Water Hardness in 93437
Lompoc, California · Santa Barbara 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 93437
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 Santa Maria Utilities Department CA4210011 | surface water | 400 PPM Very HardUSGS estimate: 608 PPM | |
City Of Santa Barbara Water Department CA4210010 | surface water | 53 PPM SoftUSGS estimate: 493 PPM | |
Goleta Water District CA4210004 | surface water | 380 PPM Very HardUSGS estimate: 586 PPM | |
Lompoc-City Water Utility Div CA4210006 | surface water | 293 PPM Very HardUSGS estimate: 607 PPM | |
Golden State Water Company - Orcutt CA4210016 | surface water | 189 PPM 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.
Very Hard Water - Treatment Strongly Recommended
Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.
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 Lompoc, CA (93437).
Frequently Asked Questions
Is the water hard in Lompoc, CA (93437)?
The average water hardness in 93437 is 290 PPM (17 GPG), which is classified as very hard.
Do I need a water softener in 93437?
With hardness of 290 PPM, a water softener is recommended for homes in 93437.
Is hard water in 93437 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 93437?
Zip code 93437 in Lompoc, California is served by 8 water systems.
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