Hard water in Hutto, TX
Reported by Manville WSC · September 2025
- TX typical
- 112 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Utility report
The water in Hutto carries roughly 141 mg/L of dissolved calcium and magnesium, or 8.2 grains per gallon. That is hard water. The number comes from Manville WSC, dated September 2025. Reports for this system disagree, with values from 141 to 167 mg/L.
Hutto sits 29 mg/L above the typical Texas figure of 112. Of the 10 nearest cities we track, 4 have softer water and 6 have harder. The range nearby runs from 63 mg/L in Wells Branch to 178 in Pflugerville.
What 141 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 141 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.
3 people × 75 gallons a day × 8.2 gpg = 1,856 grains a day. A 24,000-grain unit regenerates about every 12 days.
EPA record for Hutto's water system
No health-based violations since 2016
Serves about 29,580 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 0
- Open now
- 0
EPA lists City of Hutto as the system serving Hutto. The hardness figure above comes from a different system's report, which TapWaterData uses for Hutto.
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 Hutto water hard?
Yes. It measures about 141 mg/L (8.2 grains per gallon), which the USGS classes as hard.
What is the water hardness in Hutto in grains per gallon?
About 8.2 gpg. One grain per gallon equals 17.1 mg/L, so 141 mg/L divided by 17.1 gives 8.2.
What size water softener do I need in Hutto?
For 3 people using 75 gallons each per day, 8.2 gpg works out to about 1,856 grains a day. A 24,000-grain softener covers that with a regeneration about every 12 days.
Has the Hutto water system had EPA violations?
EPA records show no health-based violations for City of Hutto since 2016.
Nearby cities
- Taylor160 mg/LHard
- Round Rock169 mg/LHard
- Pflugerville178 mg/LHard
- Wells Branch63 mg/LModerately hard
- Brushy Creek74 mg/LModerately hard
- Georgetown148 mg/LHard
- Manor92 mg/LModerately hard
- Elgin63 mg/LModerately hard
- Cedar Park157 mg/LHard
- Sonterra147 mg/LHard
Hardness data: TapWaterData US Water Hardness (utility report, September 17, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.