Lonz Pools Service

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About

Great service for Great pricess. Service areas in Ontario, Rancho Cucamonga, Upland. All of San Bernardino. and Riverside Also Service Commercial accounts. We also do Plaster work, Cement work. Pump and filter installs

Overview

Hired 59 times

Background checked

2 employees

13 years in business

Business hours

This pro hasn't listed their business hours.

Payment methods

This pro accepts payments via Cash, Check, Credit card, PayPal, Venmo, and Zelle.

Services offered

Work needed

Pour new concrete

Concrete location

Patio or porch

Property type

Residential

Commercial

Projects and media

20 photos

Projects and media

20 photos

Reviews

Customers rated this pro highly for responsiveness, value, and professionalism.

3.3

16 reviews

5

56%

4

0%

3

0%

2

0%

1

44%

Read reviews that mention:

Justin L.

Jul 3, 2025

•

Hired on Thumbtack

Mario came to my house and took care of business for my pool. After just one visit the pool looks better than it has in quite some time. His rates are better than most and he’s down to earth.

Details: Cleaning and Maintenance • In-ground pool • Concrete • Chlorinated water • Pool water is clear • Algae • Leaves • I do not need my pool drained • Once a week

Swimming Pool Cleaning, Maintenance, and Inspection

ZUOFEI W.

Nov 30, 2023

•

Hired on Thumbtack

Mario did a great job replacing my pool filter. His expert recommendations and efficient replacement of my pool filter, along with impeccable plumbing work, exceeded my expectations. Mario’s reasonable pricing adds to the overall satisfaction.

Details: In ground • Outdoors • Concrete • Filter replacement • Leaks

Swimming Pool Repair

Ken L.

Apr 4, 2023

•

Hired on Thumbtack

Great job. It’s still working. Had new multiport installed on sand filter

Details: In ground • Outdoors • Concrete • Non-functional pump

Lonz Pools Service's reply

Great to hear that. thanks for the review.

Swimming Pool Repair

Cycely S.

Jan 21, 2025

•

Hired on Thumbtack

The man has messed up my pool he has not showed up. He only responds to text messages when he feels like it now my pool is completely black because he keeps saying he’s gonna show up and never does very very unprofessional. I would give him zero stars if I could. Now is gonna cost me way more to get my pool back the way it was when he initially touched my pool, very disappointed. He should not be allowed to have a professional platform when he’s not doing professional work I’m angry.

Details: Cleaning and Maintenance • In-ground pool • Pool water is clear • I do not need my pool drained • Every other week

Lonz Pools Service's reply

People like you is why i don't like helping out. First of let's get the facts straight. your pool was destroyed before I started i have all text and pictures to prove it. second wen I did get your pool going everything was fine buy you wanted me to service pool every other week even after I recommend that is not good idea you still said every other week.. 3rd i show up and your land lord doesn't fix the power outlet so I can't even turn on the pool and it takes 2 and a half weeks before you tell me it's ready. you expect me to use all my chemicals on your pool wen I didn't cause that. no not doing it anymore. then of course the winds came. I have my business for a reason but I don't deal with people like you. trying to get away with not paying for what you should pay for.

Swimming Pool Cleaning, Maintenance, and Inspection

Roxanne T.

Mar 2, 2023

•

Hired on Thumbtack

I am happy with this ongoing service and the repairs. Competitive prices and good communication.

Details: Cleaning and Maintenance • In-ground pool • Concrete • Chlorinated water • My pool water is clear • I do not need my pool drained • Once a week

Lonz Pools Service's reply

Thank you

Swimming Pool Cleaning, Maintenance, and Inspection

Credentials

Background Check

Mario Diaz

Lonz Pools Service

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