements

Next week, work will begin on a project to rehabilitate two miles of 100-year-old water main in downtown Charleston to improve fire protection and service reliability.

Sections of pipe on Rutledge Avenue and Congress, Race, Carolina, and Bogard Streets...More...

Project information
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: November 23, 2015

2016 Water and Sewer Rates

On January 1, 2016, Charleston Water System’s water and sewer rates will increase by an average of 4.5% and 4.75%, respectively.

The rate increases are averages because the exact percentage increase depends on how much water you use, where you live, and th...


Posted on: October 30, 2015

Construction Details Update

(10/30/2015) - On Monday, November 2nd, CWS will update its water system and sanitary sewer system construction details that are available online. The details have been updated to reflect current requirements of CWS’s Minimum Standards. Additionally, in o...More...

Posted on: August 6, 2015

Charleston Water Named a "Best Place to Work" for Fifth Consecutive Year

Charleston Water System is one of 50 companies from across the state recognized as "Best Places to Work in South Carolina."

The annual award program is sponsored by the SC Chamber of Commerce, SC Biz, and the Best Companies Group and recognizes the st...More...

Best Places to Work in SC
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 Wate...More...

Moody's Announcement
Posted on: July 1, 2015

2014 Financial Reports Now Available

2014 Popular Annual Financial Report - Charleston Water System

Charleston Water System’s 2014 Comprehensive Annual Financial Report (CAFR) and Popular Annual Financial Report are now available.

The CAFR provides an in-depth look at CWS’s financial position, including the auditor’s report, an analysis of our annua...More...

Financial Information
Posted on: November 20, 2014

2015 Water and Sewer Rates

(November 20, 2014)—On January 1, 2015, Charleston Water System’s water and sewer rates will increase by an average of 4.5% and 4.75%, respectively.

The rate increases are averages because the exact percentage increase depends on how much water you use, wh...


Posted on: November 26, 2013

New Capital Improvements Program and 2014 Rates

(November 26, 2013)—Charleston Water System’s Board of Commissioners has approved a $141.5-million Capital Improvements Program and a three-year series of rate increases to fund critical infrastructure needs as well as continued funding of annual operatio...


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