Where does the water in 78012 come from?

Water for zip code 78012 in Christine, Texas is provided by 2 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 78012

Christine, Texas · Atascosa County

177 PPM

10.3 GPG

Moderately Hard

0Soft60120180300+

High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 2 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 2 matched water systems. 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 USGS-backed source

2 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.

Water source profile

Primarily groundwater

Groundwater commonly picks up calcium and magnesium after contact with rock and soil. 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 78012

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.

2 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.

Water System	Source	Hardness	Pop. Served	Data Source
City Of Pleasanton TX0070003	groundwater	183 PPM Hard	17,985	High Confidence — USGS Monitoring
City Of Christine TX0070017	groundwater	11 PPM Soft	696	Estimated — Nearby Data

City Of Pleasanton

TX0070003

Hard

183 PPMgroundwater17,985 servedHigh Confidence — USGS Monitoring

City Of Christine

TX0070017

Soft

11 PPMgroundwater696 servedEstimated — Nearby Data

Nearby Zip Codes

78026140 78064183 78008183 78011178 78075150 78007260 7811365 78050183 78005150 78065177 78071211 78145274

What This Means For You

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

Moderately Hard Water

Your water is moderately hard. You're likely seeing scale buildup on fixtures, spotty dishes, and may notice dry skin or hair. A water softener or conditioner can help.

Recommended Products

Water Hardness Test Kit

Our PickVarify (150 Strips)Also GreatJNW Direct (150 Strips)

Salt-Free Water Conditioner

Our PickSpringWell Salt-Free Cartridge

Salt-Based Water Softener

Our PickAFWFilters Fleck 5600SXT 48K Also GreatWhirlpool WHES40E 40K Also GreatAFWFilters 64K Grain Also GreatAFWFilters Iron Pro 2 64K Also GreatSpringWell Filter + Softener Combo

Shower Head Filter

Our PickWeddell Duo Also GreatAquaBliss SF100 Also GreatSprite Pure 7-Setting Also GreatAqua Earth 20-Stage

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | 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 Christine, TX (78012).

Submit Your Data

Frequently Asked Questions

Is the water hard in Christine, TX (78012)?

The average water hardness in 78012 is 177 PPM (10.3 GPG), which is classified as moderately hard.

Do I need a water softener in 78012?

With hardness of 177 PPM, a water softener is worth considering for homes in 78012.

Is hard water in 78012 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 78012?

Zip code 78012 in Christine, Texas is served by 2 water systems.