Free water test · California
Know your water
Start with a free test
Understand the water in your home with a free in-home test and personalized guidance from a Karofi water expert
- No cost. No obligation to buy
- About 30 minutesFor basic on-site results
- In your homeOr start with a phone consultation
- No pressure to buyUnderstand first. Decide when you're ready
Start at your tap
Your home's water deserves a closer look
Your utility's report describes the public water system. An at-home test helps you understand what reaches your faucet—and which checks make sense for your home
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Tell us about your home
Share your water source, concerns and preferred time. We'll contact you to confirm your appointment
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Check your water together
An expert checks basic water indicators at your tap and explains what the readings mean
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Choose your next step
Get basic results in about 30 minutes and discuss suitable options, with no obligation to purchase
What we test
Make sense of what's in your water
Your expert recommends the right checks based on your water source, ZIP code and concerns
Scale & white spots
Water hardness
Measures calcium and magnesium—the minerals associated with spots on dishes and buildup on fixtures and appliances
An overall reading
Total dissolved solids
A quick reading of dissolved minerals and salts. Your expert explains the result in context with your water source and other checks
Taste & smell
Chlorine & chloramine
Looks at disinfectants used in public water supplies that may affect the taste and smell of your tap water
Balance & stains
pH & iron
Helps explore water balance, metallic taste and orange-brown stains on sinks, fixtures or laundry
Need deeper answers?
Lead, arsenic, nitrate, PFAS and bacteria require appropriate lab analysis. Ask about certified third-party testing; any additional costs are explained before a sample is sent
When to test
What have you noticed at home?
Small changes in your daily routine can raise questions about your water. Tell us what sounds familiar
Select all that apply
Water in California
Different places. Different water
Snowmelt, rivers, imported supplies and groundwater all shape what reaches your tap
CaliforniaSouthern California
Los Angeles · Orange County · San Diego
Hard water. Familiar signs
Imported supplies, including Colorado River water, can bring high mineral levels. Common concerns include hard water, disinfectant taste and odor, and scale on fixtures and water heaters
- Water hardness
- Taste & odor
- Scale buildup
CaliforniaBay Area
San Francisco · San Jose · Oakland
Your source and your plumbing matter
Water can vary with local groundwater blends. Common questions involve chloramine, changing hardness and older home plumbing. Specific concerns such as lead call for appropriate laboratory testing
- Chloramine
- Varying hardness
- Older plumbing
CaliforniaCentral Valley
Fresno · Bakersfield · Modesto
A closer look at well water
Private wells and groundwater can raise questions about dissolved solids, iron and manganese. Concerns about nitrate, arsenic or bacteria need the right laboratory analysis alongside basic readings
- Private wells
- Dissolved solids
- Lab testing options
CaliforniaInland Empire & Sacramento
Riverside · San Bernardino · Sacramento
Understand your local water mix
Hard water and changes in taste are common questions. Some groundwater supplies also raise concerns about emerging contaminants such as PFAS, which require specialized laboratory testing
- Hard water
- Taste changes
- Specific contaminants
Water conditions vary by address and source. Share your ZIP code so we can confirm service availability for your home
Photo credits: Southern California: ubeyonroad / Unsplash · Bay Area: Nikhil Mistry / Unsplash · Central Valley: Top Hand Media · CC BY-SA 4.0 · Resized · Inland Empire & Sacramento: Michael Kahn / Unsplash
Your free water test
Let's get to know your water
Schedule an in-home test or start with a phone consultation. Our team will confirm availability and help you take the next step
- A time that works for youRequest an evening or Saturday visit
- Guidance for your homeDiscuss your water, fixtures and daily needs
- Free, no-obligation adviceUnderstand your options before you decide
Let's start with your home
Three quick steps. We'll call to confirm your visit
- Your details
- Preferred time
- Review
You're all set
A Karofi water expert will call you within 1 business day to confirm your appointment
- When
- Address
Questions? Call 833-452-7634
Frequently asked questions
A little clarity before your test
What to expect from your free water consultation
Is the water test really free?
Yes. The in-home water test and consultation are free, with no obligation to buy. If you choose certified third-party laboratory testing, your water expert will explain any costs before a sample is sent
What happens during my appointment?
A water expert discusses your concerns, checks basic water indicators and explains the results. Basic on-site results are typically available in about 30 minutes. You can then discuss suitable water treatment options, with no pressure to purchase
What's the difference between my city's report and a home water test?
Your utility's Consumer Confidence Report describes the public water system. An at-home check looks at water from your own tap, where your water source and home plumbing can affect the readings. Basic testing does not identify every contaminant or establish that water is safe to drink
Can you test for lead, PFAS or bacteria?
These concerns require appropriate laboratory analysis rather than basic on-site readings. Based on your water source and concerns, your expert can discuss certified third-party lab testing and explain any additional costs
What if my home uses a private well?
Tell us when you request your appointment. Private well water needs a testing approach suited to the source and local concerns. Your expert can explain the role of on-site readings and laboratory analysis for issues such as bacteria, nitrate or arsenic
Why is Southern California water often hard?
Much of Southern California uses imported water, including Colorado River supplies containing calcium and magnesium. These hardness minerals can contribute to scale and spotting on fixtures and glassware
Can I choose an evening or Saturday appointment?
You can request an evening or Saturday time window in the form. All times are Pacific Time. Karofi will contact you to confirm service coverage and availability before the visit
Can I start with a phone consultation?
Yes. Choose "Phone consultation" in the form or call 833-452-7634. A water expert can discuss your concerns and help you decide on an appropriate next step
Better water starts with understanding it
Take the first step with a free, no-obligation water test