Where does the water in 78043 come from?

Water for zip code 78043 in Rio Bravo, Texas is provided by 1 water system. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 78043

Rio Bravo, Texas · Webb County

260 PPM

15.2 GPG

Very Hard

0Soft60120180300+

Verified - Annual Water Quality Report

Dataset updated March 9, 2026Matched to 1 water systemTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 1 matched water system. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis

1 verified treated-water source

1 matched system total for this ZIP; 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 Serving 78043

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

1 water system

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.

Water System	Source	Hardness	Pop. Served	Data Source
City Of Laredo TX2400001	surface water	260 PPM Very Hard USGS estimate: 259 PPM	260,046	Verified - Annual Water Quality Report

City Of Laredo

TX2400001

Very Hard

260 PPMsurface water260,046 servedVerified - Annual Water Quality Report

Source water: 259 PPM

Nearby Zip Codes

78041260 78040260 78371260 78046260 78369260 78344260 78045260

What This Means For You

Use this ZIP reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.

Methodology Data sources How to test your water

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Rio Bravo, TX (78043).

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Frequently Asked Questions

Is the water hard in Rio Bravo, TX (78043)?

The average water hardness in 78043 is 260 PPM (15.2 GPG), which is classified as very hard.

Do I need a water softener in 78043?

With hardness of 260 PPM, a water softener is recommended for homes in 78043.

Is hard water in 78043 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 78043?

Zip code 78043 in Rio Bravo, Texas is served by 1 water system.