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Water treatment & purification system installers and replacers in Los Angeles

Avatar for Leon Plumbing
Leon Plumbing
2409 Janet Lee Drive
4.92(
60
)
Approved Pro
Leon Plumbing
2409 Janet Lee Drive
4.92(
60
)
Approved Pro
Customers say: True professional
19 local quotes requested
42 years of experience

We are a locally family owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of Heating/ Air Conditioning services and more. Providing customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. With 20 years of experience in the field we offer excellence every time.

"Great service, reasonable prices, and they keep their word on time and estimates. My machine is running just like new. "

Nick T on June 2025

We are a locally family owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of Heating/ Air Conditioning services and more. Providing customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction. With 20 years of experience in the field we offer excellence every time.

"Great service, reasonable prices, and they keep their word on time and estimates. My machine is running just like new. "

Nick T on June 2025


Avatar for CUSTOM H 2 0
CUSTOM H 2 0
801 W. Lambert Rd
5.00(
30
)
Approved Pro
CUSTOM H 2 0
801 W. Lambert Rd
5.00(
30
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
34 local quotes requested

CUSTOM H 2 0 is your area leader for all of your water treatment needs. We know customer service is key to a job well done, and ours is the best around. When you want top quality work at an always fair price, call the professionals at CUSTOM H20. We are an independent company. This allows us to provide the highest quality water treatment equipment and service at very discounted prices. Thank you.

"Custom H2O does a significant amount of large commercial projects and rely mostly on word of mouth. Many of their clients include hospitals, so the equipment they sell is very high performance. I spoke with the president, Chris over the phone about initial details on what I am looking for in a water softener. After that, Chris made a point to schedule a visit to see the house and plumbing before proceeding. He looked over the overall layout, checked the water pressure, and took detailed measurements before advising us on our installation options and products. The discussion focused on key concepts like different substances carbon and resin filter out, not about sales gimmicks or overselling. After the initial quote, Chris actually called to hold off the installation for a week to take advantage of an upcoming manufacturer rebate. Their knowledge, experience, and integrity speak volumes."

Andy L on April 2025

CUSTOM H 2 0 is your area leader for all of your water treatment needs. We know customer service is key to a job well done, and ours is the best around. When you want top quality work at an always fair price, call the professionals at CUSTOM H20. We are an independent company. This allows us to provide the highest quality water treatment equipment and service at very discounted prices. Thank you.

"Custom H2O does a significant amount of large commercial projects and rely mostly on word of mouth. Many of their clients include hospitals, so the equipment they sell is very high performance. I spoke with the president, Chris over the phone about initial details on what I am looking for in a water softener. After that, Chris made a point to schedule a visit to see the house and plumbing before proceeding. He looked over the overall layout, checked the water pressure, and took detailed measurements before advising us on our installation options and products. The discussion focused on key concepts like different substances carbon and resin filter out, not about sales gimmicks or overselling. After the initial quote, Chris actually called to hold off the installation for a week to take advantage of an upcoming manufacturer rebate. Their knowledge, experience, and integrity speak volumes."

Andy L on April 2025


Avatar for AAA Plumbing Solutions Inc
AAA Plumbing Solutions Inc
1840 West 220 Street Suite 320
4.83(
6
)
Approved Pro
AAA Plumbing Solutions Inc
1840 West 220 Street Suite 320
4.83(
6
)
Approved Pro
Customers say: Quick response
23 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Mike and his crew did a fantastic job, they even worked after hours on our commercial building. You can really count on them to be fair. You get what you pay for! Pay once hire once. I’m so happy I found a great plumber that can do it all! They worked for us and made sure site area was buttoned up very very nicely taking into account of the tenants"

Claudia W on March 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Mike and his crew did a fantastic job, they even worked after hours on our commercial building. You can really count on them to be fair. You get what you pay for! Pay once hire once. I’m so happy I found a great plumber that can do it all! They worked for us and made sure site area was buttoned up very very nicely taking into account of the tenants"

Claudia W on March 2025


Avatar for Pro Water Solutions, Inc.
Pro Water Solutions, Inc.
25040 Ave Tibbitts Ste D
4.96(
54
)
Approved Pro
Pro Water Solutions, Inc.
25040 Ave Tibbitts Ste D
4.96(
54
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
133 local quotes requested

Pro Water Solutions, Inc., specializes in residential and commercial water treatment and purification systems. With 20 plus years of expertise, our customer service is the best. Your family's health is our number one reason for being in business. we have no high-pressure sales techniques. You will meet with a contractor/owner, not a commissioned sales person. We carry all technologies that work well. We are family owned and operated and have been in business since 2003. To learn more about our products please call us or go to our web site www.prowatersolutions.com

"Clean install, quality work."

Paul P on August 2024

Pro Water Solutions, Inc., specializes in residential and commercial water treatment and purification systems. With 20 plus years of expertise, our customer service is the best. Your family's health is our number one reason for being in business. we have no high-pressure sales techniques. You will meet with a contractor/owner, not a commissioned sales person. We carry all technologies that work well. We are family owned and operated and have been in business since 2003. To learn more about our products please call us or go to our web site www.prowatersolutions.com

"Clean install, quality work."

Paul P on August 2024


Avatar for BENJAMIN FRANKLIN PLUMBING OF LONG BEACH
BENJAMIN FRANKLIN PLUMBING OF LONG BEACH
20032 State Rd
5.00(
5
)
Approved Pro
BENJAMIN FRANKLIN PLUMBING OF LONG BEACH
20032 State Rd
5.00(
5
)
Approved Pro
31 local quotes requested
14 years of experience

Veteran Owned, locally operated. Named as Top Plumbing Company 2024 by Forbes. 100% Service Guarantees. We take pride in doing what's right for you. Let us take a look at your quotes and get an honest 2nd opinion. Licensed and operating with integrity. READ BEFORE SELECTING OUR SERVICES: We do not install any faucets or owner provided water heaters or owner provided toilets.

Veteran Owned, locally operated. Named as Top Plumbing Company 2024 by Forbes. 100% Service Guarantees. We take pride in doing what's right for you. Let us take a look at your quotes and get an honest 2nd opinion. Licensed and operating with integrity. READ BEFORE SELECTING OUR SERVICES: We do not install any faucets or owner provided water heaters or owner provided toilets.


Avatar for Soo Hipp Plumbing And Drains
Soo Hipp Plumbing And Drains
3655 Torrance Blvd. Suite 300
4.68(
76
)
Approved Pro
Soo Hipp Plumbing And Drains
3655 Torrance Blvd. Suite 300
4.68(
76
)
Approved Pro
Customers say: Quick response
14 years of experience
Free onsite estimate

Experience the Soo Hipp Difference — Plumbing with Heart and Precision! For over 15 years, Soo Hipp Plumbing and Drains has proudly served the South Bay community with one mission: to raise the standard for what homeowners should expect from a plumber. We’re not just another contractor — we believe in service with a smile, the hippo style! Built on respect, integrity, and real communication, we show up on time, treat your home like our own, and get the job done right the first time — no excuses. Whether you need a quick repair, a major installation, or emergency help when you need it most, we're the team you can trust. Honest estimates. Exceptional service. Zero stress. Call us today for your free estimate at (310) 927-1141 — and experience plumbing done differently. Emergency services available 24/7!

"Very professional and they took time to explain our situation and then offer solutions. All work was completed on time."

Mark C on May 2023

Experience the Soo Hipp Difference — Plumbing with Heart and Precision! For over 15 years, Soo Hipp Plumbing and Drains has proudly served the South Bay community with one mission: to raise the standard for what homeowners should expect from a plumber. We’re not just another contractor — we believe in service with a smile, the hippo style! Built on respect, integrity, and real communication, we show up on time, treat your home like our own, and get the job done right the first time — no excuses. Whether you need a quick repair, a major installation, or emergency help when you need it most, we're the team you can trust. Honest estimates. Exceptional service. Zero stress. Call us today for your free estimate at (310) 927-1141 — and experience plumbing done differently. Emergency services available 24/7!

"Very professional and they took time to explain our situation and then offer solutions. All work was completed on time."

Mark C on May 2023


Avatar for Western Rooter & Plumbing
Western Rooter & Plumbing
136 E Santa Clara St
4.81(
157
)
Approved Pro
Western Rooter & Plumbing
136 E Santa Clara St
4.81(
157
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
625 local quotes requested

Call NOW: (626) 889-7990! Available 24/7 for all your plumbing needs! At the heart of our services is a commitment to comprehensive plumbing solutions - from water, sewer, to gas lines, we handle it all. Our expertise spans routine maintenance to urgent emergency repairs, ensuring your plumbing is always in top condition. Drain cleaning? We're on it with both traditional and hydro jetting techniques. But that's just the start. We offer water heater services, including both classic and cutting-edge tankless installations, repairs, and maintenance, ensuring your hot water flow is uninterrupted. Our approach to clean, safe water extends to installing water treatment systems, including softeners and filtration, for pure, drinkable water right from your tap. We're also proactive about the health of your plumbing and sewer lines, offering detailed inspections with our sewer scope technology. Many maintenance services come with complimentary camera inspections to extend your system's lifespan and pinpoint any issues early on. Gas lines and safety valves, especially emergency earthquake shutoffs, are within our expertise, along with certified under street repairs. And for those with septic systems, we provide thorough septic pumping services. No matter the challenge - water, sewer, or gas lines - we're fully equipped to tackle it. Plus, we're thrilled to extend our free travel zone, now covering the Victorville area, bringing our reliable services closer to you!

"After discovering a leak (probably in the slab) of hot water, we just decided to replace the entire plumbing piping in our 30 years old 2 story house with 3 bathrooms. The copper pipes were replaced by durable flexible plastic pipes and the project also included replacing the water heater. The crew- Manny, Mitch and Josh promised to finish the project in 3 days- and they sure did it. The GREAT TEAM, efficient and professional, worked non stop and communicated with me before taking each next step. They reconnected about 20 points (such as washing machine, dishwasher, new water heater, multiple faucets and 3 toilets) The price is a little steep but the quality of the job looks very good."

Stuart C on March 2018

Call NOW: (626) 889-7990! Available 24/7 for all your plumbing needs! At the heart of our services is a commitment to comprehensive plumbing solutions - from water, sewer, to gas lines, we handle it all. Our expertise spans routine maintenance to urgent emergency repairs, ensuring your plumbing is always in top condition. Drain cleaning? We're on it with both traditional and hydro jetting techniques. But that's just the start. We offer water heater services, including both classic and cutting-edge tankless installations, repairs, and maintenance, ensuring your hot water flow is uninterrupted. Our approach to clean, safe water extends to installing water treatment systems, including softeners and filtration, for pure, drinkable water right from your tap. We're also proactive about the health of your plumbing and sewer lines, offering detailed inspections with our sewer scope technology. Many maintenance services come with complimentary camera inspections to extend your system's lifespan and pinpoint any issues early on. Gas lines and safety valves, especially emergency earthquake shutoffs, are within our expertise, along with certified under street repairs. And for those with septic systems, we provide thorough septic pumping services. No matter the challenge - water, sewer, or gas lines - we're fully equipped to tackle it. Plus, we're thrilled to extend our free travel zone, now covering the Victorville area, bringing our reliable services closer to you!

"After discovering a leak (probably in the slab) of hot water, we just decided to replace the entire plumbing piping in our 30 years old 2 story house with 3 bathrooms. The copper pipes were replaced by durable flexible plastic pipes and the project also included replacing the water heater. The crew- Manny, Mitch and Josh promised to finish the project in 3 days- and they sure did it. The GREAT TEAM, efficient and professional, worked non stop and communicated with me before taking each next step. They reconnected about 20 points (such as washing machine, dishwasher, new water heater, multiple faucets and 3 toilets) The price is a little steep but the quality of the job looks very good."

Stuart C on March 2018


Avatar for Pure Water Filtration
Pure Water Filtration
38705 San Francisquito Canyon Rd.
New on HomeAdvisorNew on Angi
Approved Pro
Pure Water Filtration
38705 San Francisquito Canyon Rd.
New on AngiNew on HomeAdvisor
Approved Pro
219 local quotes requested
3 years of experience

With 50 years of combined experience, we at Pure Water Filtration pride ourselves on being the best in the industry. Our ability to design and install complex projects separates us from our competitors. We do everything from simple installs such as residential reverse osmosis to more complex commercial multi-unit apartment buildings or well water treatment. For pure, healthy water, we have a solution for any budget. We use American-made products, allowing us to offer the best warranties in the industry. All of our products meet NSF and ANSI standards. Pure Water Filtration has a close relationship with the California State Drinking Water Program and local testing laboratories. We guarantee you will be satisfied when choosing Pure Water Filtration as your go-to water treatment specialist.

With 50 years of combined experience, we at Pure Water Filtration pride ourselves on being the best in the industry. Our ability to design and install complex projects separates us from our competitors. We do everything from simple installs such as residential reverse osmosis to more complex commercial multi-unit apartment buildings or well water treatment. For pure, healthy water, we have a solution for any budget. We use American-made products, allowing us to offer the best warranties in the industry. All of our products meet NSF and ANSI standards. Pure Water Filtration has a close relationship with the California State Drinking Water Program and local testing laboratories. We guarantee you will be satisfied when choosing Pure Water Filtration as your go-to water treatment specialist.


PV Plumbing
24222 Park St
No reviews
PV Plumbing
24222 Park St
No reviews
33 years of experience

We will do a professional job in a timely manor.

We will do a professional job in a timely manor.


Eco Technology
No reviews
Eco Technology
No reviews
8 years of experience

ECO Technology is a provider of ecologically friendly technologies for homes and businesses. Specializing in Water Quality, Water Purification Systems, HVAC, Solar Energy and much more.

ECO Technology is a provider of ecologically friendly technologies for homes and businesses. Specializing in Water Quality, Water Purification Systems, HVAC, Solar Energy and much more.

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FAQs for water treatment & purification system installation and replacement projects in Los Angeles, CA

A whole-house water filtration system is ideal if you want all the water in your home to be filtered, improving water quality and protecting your plumbing. This system can enhance your home's value. If you only need filtered water for drinking or cooking, a point-of-use filter might be a suitable alternative. Each filtration option is designed to remove specific contaminants.

Maintaining your whole‑house water filtration system is essential for uninterrupted performance and clean water. The annual expense, which ranges between $50 and $300, covers filter replacements, complete system inspections, and any required repair work. Regular maintenance keeps the system operating at peak efficiency and guarantees the highest water quality for every home use.

Installing a whole‑house water filtration system is a streamlined process that a professional can complete in one day. Multistage systems require additional time to secure proper plumbing connections and calibrate the system accurately. In contrast, point‑of‑use filters are installed within a few hours, ensuring efficient and precise integration in your home.

Most whole-house filtration systems last 10 to 20 years with proper care. Reverse osmosis units typically serve 10 to 15 years, while water distillers can exceed two decades. Lifespan depends on build quality, water chemistry, and whether filters, lamps, or membranes are changed on schedule. Regular professional inspections help you catch minor issues before they shorten the system’s life. Budget for planned component replacements to reach the upper end of that range.

Fast clogging usually points to high sediment levels, heavy water use, or both. When more dirt and minerals flow through the system, filters load up sooner and performance drops. Schedule a water test to confirm what’s in your supply, add a sediment pre-filter if needed, and follow the manufacturer’s replacement timeline to keep water pressure and quality where they belong.

The Los Angeles, CA homeowners’ guide to water treatment & purification system installations and replacements
From average costs to expert advice, get all the answers you need to get your job done.
water purification filter system in home
Jun 24, 2025
Jun 24, 2025
The cost of installing a whole-house water filtration system depends on the type and number of filters you choose. Use this guide to budget for your project.
reverse osmosis water filtration system
Jun 17, 2025
Jun 17, 2025
Budget for reverse osmosis water filter costs based on factors such as system type, efficiency, number of stages, labor, add-on features, and more.
A small girl washing her hands in the bathroom sink
Mar 25, 2025
Mar 25, 2025
Use this guide to budget for water softener repair costs based on factors such as water treatment system type, replacement parts, professional labor, and more.
A woman holding glass under faucet in kitchen
Feb 12, 2025
Feb 12, 2025
If you’re planning to install a water softener, consider budgeting based on capacity, type of system, tank size, and more.
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