How hard is the water in Seabrook, TX?

Tap water hardness
61mg/L
3.6gpg
Moderately hardReports range 39–61

Reported by City of Seabrook · July 2022

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

The water in Seabrook carries roughly 61 mg/L of dissolved calcium and magnesium, or 3.6 grains per gallon. That is moderately hard water. The number comes from City of Seabrook, dated July 2022. Reports for this system disagree, with values from 39 to 61 mg/L.

Seabrook on the hardness scale, with nearby cities
060120180240300360+TX typical 112Webster: 42 mg/LWebster 42La Porte: 51 mg/LLa Porte 51Nassau Bay: 67 mg/LNassau Bay 67Pasadena: 68 mg/LPasadena 68Friendswood: 69 mg/LFriendswood 69Deer Park: 85 mg/LDeer Park 85Bacliff: 94 mg/LBacliff 94League City: 114 mg/LLeague City 114Dickinson: 171 mg/LDickinson 171Texas City: 200 mg/LTexas City 200Seabrook 61mg/L as calcium carbonate060120180240300360+TX 112Webster: 42 mg/LWebster 42La Porte: 51 mg/LLa Porte 51Nassau Bay: 67 mg/LNassau Bay 67Deer Park: 85 mg/LDeer Park 85Bacliff: 94 mg/LBacliff 94League City: 114 mg/LLeague City 11461 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 61 mg/L, Seabrook is 51 mg/L below 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 42 mg/L in Webster to 200 in Texas City.

What 61 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 Seabrook

3 people × 75 gallons a day × 3.6 gpg = 801 grains a day. A 24,000-grain unit regenerates about every 29 days.

Size it for your household

EPA record for Seabrook's water system

City of Seabrook · PWSID TX1010062

No health-based violations since 2016

Serves about 13,560 people from surface water.

Health-based
0
Monitoring or reporting
1
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 Seabrook water hard?

Somewhat. It measures about 61 mg/L (3.6 grains per gallon), which the USGS classes as moderately hard.

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

About 3.6 gpg. One grain per gallon equals 17.1 mg/L, so 61 mg/L divided by 17.1 gives 3.6.

What size water softener do I need in Seabrook?

For 3 people using 75 gallons each per day, 3.6 gpg works out to about 801 grains a day. A 24,000-grain softener covers that with a regeneration about every 29 days.

Has the Seabrook water system had EPA violations?

EPA records show no health-based violations for City of Seabrook since 2016. There were also 1 monitoring or reporting violation, 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 27, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.