Water Hardness in 93041
Port Hueneme, California · Ventura County
Dataset updated March 9, 2026Matched to 25 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 25 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 93041
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 |
|---|---|---|---|
| Oxnard Water Dept CA5610007 | surface water | 403 PPM Very HardUSGS estimate: 601 PPM | |
| Ventura Water Department CA5610017 | surface water | 601 PPM Very Hard | |
| Ventura Wwd No. 8 - Simi Valley CA5610023 | surface water | 193 PPM HardUSGS estimate: 790 PPM | |
| Cal American Water Co CA5610040 | surface water | 254 PPM Very Hard | |
| City Of Thousand Oaks Water Department CA5610020 | surface water | 790 PPM Very 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 Port Hueneme, CA (93041).
Frequently Asked Questions
Is the water hard in Port Hueneme, CA (93041)?
The average water hardness in 93041 is 417 PPM (24.4 GPG), which is classified as very hard.
Do I need a water softener in 93041?
With hardness of 417 PPM, a water softener is recommended for homes in 93041.
Is hard water in 93041 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 93041?
Zip code 93041 in Port Hueneme, California is served by 25 water systems.
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.
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