Water in Dublin
The 2020 census counted 49,328 people in Dublin, in Franklin County and Delaware County and Union County and Madison County. It is about 13 miles from downtown Columbus.
Dublin is supplied by Columbus Water & Power as a contract community. Columbus treats Scioto River and Big Walnut Creek surface water, and Scioto Valley groundwater at the Parsons Avenue plant. The 2025 report lists finished-water hardness of 5.7–7.3 grains per gallon by plant (98–125 mg/L) and a system summary of 115 mg/L. The city does not publish which plant feeds a single Dublin address, so that range is the number we use, and we still test at the house. Columbus Water & Power says a home filter is not required to make the water safe to drink. On this supply, a softener or filter is a choice about taste, odor, scale, and how appliances wear, not a safety fix.
City of Columbus water (Columbus Water & Power) - listed contract community publishes a hardness figure for this supply: 5.7-7.3 gpg (98-125 mg/L) 2025 annual avg by plant; system avg 115 mg/L.
ZIP codes on file for Dublin are 43016, 43017.
Water softener installation here
A softener in Dublin is justified by the published hardness above, not by a statewide map. It reduces scale and spotting. It does not take out chlorine, PFAS, or nitrate. Repair calls usually follow salt bridges, resin that is exhausted, or a unit sized for a different hardness than Dublin actually has.
Nearby cities
Hilliard is 5.0 miles from Dublin, in Franklin County. Water there is City of Columbus water (Columbus Water & Power) - listed contract community. Published hardness: 5.7-7.3 gpg (98-125 mg/L) 2025 annual avg by plant; system avg 115 mg/L.
Powell is 5.1 miles from Dublin, in Delaware County. Water there is Del-Co Water Company, Inc. (per City of Powell utilities page). Published hardness: 7-8 gpg (120-140 mg/L) per Del-Co.
Worthington is 6.5 miles from Dublin, in Franklin County. Water there is City of Columbus water (Columbus Water & Power) - listed contract community. Published hardness: 5.7-7.3 gpg (98-125 mg/L) 2025 annual avg by plant; system avg 115 mg/L.
Upper Arlington is 7.3 miles from Dublin, in Franklin County. Water there is City of Columbus water (Columbus Water & Power) - listed contract community. Published hardness: 5.7-7.3 gpg (98-125 mg/L) 2025 annual avg by plant; system avg 115 mg/L.
More in Dublin
Nearby
Questions people ask
Who supplies drinking water in Dublin?
City of Columbus water (Columbus Water & Power) - listed contract community. City of Columbus water (Columbus Water & Power) - listed contract community publishes a hardness figure for this supply: 5.7-7.3 gpg (98-125 mg/L) 2025 annual avg by plant; system avg 115 mg/L.
Is the water in Dublin hard?
5.7-7.3 gpg (98-125 mg/L) 2025 annual avg by plant; system avg 115 mg/L. That is the published figure, in the units the utility used. Spots on glass and scale in a water heater are the household signs. The test confirms the number at the address.
How is Dublin different from Hilliard?
Hilliard is 5.0 miles from Dublin, in Franklin County. Water there is City of Columbus water (Columbus Water & Power) - listed contract community. Published hardness: 5.7-7.3 gpg (98-125 mg/L) 2025 annual avg by plant; system avg 115 mg/L.
Do I need a water softener in Dublin?
Only if the hardness at the house matches the problem you see. The published figure for this supply is 5.7-7.3 gpg (98-125 mg/L) 2025 annual avg by plant; system avg 115 mg/L. A softener addresses that mineral hardness. It will not fix chlorine taste or a well-water sulfur smell.