Water Hardness in Del Rey Oaks, CA
California · 1 zip codes · 12 matched water systems
City avg (weighted): 248 PPM
Dataset updated March 9, 202612 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
Is Del Rey Oaks, CA Water Hard or Soft?
The displayed hardness for Del Rey Oaks, CA is 244 PPM (14.3 GPG) from Cwsc Salinas, classified as hard. The citywide weighted average is 248 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 12 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 Del Rey Oaks
These systems are matched to Del Rey Oaks, CA. 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 |
|---|---|---|---|
| Cwsc Salinas CA2710010 | groundwater | 244 PPM HardUSGS estimate: 250 PPM | |
| Cal Am Water Company - Monterey CA2710004 | surface water | 207 PPM Hard | |
| Alco Water Service CA2710001 | groundwater | 372 PPM Very Hard | |
| Marina Coast Water District CA2710017 | groundwater | 240 PPM Hard | |
| Soledad, City Of CA2710011 | groundwater | 115 PPM Slightly Hard |
Zip Codes in Del Rey Oaks, CA
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 Del Rey Oaks, CA.
Frequently Asked Questions
How hard is the water in Del Rey Oaks, CA?
The citywide weighted average water hardness in Del Rey Oaks, CA is 248 PPM (14.5 GPG), classified as hard. This is based on 12 matched water systems. The gauge highlights Cwsc Salinas, a verified treated-water system, because individual systems can differ from the citywide average.
Do I need a water softener in Del Rey Oaks, CA?
With a citywide average hardness of 248 PPM, a water softener is recommended for homes in Del Rey Oaks. Confirm your tap reading before sizing equipment.
Is hard water in Del Rey Oaks, CA 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 Del Rey Oaks, CA?
Del Rey Oaks, California is served by 12 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 readWater Hardness Scale: PPM and GPG Chart
Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.
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Well water is almost always harder than city water. Learn why, how to test your well, and the best treatment options for hard well water.
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