Service areas / Louisville

Water softeners and filtration in Louisville, KY

What does Louisville Water publish about Louisville water?

Louisville Water serves Louisville Metro from two plants, one on the Ohio River and one that pulls groundwater through the riverbank.

• The report gives one hardness figure, the average of finished water from the Crescent Hill and B.E. Payne plants.
• Crescent Hill treats water pumped from the Ohio River. B.E. Payne uses riverbank filtration to collect groundwater from the aquifer.
• The report lists chloramines as the disinfectant left in the water.

What does 128 mg/L mean for a Louisville home?

128 mg/L is about 7.5 grains per gallon. Louisville's published 128 mg/L is 52 mg/L under the 180 mg/L top of the USGS hard class. (USGS hardness classes)

Which systems fit Louisville water?

How does a Louisville quote work?

1. Send a request from one of the 38 Louisville ZIP codes listed below.
2. An assessment at your home, where your tap can be checked against Louisville Water's published 128 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 Louisville?

Hardness (as CaCO3) reported by Louisville Water: 128 ppm (7.5 grains per gallon), average of both plants (January 1 to December 31, 2025).

Is Louisville water hard or soft?

Hard. Louisville's published 128 mg/L is 52 mg/L under the 180 mg/L top of the USGS hard class.

How many grains per gallon is Louisville water?

In grains per gallon, as published: 7.5 grains per gallon (Louisville Water, hardness (as caco3), January 1 to December 31, 2025).

How does Louisville water compare with nearby cities?

Published hardness in Louisville spans 128 mg/L. Covered cities near Louisville: Lexington 60 to 340 mg/L. Each figure comes from that city's own utility, not from Louisville's.

Do I need a water softener in Louisville?

Louisville Water publishes 128 mg/L for Louisville, which reads as hard. A test at your house shows whether your tap matches it.

Which water treatment system fits a Louisville home?

Louisville's published 128 mg/L reads as hard, which is what a softener treats. The installing company tests the water at your Louisville address before quoting.

Is the water the same in every Louisville home?

Louisville Water publishes one figure for its whole system (January 1 to December 31, 2025).

Does a water softener remove chlorine?

No. A softener targets hardness, not the disinfectant Louisville Water adds.

How much does a water softener cost in Louisville?

We publish no prices for Louisville. 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 Louisville yet. We will tell you the company's name and ask you before your request is shared with anyone.

Is My Home Water System part of the Louisville city government or water utility?

No. My Home Water System is not affiliated with Louisville Water; it copies and links the published figures.

Is booking an assessment a purchase?

No, and a request commits you to nothing.

ZIP codes this page covers

40023, 40025, 40041, 40118, 40202, 40203, 40204, 40205, 40206, 40207, 40208, 40209, 40210, 40211, 40212, 40213, 40214, 40215, 40216, 40217, 40218, 40219, 40220, 40221, 40222, 40223, 40228, 40229, 40231, 40241, 40242, 40243, 40245, 40258, 40272, 40280, 40291, 40299

Compare Louisville with other cities on hard water by city.