Hamilton County · OH

Water filtration in Reading

Reading runs 7.4 grains per gallon through City of Reading Water Department, 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 City of Reading Water Department.

Neighborhoods we serve

Downtown Reading
Koenig Park area

Water profile

Reading water is 7.4 grains per gallon.

That is classed as hard water. It comes from City of Reading Water Department, per the GCWW 2025 Water Quality Report.

Hardness: 7.4 grains per gallonHard
Utility: City of Reading Water Department
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: Reading runs its own utility but purchases GCWW water, so the hardness matches Cincinnati's.

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.

Wyoming, in the same county, runs about 1.4x harder at 10.1 grains. Hardness here is set by which utility serves the address, not by the county line.

Common questions

How hard is the water in Reading, OH?

Water in Reading, OH is 7.4 grains per gallon, which is classed as hard water. It is supplied by City of Reading Water Department from ohio River, treated at the Richard Miller plant, per the GCWW 2025 Water Quality Report (2025).

Who supplies the water in Reading, OH?

Reading is served by City of Reading Water Department. 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 Reading, OH?

At 7.4 grains per gallon, Reading 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 Reading do you cover?

All of Reading, including Downtown Reading and Koenig Park area. Flat-rate pricing across the whole service area, with no travel charge between neighborhoods.

How much salt will a softener use in Reading?

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.