Water Hardness in 95340
Red Top, California · Merced County
Dataset updated March 9, 2026Matched to 6 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 6 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 95340
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 |
|---|---|---|---|
City Of Merced CA2410009 | groundwater | 152 PPM Moderately Hard | |
City Of Los Banos CA2410005 | groundwater | 233 PPM Hard | |
City Of Atwater CA2410001 | groundwater | 217 PPM Hard | |
City Of Livingston CA2410004 | groundwater | 217 PPM Hard | |
Castle Airport CA2410700 | groundwater | 152 PPM Moderately Hard |
Nearby Zip Codes
What This Means For You
Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.
Hard Water - Treatment Recommended
Your water is hard. Scale buildup is likely affecting your plumbing and appliances, reducing their lifespan and efficiency. A water softener is recommended to protect your home.
Recommended Products
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 Red Top, CA (95340).
Frequently Asked Questions
Is the water hard in Red Top, CA (95340)?
The average water hardness in 95340 is 188 PPM (11 GPG), which is classified as hard.
Do I need a water softener in 95340?
With hardness of 188 PPM, a water softener is recommended for homes in 95340.
Is hard water in 95340 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 95340?
Zip code 95340 in Red Top, California is served by 6 water systems.
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