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Towers at the Lake Murray Dam
The Joint Municipal Water and Sewer Commission water tower
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News & Events



***Please note all previous usernames and passwords are no longer valid

We are excited to announce our new and improved online bill pay service with Invoice Cloud which has more features than before, including the ability to set up automatic payments with a credit card. The service is free and the simple interface will make it easy to view and pay your bill.

Online Payment Highlights:

  • View your bill and make a payment 24/7
  • Sign up for automatic payments – credit card or electronic check
  • Schedule your payment for a specific future date
  • Receive email notifications when your bill is ready, before the due date and when a scheduled or automatic payment is pending
  • Go paperless – receive your bill electronically

You’ll have the option to register with the new system to have access to view current and past bills, save payment information, if desired, enroll in automatic payments and more. Or, you can choose to make a one-time payment without registering

If you have questions, please email or call (803) 359-8373 - we are always happy to help!



Information Regarding Recent News Coverage of West Columbia Water System


There is no greater responsibility we have than delivering safe drinking water to our community, and we are vigilant in protecting the public health of our neighbors and families that we serve. 

The Joint Municipal Water and Sewer Commission (JMWSC) delivers water that has been treated by the City of West Columbia at its Lake Murray Water Treatment Plant.  Although we do not have direct authority over the processes and operations at the treatment plant, we work with SC Department of Health and Environmental Control (DHEC) and the City to monitor water quality.   Our understanding from the SCDHEC statement is that there is no imminent cause for concern.   We encourage the City to continue pursuing the investments necessary to correct the issues noted by DHEC in its annual review of the plant operations.

Public safety is our top priority, and there are measures of water quality assurance that JMWSC takes every day as a regular course of operation in our own system.  Although these are standard processes for any water system, they are especially vital to us at JMWSC as we recognize that we are the direct connection between our customers and their drinking water.  Our staff employ a variety of important steps on a regular schedule to keep us informed of the quality of water we supply to your tap.  This includes collecting water samples for water quality testing from locations across our system, opening fire hydrants at various locations across our system to “flush” the lines and keep fresh water flowing into the system, and routine storage tank maintenance.  

We are proud to deliver quality drinking water to you and your family, not only because it is our responsibility, but because we also rely on it for our own families and friends.  Monitoring and communicating with the City and DHEC are important in ensuring the safety of the service we provide.  You have our continued pledge to stay engaged and alert.   If you ever have any questions or concerns about your drinking water, we encourage you to contact us.  We are here to serve you.



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