How hard is the water in Thousand Oaks, CA?

The average water hardness in Thousand Oaks, CA is 417 PPM (24.4 GPG), which is classified as very hard. This is based on data from 25 water systems serving the area.

Do I need a water softener in Thousand Oaks, CA?

With an average hardness of 417 PPM, a water softener is recommended for homes in Thousand Oaks. A water softener is strongly recommended. Very hard water can significantly reduce appliance lifespan.

How many water systems serve Thousand Oaks, CA?

Thousand Oaks, California is served by 25 water systems across 1 zip code.

Water Hardness in Thousand Oaks, CA

California · 1 zip codes · 25 water systems

403 PPM

23.6 GPG

Very Hard

0Soft60120180300+

Verified — State Lab Tested

City avg (weighted): 417 PPM

Based on laboratory testing of treated tap water reported to state regulators. Updated periodically with the latest compliance data.

Primary Water System

Oxnard Water Dept

CA5610007

403 PPM

23.6 GPG · Very Hard

Verified — State Lab Tested

USGS environmental estimate: 601 PPM

Serves: 200,232

What This Means For You

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.