How hard is the water in Avondale, AZ?

Tap water hardness
105mg/L
6.1gpg
Moderately hard

Reported by Liberty Water Lpsco · January 2025

AZ typical
180 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

Tap water in Avondale has about 105 mg/L of hardness, which is 6.1 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Liberty Water Lpsco, dated January 2025.

Avondale on the hardness scale, with nearby cities
060120180240300360+AZ typical 180Youngtown: 75 mg/LYoungtown 75Sun City: 75 mg/LSun City 75Goodyear: 154 mg/LGoodyear 154Glendale: 168 mg/LGlendale 168Paradise Valley: 171 mg/LParadise Valley 171Guadalupe: 172 mg/LGuadalupe 172Tempe: 180 mg/LTempe 180El Mirage: 208 mg/LEl Mirage 208Maricopa: 220 mg/LMaricopa 220Phoenix: 237 mg/LPhoenix 237Avondale 105mg/L as calcium carbonate060120180240300360+AZ 180Youngtown: 75 mg/LYoungtown 75Sun City: 75 mg/LSun City 75Goodyear: 154 mg/LGoodyear 154Glendale: 168 mg/LGlendale 168Guadalupe: 172 mg/LGuadalupe 172El Mirage: 208 mg/LEl Mirage 208105 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Avondale sits 75 mg/L below the typical Arizona figure of 180. Of the 10 nearest cities we track, 2 have softer water and 8 have harder. The range nearby runs from 75 mg/L in Youngtown to 237 in Phoenix.

What 105 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 Avondale

3 people × 75 gallons a day × 6.1 gpg = 1,381 grains a day. A 24,000-grain unit regenerates about every 17 days.

Size it for your household

EPA record for Avondale's water system

Avondale City of · PWSID AZ0407088

No health-based violations since 2016

Serves about 96,130 people from surface water.

Health-based
0
Monitoring or reporting
5
Open now
0

EPA lists Avondale City of as the system serving Avondale. The hardness figure above comes from a different system's report, which TapWaterData uses for Avondale.

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 Avondale water hard?

Somewhat. It measures about 105 mg/L (6.1 grains per gallon), which the USGS classes as moderately hard.

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

About 6.1 gpg. One grain per gallon equals 17.1 mg/L, so 105 mg/L divided by 17.1 gives 6.1.

What size water softener do I need in Avondale?

For 3 people using 75 gallons each per day, 6.1 gpg works out to about 1,381 grains a day. A 24,000-grain softener covers that with a regeneration about every 17 days.

Has the Avondale water system had EPA violations?

EPA records show no health-based violations for Avondale City of since 2016. There were also 5 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 42 cities in Arizona

Hardness data: TapWaterData US Water Hardness (utility report, January 27, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.