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Water Hardness in Rio Grande City, TX

Texas · 1 zip codes · 4 matched water systems

213 PPM
12.5 GPG
Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 20264 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 4 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
4 estimated sources
This city reading needs local confirmation before equipment sizing or purchase decisions.
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 Rio Grande City

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

4 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 Roma
TX2140007
Hard
213 PPMsurface water19,464 servedEstimated — Nearby Data
City Of Rio Grande City
TX2140018
Hard
213 PPMsurface water18,912 servedEstimated — Nearby Data
Rio Wsc
TX2140016
Hard
213 PPMsurface water6,639 servedEstimated — Nearby Data
El Tanque Wsc
TX2140029
Hard
213 PPMsurface water3,000 servedEstimated — Nearby Data

Zip Codes in Rio Grande City, 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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If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Rio Grande City, TX.

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Frequently Asked Questions

How hard is the water in Rio Grande City, TX?

The citywide weighted average water hardness in Rio Grande City, TX is 213 PPM (12.5 GPG), classified as hard. This is based on 4 matched water systems.

Do I need a water softener in Rio Grande City, TX?

With a citywide average hardness of 213 PPM, a water softener is recommended for homes in Rio Grande City. Confirm your tap reading before sizing equipment.

Is hard water in Rio Grande City, 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 Rio Grande City, TX?

Rio Grande City, Texas is served by 4 matched water systems across 1 zip code.

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