Water Hardness in Selma, TX
Texas · 1 zip codes · 7 matched water systems
City avg (weighted): 242 PPM
Dataset updated March 9, 20267 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
Is Selma, TX Water Hard or Soft?
The displayed hardness for Selma, TX is 150 PPM (8.8 GPG) from Crystal Clear Sud, classified as moderately hard. The citywide weighted average is 242 PPM.
Water hardness is not a drinking-water safety score. It measures calcium and magnesium minerals, and address-level results can shift by pressure zone, supply blend, building plumbing, or private well.
How this city reading is built
This city reading is a weighted rollup across 7 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
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 Selma
These systems are matched to Selma, TX. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| Green Valley Sud TX0940020 | surface water | 239 PPM Hard | |
| City Of Schertz TX0940003 | groundwater | 263 PPM Very Hard | |
| Springs Hill Sud TX0940022 | surface water | 250 PPM Very Hard | |
| City Of Seguin TX0940002 | surface water | 250 PPM Very Hard | |
| Crystal Clear Sud TX0940015 | surface water | 150 PPM Moderately HardUSGS estimate: 208 PPM |
Zip Codes in Selma, TX
What This Means For You
Use this city 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.
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 Selma, TX.
Frequently Asked Questions
How hard is the water in Selma, TX?
The citywide weighted average water hardness in Selma, TX is 242 PPM (14.1 GPG), classified as hard. This is based on 7 matched water systems. The gauge highlights Crystal Clear Sud, a verified treated-water system, because individual systems can differ from the citywide average.
Do I need a water softener in Selma, TX?
With a citywide average hardness of 242 PPM, a water softener is recommended for homes in Selma. Confirm your tap reading before sizing equipment.
Is hard water in Selma, 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 Selma, TX?
Selma, Texas is served by 7 matched water systems across 1 zip code.
Learn More About Your Water
How to Test Water Hardness at Home
Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.
8 min readHard Water vs Soft Water: Key Differences
Compare hard water and soft water by minerals, taste, soap lather, skin, hair, plumbing, and treatment needs.
10 min readPPM to GPG Converter + Water Hardness Scale Explained
Convert between PPM and GPG instantly. Understand the USGS water hardness scale and what your numbers mean for your home.
5 min read