Water softeners and filtration in Nashville, TN

What does Metro Water Services publish about Nashville water?

Metro Water Services draws water from the Cumberland River and treats it at two plants.

• Metro Water Services calls Nashville's water moderately hard. Calcium hardness is only part of total hardness.

What does 88.5 to 128.4 mg/L mean for a Nashville home?

88.5 to 128.4 mg/L is about 5.2 to 7.5 grains per gallon. The low end, 88.5 mg/L, is 32 mg/L under the 120 mg/L top of the USGS moderately hard class; Nashville's high end, 128.4 mg/L, is 52 mg/L under the 180 mg/L top of the USGS hard class. (USGS hardness classes)

Which systems fit Nashville water?

How does a Nashville quote work?

1. Send a request from one of the 27 Nashville ZIP codes listed below.
2. An assessment at your home, where your tap can be checked against Metro Water Services's published 88.5 to 128.4 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 Nashville?

Total hardness reported by Metro Water Services: 100.5 mg/L, range 88.5-128.4 mg/L (2023 data, in the 2025 report). Calcium hardness reported by Metro Water Services: 75.3 mg/L, range 63.9-92.6 mg/L (Undated row, 2025 water quality report).

Is Nashville water hard or soft?

Moderately hard to hard. The low end, 88.5 mg/L, is 32 mg/L under the 120 mg/L top of the USGS moderately hard class; Nashville's high end, 128.4 mg/L, is 52 mg/L under the 180 mg/L top of the USGS hard class.

How many grains per gallon is Nashville water?

The utility publishes hardness in mg/L, not grains. The published 88.5 to 128.4 mg/L is about 5.2 to 7.5 grains per gallon, converted by us at 17.1 mg/L per grain.

Which utility supplies water in Nashville?

Metro Water serves most of Davidson County, but several separate utility districts, such as Harpeth Valley Utility District, also operate inside the county, so check your bill. Source: Metro Water and Sewerage Services Annual Disclosure FY2025.

Where does Nashville tap water come from?

Metro Water draws from the Cumberland River and treats it at the K.R. Harrington and Omohundro plants. Source: Metro Water and Sewerage Services Annual Disclosure FY2025.

Is Nashville water treated with chlorine or chloramine?

Metro Water Services disinfects with a small amount of bleach, a form of chlorine, averaging 1.60 ppm in its 2025 report. Source: Metro Water Services 2025 Consumer Confidence Report. A softener does not remove it.

Do I need a water softener in Nashville?

Metro Water Services publishes 88.5 to 128.4 mg/L for Nashville, which reads as moderately hard to hard. A test at your house shows whether your tap matches it.

Is the water the same in every Nashville home?

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

How much does a water softener cost in Nashville?

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

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

No. Nashville Water Systems is not affiliated with Metro Water Services; 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?

37013, 37076, 37080, 37115, 37138, 37189, 37201, 37203, 37204, 37205, 37206, 37207, 37208, 37209, 37210, 37211, 37212, 37213, 37214, 37216, 37217, 37218, 37219, 37221, 37228, 37232, 37238

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

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