Plumbing companies in Columbia, MO
Quick answer
2 plumbing companies have a local office in Columbia, MO on 1-800Deals: Mr. Rooter Plumbing of Columbia Missouri and Roto-Rooter Columbia, MO. Columbia's water is pumped from wells that tap a water-filled bed of sand and gravel beneath the bottomland bordering the Missouri River. Even after lime softening, Columbia's water tested at 187 mg/L of carbonate hardness in the sample reported in the City's 2025 Water Quality Report.
Last updated September 28, 2026. Sources are linked below.
Plumbing companies serving Columbia and nearby Boone County communities, with the services and service areas each one lists. We list 2 companies with a local office here:
- Mr. Rooter Plumbing of Columbia Missouri, , Columbia. Services include plumbing, emergency plumbing, sewer repair, leaking pipes, drain cleaning, clogged drains; serves Ashland, Butterfield, Centertown, Centralia, Clark, Columbia, Fulton, Hallsville, Harrisburg, Hartsburg and more.
- Roto-Rooter Columbia, MO, 5904 Brown Station Rd, Columbia. Services include drain cleaning, emergency plumber, water heater repair, water damage, commercial plumbing, hydro jetting; serves Millersburg, Columbia, Fulton, Osage Bend, Mexico, Jefferson City.
What to know about plumbing in Columbia
Wells in the Missouri River bottoms
Columbia's water is pumped from wells that tap a water-filled bed of sand and gravel beneath the bottomland bordering the Missouri River. The wells average 110 feet deep, and the aquifer holds about 44 billion gallons that are constantly replenished by groundwater. At the treatment plant, lime reacts with the dissolved calcium and magnesium and removes 50 percent of the hardness-causing minerals before the water reaches more than 51,000 customers. Questions about your service can go to the Water Distribution Office at 573-874-2489. Source: City of Columbia: Water Utility
Softened water still carries minerals
Even after lime softening, Columbia's water tested at 187 mg/L of carbonate hardness in the sample reported in the City's 2025 Water Quality Report. The same sample showed 40.6 mg/L of calcium, 20.7 mg/L of magnesium and a pH of 8.22. Lead at customer taps had a 90th percentile of 2.1 ppb in 2025, with no sites over the action level. Use the 187 mg/L figure when setting up a dishwasher, water heater or softener. Source: City of Columbia: 2025 Water Quality Report
Help the City check your service line
The City of Columbia asks residents to identify their water service line material as part of its Lead Compliance Program under the EPA's revised Lead and Copper Rule. The online survey asks you to locate the line, perform a scratch test with a coin or key and a magnet test, and submit a photo, which takes about 15 minutes. The results help the City verify what material runs on private property. A plumber can help locate the line where it enters the house if you cannot find it. Source: City of Columbia: Water Service Line Material survey
Check the license
Missouri does not license plumbers at the state level. State law requires a plumbing license in cities and towns of 15,000 or more people and in first class counties, and those licenses are issued locally. Source: official licensing page
Frequently asked questions
Is Columbia, Missouri water hard?
The well water is softened with lime, which removes about half of the hardness-causing minerals. The City's 2025 Water Quality Report lists carbonate hardness of 187 mg/L in the reported sample.
Do plumbers need a license in Missouri?
Missouri has no statewide plumbing license. State law requires a locally issued license in cities and towns of 15,000 or more people and in first class counties.
How can I find out if my Columbia service line is lead?
Use the City's Service Line Material Identification survey: locate your line, do a scratch test with a coin or key and a magnet test, and upload a photo. It takes about 15 minutes.
1-800Deals lists companies based on the information they publish; a listing is not an endorsement. Before hiring, check licensing, insurance, reviews and a written estimate.
