Hard water in Bulverde, TX

Tap water hardness
157mg/L
9.2gpg
HardReports range 157–185

Reported by Clwsc Canyon Lake Shores · October 2025

TX typical
112 mg/L
EPA health violations since 2016
6
Softener for 3 people
24k grain
Data
Utility report

Bulverde water measures 157 mg/L (9.2 gpg) of hardness, hard by USGS standards. The number comes from Clwsc Canyon Lake Shores, dated October 2025. Reports for this system disagree, with values from 157 to 185 mg/L.

Bulverde on the hardness scale, with nearby cities
060120180240300360+TX typical 112Cibolo: 85 mg/LCibolo 85Universal City: 121 mg/LUniversal City 121Schertz: 176 mg/LSchertz 176Converse: 179 mg/LConverse 179Timberwood Park: 180 mg/LTimberwood Park 180Fair Oaks Ranch: 180 mg/LFair Oaks Ranch 180Scenic Oaks: 180 mg/LScenic Oaks 180Selma: 180 mg/LSelma 180Live Oak: 180 mg/LLive Oak 180Windcrest: 180 mg/LWindcrest 180Bulverde 157mg/L as calcium carbonate060120180240300360+TX 112Universal City: 121 mg/LUniversal. 121Timberwood Park: 180 mg/LTimberwood. 180Fair Oaks Ranch: 180 mg/LFair Oaks. 180Scenic Oaks: 180 mg/LScenic Oaks 180Selma: 180 mg/LSelma 180Live Oak: 180 mg/LLive Oak 180157 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 157 mg/L, Bulverde is 45 mg/L above the typical Texas figure of 112. Of the 10 nearest cities we track, 2 have softer water and 8 have harder. The range nearby runs from 85 mg/L in Cibolo to 180 in Timberwood Park.

What 157 mg/L means at home

Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.

Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.

Soap and detergent need a little more to lather, and soap scum shows up in the tub.

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

At 157 mg/L most of the trouble is scale, and only a few things deal with it.

Ion-exchange water softener

The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.

Salt-free conditioner

No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.

Reverse osmosis or carbon filter

Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.

Softener size for Bulverde

3 people × 75 gallons a day × 9.2 gpg = 2,066 grains a day. A 24,000-grain unit regenerates about every 11 days.

Size it for your household

EPA record for Bulverde's water system

Clwsc Canyon Lake Shores · PWSID TX0460019

6 health-based violations since 2016

Serves about 44,196 people from surface water.

Health-based
6
Monitoring or reporting
12
Open now
0

TapWaterData ties Bulverde to this system. EPA's service-area records do not name Bulverde, so check the utility printed on your water bill.

20162017201820192020202120222023202420252026Total trihalomethanes (TTHM)Surface Water Treatment Rule'16'18'20'22'24'26Total trihalomethanes (TTHM)Surface Water Treatment Rule
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Total trihalomethanes (TTHM)a disinfection byproduct42025–2026Resolved
Surface Water Treatment Rulefiltration and disinfection22025Resolved

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 Bulverde water hard?

Yes. It measures about 157 mg/L (9.2 grains per gallon), which the USGS classes as hard.

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

About 9.2 gpg. One grain per gallon equals 17.1 mg/L, so 157 mg/L divided by 17.1 gives 9.2.

What size water softener do I need in Bulverde?

For 3 people using 75 gallons each per day, 9.2 gpg works out to about 2,066 grains a day. A 24,000-grain softener covers that with a regeneration about every 11 days.

Has the Bulverde water system had EPA violations?

EPA records show 6 health-based violations for Clwsc Canyon Lake Shores since 2016, involving Total trihalomethanes (TTHM), Surface Water Treatment Rule. There were also 12 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, October 3, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.