How hard is the water in Sherman, TX?

Tap water hardness
68mg/L
4.0gpg
Moderately hardReports range 68–94

Reported by Tanglewood on Texoma · June 2022

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

The water in Sherman carries roughly 68 mg/L of dissolved calcium and magnesium, or 4.0 grains per gallon. That is moderately hard water. The number comes from Tanglewood on Texoma, dated June 2022. Reports for this system disagree, with values from 68 to 94 mg/L.

Sherman on the hardness scale, with nearby cities
060120180240300360+TX typical 112Bonham: 3 mg/LBonham 3Van Alstyne: 18 mg/LVan Alstyne 18Gainesville: 21 mg/LGainesville 21Aubrey: 28 mg/LAubrey 28Pilot Point: 30 mg/LPilot Point 30Celina: 40 mg/LCelina 40Anna: 62 mg/LAnna 62Melissa: 111 mg/LMelissa 111Princeton: 116 mg/LPrinceton 116McKinney: 132 mg/LMcKinney 132Sherman 68mg/L as calcium carbonate060120180240300360+TX 112Bonham: 3 mg/LBonham 3Van Alstyne: 18 mg/LVan Alstyne 18Pilot Point: 30 mg/LPilot Point 30Celina: 40 mg/LCelina 40Anna: 62 mg/LAnna 62Melissa: 111 mg/LMelissa 11168 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Sherman sits 44 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 3 mg/L in Bonham to 132 in McKinney.

What 68 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 Sherman

3 people × 75 gallons a day × 4.0 gpg = 900 grains a day. A 24,000-grain unit regenerates about every 26 days.

Size it for your household

EPA record for Sherman's water system

City of Sherman · PWSID TX0910006

No health-based violations since 2016

Serves about 43,645 people from surface water.

Health-based
0
Monitoring or reporting
21
Open now
0

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

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 Sherman water hard?

Somewhat. It measures about 68 mg/L (4.0 grains per gallon), which the USGS classes as moderately hard.

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

About 4.0 gpg. One grain per gallon equals 17.1 mg/L, so 68 mg/L divided by 17.1 gives 4.0.

What size water softener do I need in Sherman?

For 3 people using 75 gallons each per day, 4.0 gpg works out to about 900 grains a day. A 24,000-grain softener covers that with a regeneration about every 26 days.

Has the Sherman water system had EPA violations?

EPA records show no health-based violations for City of Sherman since 2016. There were also 21 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, June 7, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.