Water in Worthington
The 2020 census counted 14,786 people in Worthington, in Franklin County. It is about 9.5 miles from downtown Columbus.
Worthington 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 Worthington 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 Worthington are 43085.
Reverse osmosis installation here
Reverse osmosis in Worthington belongs at the kitchen sink, for cooking and drinking. It is not a whole-house softener. A unit should be certified for the reductions you actually want. On Columbus water, the 2025 report shows higher sodium and sulfate at the Parsons Avenue plant and higher nitrate at Dublin Road, before the city's nitrate removal process. Those are drinking-water details, and the city does not pin them to one Worthington street.
Nearby cities
Westerville is 5.5 miles from Worthington, in Franklin County. Water there is City of Westerville Water Division (own 7.5 MGD plant); Columbus serves 'various parts' of Westerville per Columbus contract list. Published hardness: ~7 gpg (~125 mg/L).
Upper Arlington is 5.9 miles from Worthington, 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 6.0 miles from Worthington, 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.
Dublin is 6.5 miles from Worthington, 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 Worthington
Nearby
Questions people ask
Who supplies drinking water in Worthington?
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 Worthington 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 Worthington different from Westerville?
Westerville is 5.5 miles from Worthington, in Franklin County. Water there is City of Westerville Water Division (own 7.5 MGD plant); Columbus serves 'various parts' of Westerville per Columbus contract list. Published hardness: ~7 gpg (~125 mg/L).
Which ZIP codes does the Worthington page cover?
43085. Those come from a named place source, not a guessed centroid. Houses just outside the city limits may be on a different supplier.