Contact Us OUR BUSINESS HOURS ARE: Monday – Friday 9:00 AM – 4:00 PM Closed from 12:00 PM – 1:00 PM for lunch. If you have an emergency and are unable to contact us, please leave us a voicemail with your name and number, and we will return your call as soon as possible! Office Phone Number (318) 594 – 9067 Email Address columbiahgtswater@chwd.us Mailing Address Post Office Box 631Columbia, Louisiana 71418 Water Plant Physical Address *OUR OFFICE IS NOT BASED HERE*167 Water Plant RoadColumbia, Louisiana 71418