How hard is the water in Lakeway, TX?

Tap water hardness
106mg/L
6.2gpg
Moderately hardReports range 90–106

Reported by Travis County Wcid 17 · October 2025

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

Tap water in Lakeway has about 106 mg/L of hardness, which is 6.2 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Travis County Wcid 17, dated October 2025. Reports for this system disagree, with values from 90 to 106 mg/L.

Lakeway on the hardness scale, with nearby cities
060120180240300360+TX typical 112Shady Hollow: 63 mg/LShady Hollow 63Wells Branch: 63 mg/LWells Branch 63Austin: 68 mg/LAustin 68Brushy Creek: 74 mg/LBrushy Creek 74Steiner Ranch: 94 mg/LSteiner Ranch 94Bee Cave: 110 mg/LBee Cave 110Belterra: 143 mg/LBelterra 143Dripping Springs: 148 mg/LDripping Springs 148Cedar Park: 157 mg/LCedar Park 157Leander: 162 mg/LLeander 162Lakeway 106mg/L as calcium carbonate060120180240300360+TX 112Austin: 68 mg/LAustin 68Steiner Ranch: 94 mg/LSteiner Ra. 94Bee Cave: 110 mg/LBee Cave 110Belterra: 143 mg/LBelterra 143Dripping Springs: 148 mg/LDripping S. 148Cedar Park: 157 mg/LCedar Park 157106 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 106 mg/L, Lakeway is close to the typical Texas figure of 112 mg/L. Of the 10 nearest cities we track, 5 have softer water and 5 have harder. The range nearby runs from 63 mg/L in Shady Hollow to 162 in Leander.

What 106 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 Lakeway

3 people × 75 gallons a day × 6.2 gpg = 1,402 grains a day. A 24,000-grain unit regenerates about every 17 days.

Size it for your household

EPA record for Lakeway's water system

Lakeway MUD · PWSID TX2270012

No health-based violations since 2016

Serves about 10,512 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

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

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 Lakeway water hard?

Somewhat. It measures about 106 mg/L (6.2 grains per gallon), which the USGS classes as moderately hard.

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

About 6.2 gpg. One grain per gallon equals 17.1 mg/L, so 106 mg/L divided by 17.1 gives 6.2.

What size water softener do I need in Lakeway?

For 3 people using 75 gallons each per day, 6.2 gpg works out to about 1,402 grains a day. A 24,000-grain softener covers that with a regeneration about every 17 days.

Has the Lakeway water system had EPA violations?

EPA records show no health-based violations for Lakeway MUD since 2016.

Nearby cities

All 342 cities in Texas

Hardness data: TapWaterData US Water Hardness (utility report, October 17, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.