How hard is the water in Murphy, TX?

Tap water hardness
108mg/L
6.3gpg
Moderately hard

Reported by City of Murphy · May 2023

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

Murphy water measures 108 mg/L (6.3 gpg) of hardness, moderately hard by USGS standards. The number comes from City of Murphy, dated May 2023.

Murphy on the hardness scale, with nearby cities
060120180240300360+TX typical 112Fairview: 90 mg/LFairview 90Allen: 109 mg/LAllen 109Lucas: 110 mg/LLucas 110Wylie: 126 mg/LWylie 126Lavon: 126 mg/LLavon 126Garland: 146 mg/LGarland 146Richardson: 150 mg/LRichardson 150Plano: 150 mg/LPlano 150Rowlett: 161 mg/LRowlett 161Sachse: 164 mg/LSachse 164Murphy 108mg/L as calcium carbonate060120180240300360+TX 112Allen: 109 mg/LAllen 109Lucas: 110 mg/LLucas 110Wylie: 126 mg/LWylie 126Garland: 146 mg/LGarland 146Richardson: 150 mg/LRichardson 150Sachse: 164 mg/LSachse 164108 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Murphy sits close to the typical Texas figure of 112 mg/L. Of the 10 nearest cities we track, 1 has softer water and 9 have harder. The range nearby runs from 90 mg/L in Fairview to 164 in Sachse.

What 108 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 Murphy

3 people × 75 gallons a day × 6.3 gpg = 1,422 grains a day. A 24,000-grain unit regenerates about every 16 days.

Size it for your household

EPA record for Murphy's water system

City of Murphy · PWSID TX0430042

No health-based violations since 2016

Serves about 21,082 people from surface water.

Health-based
0
Monitoring or reporting
2
Open now
0

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 Murphy water hard?

Somewhat. It measures about 108 mg/L (6.3 grains per gallon), which the USGS classes as moderately hard.

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

About 6.3 gpg. One grain per gallon equals 17.1 mg/L, so 108 mg/L divided by 17.1 gives 6.3.

What size water softener do I need in Murphy?

For 3 people using 75 gallons each per day, 6.3 gpg works out to about 1,422 grains a day. A 24,000-grain softener covers that with a regeneration about every 16 days.

Has the Murphy water system had EPA violations?

EPA records show no health-based violations for City of Murphy since 2016. There were also 2 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, May 13, 2023), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.