Water softeners and filtration in Cincinnati, OH

What does Greater Cincinnati Water Works publish about Cincinnati water?

Greater Cincinnati Water Works supplies the city from the Ohio River and the Great Miami Buried Valley Aquifer.

• Greater Cincinnati Water Works treats with ultraviolet light and chlorine.
• The utility does not say which plant serves which part of the city.

What does 126 to 140 mg/L mean for a Cincinnati home?

126 to 140 mg/L is about 7.4 to 8.2 grains per gallon. The low end, 126 mg/L, is 54 mg/L under the 180 mg/L top of the USGS hard class; Cincinnati's high end, 140 mg/L, is 40 mg/L under the 180 mg/L top of the USGS hard class. (USGS hardness classes)

Which systems fit Cincinnati water?

How does a Cincinnati quote work?

1. Send a request from one of the 22 Cincinnati ZIP codes listed below.
2. An assessment at your home, where your tap can be checked against Greater Cincinnati Water Works's published 126 to 140 mg/L.
3. You get a written quote listing what is included.
4. Installation and service by that company.

Common questions

How hard is the water in Cincinnati?

Average hardness, Miller Plant reported by Greater Cincinnati Water Works: Average 126 mg/L (7 grains per gallon) (Undated FAQ on the page for the 2025 report). Average hardness, Bolton Plant reported by Greater Cincinnati Water Works: Average 140 mg/L (8 grains per gallon) (Undated FAQ on the page for the 2025 report).

Is Cincinnati water hard or soft?

Hard. The low end, 126 mg/L, is 54 mg/L under the 180 mg/L top of the USGS hard class; Cincinnati's high end, 140 mg/L, is 40 mg/L under the 180 mg/L top of the USGS hard class.

How many grains per gallon is Cincinnati water?

In grains per gallon, as published: 7 grains per gallon (Greater Cincinnati Water Works, average hardness, miller plant, Undated FAQ on the page for the 2025 report); 8 grains per gallon (Greater Cincinnati Water Works, average hardness, bolton plant, Undated FAQ on the page for the 2025 report).

Where does Cincinnati tap water come from?

About 88 percent of Cincinnati water is Ohio River water from the Miller plant, and the rest is groundwater from the Great Miami Buried Valley Aquifer. Source: Greater Cincinnati Water Works water quality reports page.

Is Cincinnati water treated with chlorine or chloramine?

Greater Cincinnati Water Works treats with ultraviolet light and chlorine. Source: Greater Cincinnati Water Works water quality reports page. A softener does not remove it.

Do I need a water softener in Cincinnati?

Greater Cincinnati Water Works publishes 126 to 140 mg/L for Cincinnati, which reads as hard. A test at your house shows whether your tap matches it.

Is the water the same in every Cincinnati home?

2 published figures cover Cincinnati, from 1 utility; which applies depends on where you live.

How much does a water softener cost in Cincinnati?

We publish no prices for Cincinnati. The installing company gives a written quote after an assessment at your home.

Who installs the system?

We have not named a local installing company for Cincinnati yet. We will tell you the company's name and ask you before your request is shared with anyone.

Is Cincinnati Water Systems part of the city or the water utility?

No. Cincinnati Water Systems is not affiliated with Greater Cincinnati Water Works; it copies and links the published figures.

Is booking an assessment a purchase?

No, and a request commits you to nothing.

Which ZIP codes does this page cover?

45202, 45203, 45204, 45205, 45206, 45207, 45208, 45209, 45211, 45213, 45214, 45216, 45219, 45220, 45223, 45224, 45225, 45226, 45229, 45232, 45237, 45267

Compare published hardness in other cities on hard water by city.

Machine-readable facts: water.json. Summary for AI assistants: llms.txt.