How hard is the water in Bella Vista, AR?

Tap water hardness
107mg/L
6.3gpg
Moderately hardCounty estimate

County estimate from 2,420 water samples in Benton County · July 2026

AR typical
39 mg/L
Softener for 3 people
24k grain
Data
County estimate

Water samples from around Bella Vista put hardness at about 107 mg/L (6.3 gpg), which would be moderately hard on the USGS scale. Treat this as a rough guide: it is the median of 2,420 samples taken across Benton County, mostly wells and streams, not a test of Bella Vista's treated tap water.

Bella Vista on the hardness scale, with nearby cities
060120180240300360+AR typical 39Centerton: 55 mg/LCenterton 55Bentonville: 55 mg/LBentonville 55Cave Springs: 62 mg/LCave Springs 62Lowell: 62 mg/LLowell 62Rogers: 67 mg/LRogers 67Prairie Grove: 68 mg/LPrairie Grove 68Springdale: 77 mg/LSpringdale 77Fayetteville: 77 mg/LFayetteville 77Farmington: 77 mg/LFarmington 77Siloam Springs: 113 mg/LSiloam Springs 113Bella Vista 107mg/L as calcium carbonate060120180240300360+AR 39Centerton: 55 mg/LCenterton 55Bentonville: 55 mg/LBentonville 55Cave Springs: 62 mg/LCave Sprin. 62Lowell: 62 mg/LLowell 62Rogers: 67 mg/LRogers 67Springdale: 77 mg/LSpringdale 77107 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Bella Vista sits 68 mg/L above the typical Arkansas figure of 39. Of the 10 nearest cities we track, 9 have softer water and 1 has harder. The range nearby runs from 55 mg/L in Centerton to 113 in Siloam Springs.

What 107 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 Bella Vista

3 people × 75 gallons a day × 6.3 gpg = 1,408 grains a day. A 24,000-grain unit regenerates about every 17 days.

Size it for your household

EPA record for Bella Vista's water system

We could not match Bella Vista to a community water system in EPA's records. Your water bill or the yearly Consumer Confidence Report names the system and its ID.

Questions

Is Bella Vista water hard?

Somewhat. It measures about 107 mg/L (6.3 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Bella Vista in grains per gallon?

About 6.3 gpg. One grain per gallon equals 17.1 mg/L, so 107 mg/L divided by 17.1 gives 6.3.

What size water softener do I need in Bella Vista?

For 3 people using 75 gallons each per day, 6.3 gpg works out to about 1,408 grains a day. A 24,000-grain softener covers that with a regeneration about every 17 days.

Nearby cities

All 46 cities in Arkansas

Hardness data: TapWaterData US Water Hardness (county estimate, July 4, 2026), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.