Culligan of Kennewick For over 70 years, Culligan's mission has been to deliver high-quality water treatment products that will benefit every part of our customers' lives. We hope to raise the quality of life by purifying its most essential element: water. We've seen about every water problem imaginable and we've solved these problems to deliver the refreshing, clean and pure water that's become our hallmark. Free of contaminants and minerals, water treated with Culligan softeners or filtration systems will make an impression on you and your household or work. Proudly Serving These Locations Near You Culligan of Kennewick proudly serves your local area, such as the cities and towns listed below. Kennewick WA Pasco WA Richland WA West Richland WA Prosser WA Connell WA Benton City WA Finley WA Mesa WA Kahlotus WA Just pick up the phone and say "Hey Culligan Man!"