Water Hardness in 77331
Coldspring, Texas · San Jacinto County
Dataset updated March 9, 2026Matched to 8 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 8 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.
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 77331
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.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| San Jacinto Sud TX2040033 | groundwater | 123 PPM Moderately Hard | |
| One Five O Wsc TX2040019 | groundwater | 123 PPM Moderately Hard | |
| Mercy Wsc TX2040058 | groundwater | 137 PPM Moderately Hard | |
| Holiday Villages Of Livingston TX2040067 | groundwater | 130 PPM Moderately Hard | |
| Cape Royale Utility District TX2040005 | groundwater | 123 PPM Moderately Hard |
Nearby Zip Codes
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.
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 Coldspring, TX (77331).
Frequently Asked Questions
Is the water hard in Coldspring, TX (77331)?
Our estimate for 77331 is 126 PPM (7.4 GPG), but it is based on nearby, county, or state-level data rather than a direct treated tap-water report for this exact location. Confirm with your utility or a home test.
Do I need a water softener in 77331?
Do not size a softener from this estimate alone. Confirm the actual tap-water hardness before choosing treatment equipment.
Is hard water in 77331 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 77331?
Zip code 77331 in Coldspring, Texas is served by 8 water systems.
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