Hard water in Lake Jackson, TX
Reported by City of Lake Jackson · May 2023
- TX typical
- 112 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Utility report
The water in Lake Jackson carries roughly 159 mg/L of dissolved calcium and magnesium, or 9.3 grains per gallon. That is hard water. The number comes from City of Lake Jackson, dated May 2023.
At 159 mg/L, Lake Jackson is 47 mg/L above the typical Texas figure of 112. Of the 10 nearest cities we track, 6 have softer water and 4 have harder. The range nearby runs from 69 mg/L in Friendswood to 202 in La Marque.
What 159 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 159 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 × 9.3 gpg = 2,092 grains a day. A 24,000-grain unit regenerates about every 11 days.
EPA record for Lake Jackson's water system
No health-based violations since 2016
Serves about 27,314 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 7
- Open now
- 0
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 Lake Jackson water hard?
Yes. It measures about 159 mg/L (9.3 grains per gallon), which the USGS classes as hard.
What is the water hardness in Lake Jackson in grains per gallon?
About 9.3 gpg. One grain per gallon equals 17.1 mg/L, so 159 mg/L divided by 17.1 gives 9.3.
What size water softener do I need in Lake Jackson?
For 3 people using 75 gallons each per day, 9.3 gpg works out to about 2,092 grains a day. A 24,000-grain softener covers that with a regeneration about every 11 days.
Has the Lake Jackson water system had EPA violations?
EPA records show no health-based violations for City of Lake Jackson since 2016. There were also 7 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Clute163 mg/LHard
- Angleton78 mg/LModerately hard
- Freeport103 mg/LModerately hard
- Sienna170 mg/LHard
- Galveston164 mg/LHard
- Hitchcock145 mg/LHard
- Santa Fe100 mg/LModerately hard
- Friendswood69 mg/LModerately hard
- La Marque202 mg/LVery hard
- Pearland79 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (utility report, May 3, 2023), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.