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Water treatment & purification system installers and replacers in Los Angeles

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
42 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 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
144 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 LA Purification Products, Inc.
LA Purification Products, Inc.
9928 Flower St Ste 200
4.76(
85
)
Approved Pro
LA Purification Products, Inc.
9928 Flower St Ste 200
4.76(
85
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
31 years of experience

LA Purification Products, Inc., with 25 years experience, offers the highest quality, most efficient and strongest warranted Water Treatment Systems & Drinking Systems for residential consumers

"Customer friendly and professional, LA Purification Products installed our under sink, reverse osmosis unit in a careful and efficient way. They also connected the purifier to our refrigerator ice maker for no extra charge. Five star service all the way."

Nate S on March 2023

LA Purification Products, Inc., with 25 years experience, offers the highest quality, most efficient and strongest warranted Water Treatment Systems & Drinking Systems for residential consumers

"Customer friendly and professional, LA Purification Products installed our under sink, reverse osmosis unit in a careful and efficient way. They also connected the purifier to our refrigerator ice maker for no extra charge. Five star service all the way."

Nate S on March 2023


Avatar for Leon Plumbing
Leon Plumbing
2409 Janet Lee Drive
4.92(
59
)
Approved Pro
Leon Plumbing
2409 Janet Lee Drive
4.92(
59
)
Approved Pro
Customers say: True professional
16 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.

"Very professional, dedicated knowledgeable people and the work completed on time. Really like to recommend to anyone who needs plumbing work."

Paul B on April 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.

"Very professional, dedicated knowledgeable people and the work completed on time. Really like to recommend to anyone who needs plumbing work."

Paul B on April 2025


Pure Water Filtration
38705 San Francisquito Canyon Rd
5.00(
6
)
Approved Pro
Pure Water Filtration
38705 San Francisquito Canyon Rd
5.00(
6
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
21 local quotes requested

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Brandon Was Amazing Treated Us Like Family After He Educated Us And told us about a really good replacement System On Amazon Very Knowledgeable Vey Honest And Fabulous Customer service and workmanship Very reasonable pricing and could have sold us a system but didn't told us what to order for our budget on Amazon and he was right we replaced an old overpriced Rainsoft system with a 5 stage very nice system then he professionally installed it and told us our Whole House Rainsoft Water Softener system was working fine again could have told us we needed a new one he's honest and a true gentleman and businessman 5 huge stars Thank You Brandon!!"

Rick H on June 2024

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Brandon Was Amazing Treated Us Like Family After He Educated Us And told us about a really good replacement System On Amazon Very Knowledgeable Vey Honest And Fabulous Customer service and workmanship Very reasonable pricing and could have sold us a system but didn't told us what to order for our budget on Amazon and he was right we replaced an old overpriced Rainsoft system with a 5 stage very nice system then he professionally installed it and told us our Whole House Rainsoft Water Softener system was working fine again could have told us we needed a new one he's honest and a true gentleman and businessman 5 huge stars Thank You Brandon!!"

Rick H on June 2024


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
566 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!

"Ryan was perfectly on-time and was a plumbing scholar and a gentleman. We had a simple drain replacement under a new sink. Going to Western saved me at least another day of trying to figure out proper parts and doing the install myself, and it also saved my wife's ears from hearing my salty language."

Gary v on September 2024

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!

"Ryan was perfectly on-time and was a plumbing scholar and a gentleman. We had a simple drain replacement under a new sink. Going to Western saved me at least another day of trying to figure out proper parts and doing the install myself, and it also saved my wife's ears from hearing my salty language."

Gary v on September 2024


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
261 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.


Avatar for Morales rooter & Plumbing INC
Morales rooter & Plumbing INC
6145 Aldama Street
5.00(
5
)
Approved Pro
Morales rooter & Plumbing INC
6145 Aldama Street
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
826 local quotes requested

You can also call us today: (323) 356-4811 Welcome to Morales Rooter & Plumbing INC. We are a small owned family business over 15 years of unwavering dedication and expertise to every pipe, every drain, and every customer in the Los Angeles CA areas. Our journey began with a simple mission to provide unparalleled plumbing service that not only solve immediate issues but also prevent future problems. over the years we expanded our services, honored our skills, and embraced the latest in plumbing technology, all while staying true to our commitment to customer satisfaction. We do it all! :Water installation :Pipping replacement :Drainage installation :Main/sewer lines :Maintenance and repairs :Leak repairs :water heaters :camera inspection :jetters/linears :etc.

"I had my toilet backing up and I had Morales Rooter & Plumbing come out and they took care of the issue right away. They were well equipped and they cleared it with there big machine. They also used there camera and I got to see what was the issue! I would of never known I had roots growing in my pipe. Seeing it for myself through the camera was such a plus that I proceeded to get that fixed. They fixed that issue and now I have no worries my toilet getting backed up. Very satisfied with the work high recommended Morales Rooter & Plumbing!"

Martha v on January 2025

You can also call us today: (323) 356-4811 Welcome to Morales Rooter & Plumbing INC. We are a small owned family business over 15 years of unwavering dedication and expertise to every pipe, every drain, and every customer in the Los Angeles CA areas. Our journey began with a simple mission to provide unparalleled plumbing service that not only solve immediate issues but also prevent future problems. over the years we expanded our services, honored our skills, and embraced the latest in plumbing technology, all while staying true to our commitment to customer satisfaction. We do it all! :Water installation :Pipping replacement :Drainage installation :Main/sewer lines :Maintenance and repairs :Leak repairs :water heaters :camera inspection :jetters/linears :etc.

"I had my toilet backing up and I had Morales Rooter & Plumbing come out and they took care of the issue right away. They were well equipped and they cleared it with there big machine. They also used there camera and I got to see what was the issue! I would of never known I had roots growing in my pipe. Seeing it for myself through the camera was such a plus that I proceeded to get that fixed. They fixed that issue and now I have no worries my toilet getting backed up. Very satisfied with the work high recommended Morales Rooter & Plumbing!"

Martha v on January 2025


Avatar for Rooter Care and Plumbing
Rooter Care and Plumbing
923 McDonald Ave
5.00(
9
)
Approved Pro
Rooter Care and Plumbing
923 McDonald Ave
5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1363 local quotes requested

Rooter care and plumbing is a all in one company serving the South Bay Area catering to all plumbing needs which includes service, repair and replacement of all sewer, water and gas systems including water heater and tankless service, repair and replacements, fixtures installations and all drain cleaning services. Offering free estimates on all jobs small or big. Rooter care and plumbing “Proper care for your plumbing needs”

"The toilet is properly functioning. Thus, it went well. Christian was also very amicable and explained the issues well."

Randal M on July 2024

Rooter care and plumbing is a all in one company serving the South Bay Area catering to all plumbing needs which includes service, repair and replacement of all sewer, water and gas systems including water heater and tankless service, repair and replacements, fixtures installations and all drain cleaning services. Offering free estimates on all jobs small or big. Rooter care and plumbing “Proper care for your plumbing needs”

"The toilet is properly functioning. Thus, it went well. Christian was also very amicable and explained the issues well."

Randal M on July 2024


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.

...
Showing 1-10 of 377

Water treatment & purification system installations and replacements FAQs

In a reverse osmosis system, water from your main line—or from a designated faucet—is pushed through a semipermeable membrane under pressure. The membrane’s microscopic pores trap dissolved solids, heavy metals, and other contaminants, while clean water passes into a storage tank or straight to the tap. The leftover concentrated water simply drains away. The result is clear, great‑tasting water delivered right where you need it.

A plumber can set up a point‑of‑use unit in one to two hours. A whole‑house system is more involved and often takes one to two days because it ties into the main supply line and may need extra plumbing. During installation, the pro mounts the unit, connects the pipes, checks for leaks, and tests performance so you’re ready to pour a glass as soon as they leave.

Reverse osmosis removes dissolved solids, heavy metals, and many microorganisms, giving you water that tastes cleaner and protects your family. Softer water also helps appliances, faucets, and ice makers last longer. Because you’re filling reusable bottles instead of buying single‑use plastic, most homeowners save money and cut waste. In short, you get better‑tasting water, longer‑lasting appliances, and a smaller environmental footprint from one straightforward system.

The 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.
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Budget for reverse osmosis water filter costs based on factors such as system type, efficiency, number of stages, labor, add-on features, and more.
water purification filter system in home
Apr 17, 2025
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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.
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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