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Water Hardness in La Marque, TX

Texas · 1 zip codes · 8 matched water systems

200 PPM
11.7 GPG
Hard
0Soft60120180300+
Verified — Annual Water Quality Report

City avg (weighted): 200 PPM

Dataset updated March 9, 20268 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
City Of League City
TX0840007
Water source: surface water
Serves: 128,412
USGS environmental estimate: 113 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 8 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
8 verified treated-water sources
8 matched systems total for this city; treated-water reports are prioritized when available.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems in La Marque

These systems are matched to La Marque, TX. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

8 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
City Of League City
TX0840007
Hard
200 PPMsurface water128,412 servedVerified — Annual Water Quality Report
Source water: 113 PPM
City Of Texas City
TX0840008
Hard
200 PPMsurface water54,357 servedVerified — Annual Water Quality Report
Source water: 96 PPM
City Of Galveston
TX0840003
Hard
200 PPMsurface water52,326 servedVerified — Annual Water Quality Report
Source water: 96 PPM
City Of Friendswood
TX0840002
Hard
200 PPMsurface water43,190 servedVerified — Annual Water Quality Report
Source water: 79 PPM
Galveston County Wcid 1
TX0840001
Hard
200 PPMsurface water30,399 servedVerified — Annual Water Quality Report
Source water: 113 PPM
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in La Marque, TX

What This Means For You

Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

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Frequently Asked Questions

How hard is the water in La Marque, TX?

The citywide weighted average water hardness in La Marque, TX is 200 PPM (11.7 GPG), classified as hard. This is based on 8 matched water systems.

Do I need a water softener in La Marque, TX?

With a citywide average hardness of 200 PPM, a water softener is recommended for homes in La Marque. Confirm your tap reading before sizing equipment.

Is hard water in La Marque, TX safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve La Marque, TX?

La Marque, Texas is served by 8 matched water systems across 1 zip code.

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