Plumbing companies in Cincinnati, OH
Quick answer
2 plumbing companies have a local office in Cincinnati, OH on 1-800Deals: Benjamin Franklin Plumbing of Cincinnati and Roto-Rooter Cincinnati, OH. Greater Cincinnati Water Works (GCWW) treats Ohio River water at its Richard Miller Plant and groundwater from the Great Miami aquifer at its Charles M. GCWW notes that Cincinnati began requiring copper service pipes in 1928, so lead lines are found at older homes.
Last updated September 28, 2026. Sources are linked below.
Plumbing companies serving Cincinnati and nearby Hamilton County communities, with the services and service areas each one lists. We list 2 companies with a local office here:
- Benjamin Franklin Plumbing of Cincinnati, 756 Old State Route 74, Cincinnati. Services include sinks, sink installation, sink repair, toilets, toilet installation, toilet repair; serves Addyston, Alexandria, Amelia, Aurora, Batavia, Batesville, Bellevue, Bethel, Blanchester, Blue Ash and more.
- Roto-Rooter Cincinnati, OH, 2125 Montana Ave, Cincinnati. Services include drain cleaning, emergency plumber, water heater repair, water damage, commercial plumbing, excavation; serves Montgomery, Loveland, Blue Ash, Sharonville, Bridgetown, Newport, Burlington, Ft Thomas, Erlanger, Springboro and more.
What to know about plumbing in Cincinnati
Moderately hard water from two plants
Greater Cincinnati Water Works (GCWW) treats Ohio River water at its Richard Miller Plant and groundwater from the Great Miami aquifer at its Charles M. Bolton Plant. GCWW puts average hardness at about 8 grains per gallon for Miller Plant water and about 9 grains per gallon for Bolton Plant water. That is enough mineral content to leave scale in water heaters and on fixtures over time. Source: Greater Cincinnati Water Works: Frequently Asked Questions
Free lead service line replacement
GCWW notes that Cincinnati began requiring copper service pipes in 1928, so lead lines are found at older homes. Its online lead map lets you look up your property, and the utility covers 100% of replacement costs, including the private-side line and property restoration, for homeowners who join the program. Check the map before paying a plumber to replace an old water line yourself. Source: Greater Cincinnati Water Works: Lead Service Lines
Report sewer backups to MSD within 48 hours
The Metropolitan Sewer District of Greater Cincinnati runs a Sewer Backup Program that may provide cleaning and reimbursement when wastewater backs up into a building because of problems in the public sewer. You must report the backup to MSD within 48 hours of discovering it to be considered, and overland flooding is not eligible. Property owners remain responsible for clearing clogs in, and repairing, the private building sewer on their property. Source: MSD of Greater Cincinnati: About the Sewer Backup Program
Check the license
Hamilton County Public Health requires every contractor pulling a residential or commercial plumbing permit to show an Ohio plumbing contractor license from the Ohio Construction Industry Licensing Board, while individual journeyman and master plumber licenses are issued by cities such as Cincinnati. Ask to see both and confirm them before work starts. Source: official licensing page
Frequently asked questions
Is Cincinnati water hard?
Moderately. Greater Cincinnati Water Works lists average hardness of about 8 grains per gallon for its Miller Plant water and about 9 grains per gallon for its Bolton Plant water.
Does GCWW pay to replace a lead water line on my property?
Yes. Greater Cincinnati Water Works covers 100% of replacement costs for participating homeowners, including restoration, and its online lead map shows whether your property is on the list.
What should I do if sewage backs up into my basement in Cincinnati?
Report it to the Metropolitan Sewer District within 48 hours, since backups caused by the public sewer may qualify for cleaning and reimbursement. If the clog is in your own building sewer, a plumber on this page can clear or repair it.
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.
