Boone County · KY

Union, KY

Union runs 7.4 grains per gallon through Boone County Water District, which puts it in the hard band. Hard, but not extreme. It is enough to leave scale in a water heater over time, which is what shortens its life. Granular activated carbon and UV. No softening, the hardness you get is what the river carries.

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Local water profile

7.4 grains per gallon, hard water, supplied by Boone County Water District.

Union neighborhoods we serve

Triple Crown
Union Town Center area

Water profile

Union water is 7.4 grains per gallon.

That is classed as hard water. It comes from Boone County Water District, per the GCWW 2025 Water Quality Report.

Hardness: 7.4 grains per gallonHard
Utility: Boone County Water District
Source: Ohio River, treated at the Richard Miller plant
Treatment: Granular activated carbon and UV. No softening, the hardness you get is what the river carries.
Worth knowing: Boone County buys from Greater Cincinnati Water Works through the Boone-Florence Water Commission.

Source: GCWW 2025 Water Quality Report, 2025 reporting year. Hardness bands follow the Water Quality Association scale: soft under 3.5 grains, moderate 3.5 to 7, hard 7 to 10.5, very hard above 10.5.

What that means here

This is hard water. It will not ruin anything overnight, but scale accumulates inside the water heater over years, which is what shortens its life.

bags of salt a year

At 7.4 grains, for a four-person household using about 300 gallons a day. Fewer people or a more efficient softener uses less.

7.4

grains per gallon

Hard on the Water Quality Association scale. Soft is under 3.5, hard starts at 7, very hard above 10.5.

Common questions

How hard is the water in Union, KY?

Water in Union, KY is 7.4 grains per gallon, which is classed as hard water. It is supplied by Boone County Water District from ohio River, treated at the Richard Miller plant, per the GCWW 2025 Water Quality Report (2025).

Who supplies the water in Union, KY?

Union is served by Boone County Water District. The water comes from ohio River, treated at the Richard Miller plant. Granular activated carbon and UV. No softening, the hardness you get is what the river carries.

Do I need a water softener in Union, KY?

At 7.4 grains per gallon, Union water is hard. Water above 7 grains per gallon causes scale in water heaters and fixtures and reduces soap lather, which is the point at which most homes benefit from a softener.

What parts of Union do you cover?

All of Union, including Triple Crown and Union Town Center area. Flat-rate pricing across the whole service area, with no travel charge between neighborhoods.

How much salt will a softener use in Union?

At 7.4 grains per gallon, a four-person household using roughly 300 gallons a day goes through about 6 forty-pound bags of softener salt a year. Smaller households and higher-efficiency softeners use less.

Is anything unusual about Union water?

Boone County buys from Greater Cincinnati Water Works through the Boone-Florence Water Commission.

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Union, KY: ZIP Codes We Serve

We install and service water treatment systems across 41091.

Union, KY: Local Landmarks

Homes near Harmony Park, Union Park, Hempsteade HOA Park (Private), Scheben Branch Boone County Library, Union City Building and Ryle High School;Gray Middle School;Mann Elementary School all draw the same municipal supply.

Union, KY: Nearby Streets

Our crews work Frogtown Road, Gunpowder Road, Mount Zion Road and Hathaway Road regularly.

Union, KY in Northern Kentucky

Union sits in Boone County, part of Northern Kentucky. Water here is supplied and treated at the county and municipal level, so hardness and treatment vary street to street across the region rather than following one regional average. That is why we test at the property before recommending a system. See every community we serve in Boone County.

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