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Calabasas tap water averaged about 8 grains per gallon of hardness in 2025 — hard enough to leave spots on shower glass, crust on fixtures and scale inside tankless water heaters. Praz Pure Water has been installing and servicing water softeners for homes and businesses in and around Calabasas for over 20 years.
How hard is Calabasas water, exactly?
Calabasas is supplied by the Las Virgenes Municipal Water District, which publishes its test results every year. Here is the most recent data:
| Measure | Calabasas (2025) | What it means |
|---|---|---|
| Average hardness | 142 ppm (about 8 grains per gallon) | Hard |
| Range across the year | 119 – 176 ppm (7 – 10 gpg) | Hard |
| Calcium | 33 ppm average | The mineral that becomes scale |
| Disinfectant | Chloramines | Affects taste and smell |
Source: Las Virgenes Municipal Water District, 2025 Water Quality and Consumer Confidence Report (water sampled in 2025). Grains per gallon converted from ppm.
BEFOREAFTERBefore and after: a Praz Pure Water softener installed next to the water heater, plumbed in copper.
Calabasas has no local drinking water source. All of it is imported from Northern California through the State Water Project and treated by the Metropolitan Water District before Las Virgenes delivers it to your home. The water meets every drinking water standard; hardness and the chloramine taste are the everyday complaints, and both are fixable.
What hard water costs Calabasas homes
- Tankless and tank water heaters. Scale insulates the heating surface from the water, so the heater works harder and fails sooner. Tankless units are especially sensitive.
- Shower glass, stone and fixtures. Hard water leaves spots and a white film on glass enclosures, natural stone and polished fixtures.
- Appliances. Dishwashers, ice makers, steam ovens and espresso machines fail at the scale line first, and most warranties exclude scale damage.
- Skin, hair and laundry. Soap does not lather or rinse well in hard water, which leaves skin dry and towels stiff.
Your options in Calabasas
There is no single right system. It depends on your water, the size of your home and what you want to fix. We will tell you honestly which one you need — including when it is the less expensive one.
Water softener — the complete fix
Removes the calcium and magnesium, so there is no new scale, no spotting and soap lathers properly. Our metered valves regenerate based on actual water use, and we size the system for larger homes with several bathrooms.
Whole-house filtration
Takes out the chloramine taste and smell at every tap and shower. See whole-house water filtration, or pair it with a softener in our softener and filter package.
Reverse osmosis drinking water
An under-sink reverse osmosis system gives you great-tasting drinking and cooking water and ends the bottled water runs.
Areas we serve around Calabasas
Calabasas (91302), Hidden Hills, Agoura Hills, Westlake Village, Woodland Hills and Tarzana. We also cover Sherman Oaks, Burbank, Glendale, Pasadena and the wider Los Angeles area.
How it works
We test the water at your own tap and show you the reading. No charge, no obligation.
We tell you which system fits your home and budget — and when you do not need the bigger one.
Usually a single visit, with a proper bypass and drain, and a walkthrough before we leave.
Warranty on parts and labor, service and salt delivery, and a local team that answers the phone.
We test your tap, show you the numbers and give you a firm price — no obligation.
Request your free water test
Tell us a little about your home or business and we will call you to schedule a visit.
- We test the water at your own tap
- You see the results on the spot
- A firm price before any work begins
- No charge and no obligation
Prefer to talk? Call (310) 894-8488
Frequently asked questions
How hard is the water in Calabasas, CA?
Las Virgenes Municipal Water District, which supplies Calabasas, reported total hardness of 119 to 176 ppm in its 2025 water quality report, with an average of 142 ppm. That is roughly 7 to 10 grains per gallon, averaging about 8, which is classified as hard water.
Where does Calabasas water come from?
All of it is imported. Las Virgenes Municipal Water District has no local drinking water source; the supply travels from Northern California through the State Water Project and is treated by the Metropolitan Water District before it reaches Calabasas. It is disinfected with chloramines.
Do I need a water softener in Calabasas?
At about 8 grains per gallon, scale builds up wherever water is heated: tankless water heaters, dishwashers, shower glass and fixtures. A softener stops that. If your main complaint is taste or the disinfectant smell rather than spots and scale, a filter may be the better first step. We test your water and tell you which one you need.
What size water softener does a larger home need?
It depends on how many bathrooms run at once and how much water the household uses. A softener that is too small for the home drops water pressure and regenerates too often. We size the system to your flow rate and water use during the free water test.
Do I need a softener or a filter?
They solve different problems. A softener removes the calcium and magnesium that cause scale; a whole-house filter removes chloramine, taste and odor. Many Calabasas homes choose both, which is why we offer a combined softener and filter package.
How much does a water softener cost in Calabasas?
It depends on the size of the home and the system. We test your water first, recommend the right system and give you a firm price that includes professional installation and warranty before any work begins.
How long does installation take?
Most homes are finished in a single visit, typically two to four hours depending on where the main line and drain are. We check the install location during the free water test.
Do you serve the areas around Calabasas?
Yes. We serve Calabasas, Hidden Hills, Agoura Hills, Westlake Village, Woodland Hills and Tarzana, as well as the wider Los Angeles area.