How hard is the water in Cibolo, TX?

Tap water hardness
85mg/L
5.0gpg
Moderately hardReports range 57–85

Reported by City of Schertz · July 2024

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

The water in Cibolo carries roughly 85 mg/L of dissolved calcium and magnesium, or 5.0 grains per gallon. That is moderately hard water. The number comes from City of Schertz, dated July 2024. Reports for this system disagree, with values from 57 to 85 mg/L.

Cibolo on the hardness scale, with nearby cities
060120180240300360+TX typical 112Universal City: 121 mg/LUniversal City 121Seguin: 125 mg/LSeguin 125Schertz: 176 mg/LSchertz 176Converse: 179 mg/LConverse 179Selma: 180 mg/LSelma 180Live Oak: 180 mg/LLive Oak 180Windcrest: 180 mg/LWindcrest 180Kirby: 180 mg/LKirby 180Terrell Hills: 180 mg/LTerrell Hills 180New Braunfels: 202 mg/LNew Braunfels 202Cibolo 85mg/L as calcium carbonate060120180240300360+TX 112Universal City: 121 mg/LUniversal. 121Schertz: 176 mg/LSchertz 176Converse: 179 mg/LConverse 179Selma: 180 mg/LSelma 180Live Oak: 180 mg/LLive Oak 180Windcrest: 180 mg/LWindcrest 18085 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 85 mg/L, Cibolo is 27 mg/L below the typical Texas figure of 112. None of the 10 nearest cities we track has softer water. The range nearby runs from 121 mg/L in Universal City to 202 in New Braunfels.

What 85 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 Cibolo

3 people × 75 gallons a day × 5.0 gpg = 1,116 grains a day. A 24,000-grain unit regenerates about every 21 days.

Size it for your household

EPA record for Cibolo's water system

City of Cibolo · PWSID TX0940018

No health-based violations since 2016

Serves about 20,331 people from surface water.

Health-based
0
Monitoring or reporting
5
Open now
0

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

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 Cibolo water hard?

Somewhat. It measures about 85 mg/L (5.0 grains per gallon), which the USGS classes as moderately hard.

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

About 5.0 gpg. One grain per gallon equals 17.1 mg/L, so 85 mg/L divided by 17.1 gives 5.0.

What size water softener do I need in Cibolo?

For 3 people using 75 gallons each per day, 5.0 gpg works out to about 1,116 grains a day. A 24,000-grain softener covers that with a regeneration about every 21 days.

Has the Cibolo water system had EPA violations?

EPA records show no health-based violations for City of Cibolo since 2016. There were also 5 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, July 24, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.