How hard is the water in Granbury, TX?

Tap water hardness
61mg/L
3.5gpg
Moderately hardReports range 27–74

Reported by City of Granbury · March 2025

TX typical
112 mg/L
EPA health violations since 2016
1
Softener for 3 people
24k grain
Data
Utility report

Tap water in Granbury has about 61 mg/L of hardness, which is 3.5 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from City of Granbury, dated March 2025. Reports for this system disagree, with values from 27 to 74 mg/L.

Granbury on the hardness scale, with nearby cities
060120180240300360+TX typical 112Pecan Plantation: 26 mg/LPecan Plantation 26Burleson: 32 mg/LBurleson 32Keene: 37 mg/LKeene 37Godley: 38 mg/LGodley 38Joshua: 38 mg/LJoshua 38Alvarado: 38 mg/LAlvarado 38Cleburne: 41 mg/LCleburne 41Weatherford: 88 mg/LWeatherford 88Mineral Wells: 91 mg/LMineral Wells 91Willow Park: 115 mg/LWillow Park 115Granbury 61mg/L as calcium carbonate060120180240300360+TX 112Pecan Plantation: 26 mg/LPecan Plan. 26Godley: 38 mg/LGodley 38Joshua: 38 mg/LJoshua 38Cleburne: 41 mg/LCleburne 41Weatherford: 88 mg/LWeatherford 88Willow Park: 115 mg/LWillow Park 11561 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 61 mg/L, Granbury is 51 mg/L below the typical Texas figure of 112. Of the 10 nearest cities we track, 7 have softer water and 3 have harder. The range nearby runs from 26 mg/L in Pecan Plantation to 115 in Willow Park.

What 61 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Granbury

3 people × 75 gallons a day × 3.5 gpg = 799 grains a day. A 24,000-grain unit regenerates about every 30 days.

Size it for your household

EPA record for Granbury's water system

City of Granbury · PWSID TX1110001

1 health-based violation since 2016

Serves about 11,468 people from surface water.

Health-based
1
Monitoring or reporting
62
Open now
0
20162017201820192020202120222023202420252026Chlorite'16'18'20'22'24'26Chlorite
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Chlorite12023Resolved

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Granbury water hard?

Somewhat. It measures about 61 mg/L (3.5 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Granbury in grains per gallon?

About 3.5 gpg. One grain per gallon equals 17.1 mg/L, so 61 mg/L divided by 17.1 gives 3.5.

What size water softener do I need in Granbury?

For 3 people using 75 gallons each per day, 3.5 gpg works out to about 799 grains a day. A 24,000-grain softener covers that with a regeneration about every 30 days.

Has the Granbury water system had EPA violations?

EPA records show 1 health-based violation for City of Granbury since 2016, involving Chlorite. There were also 62 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 342 cities in Texas

Hardness data: TapWaterData US Water Hardness (utility report, March 30, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.