Top-rated water treatment & purification system repair or service pros.

Get matched with top water treatment & purification system repair or service pros in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Water treatment & purification system repair or service pros in Discovery Bay

Avatar for A-1 Water Quality

A-1 Water Quality

1950 E Pacheco Blvd
4.93(
80
)
Approved Pro

A-1 Water Quality

1950 E Pacheco Blvd
4.93(
80
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
23 local quotes requested

At A-1 Water Quality, we believe in providing the ultimate experience for our customers. We strive to exceed your expectations by providing incredible customer service, quality work, responsiveness and competitive pricing. We install, service and repair all makes and models of water purification systems. We look forward to serving you. Give us a call today for a free estimate!

"Did fantastic job"

Michael L on August 2025

At A-1 Water Quality, we believe in providing the ultimate experience for our customers. We strive to exceed your expectations by providing incredible customer service, quality work, responsiveness and competitive pricing. We install, service and repair all makes and models of water purification systems. We look forward to serving you. Give us a call today for a free estimate!

"Did fantastic job"

Michael L on August 2025


Avatar for Oak Plumbing

Oak Plumbing

3852 Industrial Way
4.63(
467
)
Approved Pro

Oak Plumbing

3852 Industrial Way
4.63(
467
)
Approved Pro
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
101 local quotes requested

Oak Plumbing is 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. Our customer's safety is extremely important, which is why all of our technicians are fully trained, background checked, and drug tested.

"Malik was very punctual, polite and went into detail about the work, what it will require and estimate time on how long the job will take. I am happy with the work and for sure hired Oak Plumbing for any future work, highly recommended them."

Marco G on April 2025

Oak Plumbing is 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. Our customer's safety is extremely important, which is why all of our technicians are fully trained, background checked, and drug tested.

"Malik was very punctual, polite and went into detail about the work, what it will require and estimate time on how long the job will take. I am happy with the work and for sure hired Oak Plumbing for any future work, highly recommended them."

Marco G on April 2025


Avatar for AAA Water Systems

AAA Water Systems

4050 Pike Lane
4.84(
55
)
Approved Pro

AAA Water Systems

4050 Pike Lane
4.84(
55
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
222 local quotes requested

Back in the 1980's a small team of water professionals got together in Northern California with one goal in mind; to improve lives through better water. The target was not only to help families, but businesses alike! By 1993, we came to realize that there was only one manufacturer that would allow us to achieve this goal while also exceeding our customers' extraordinary expectations. This WAS, IS and ALWAYS will be Kinetico Water Systems. Today AAA Water Systems, Inc. is able to exclusively offer Kinetico; the world's best product line of non-electric water purification, filtration and softening systems. Now with over 40 years of water treatment expertise, we are a strong group of over 40 team members operating across the greater Northern California area.

"The water here in Manteca is terrible. It smells, tastes disgusting and leaves your skin dry and ashy. I research water softeners/purifiers online and with my neighbors and then contacted AAA Water Systems since they use the Kinetico water systems. I had an appointment with Damian Fernandez and he was very thorough in his explanations of the system, how it works, maintanence, future costs, just everything I needed to know to make an informed decision. And it was the best decision ! I know have purified water right at my sink from the reverse osmosis sytem and soft smell free water from all the taps. No more hard water deposits, no ashy skin and coarse hair. No more bottled water to drink or cook with. The installers were wonderful...prompt and professional. Everything spotless when they were done. They carefully explained and showed me how to use, maintain, and just in case, shut the system off. They also provide little measuring scoops for the proper amount of soap to use in the washing machine and the dishwasher."

TERRILYNN M on September 2021

Back in the 1980's a small team of water professionals got together in Northern California with one goal in mind; to improve lives through better water. The target was not only to help families, but businesses alike! By 1993, we came to realize that there was only one manufacturer that would allow us to achieve this goal while also exceeding our customers' extraordinary expectations. This WAS, IS and ALWAYS will be Kinetico Water Systems. Today AAA Water Systems, Inc. is able to exclusively offer Kinetico; the world's best product line of non-electric water purification, filtration and softening systems. Now with over 40 years of water treatment expertise, we are a strong group of over 40 team members operating across the greater Northern California area.

"The water here in Manteca is terrible. It smells, tastes disgusting and leaves your skin dry and ashy. I research water softeners/purifiers online and with my neighbors and then contacted AAA Water Systems since they use the Kinetico water systems. I had an appointment with Damian Fernandez and he was very thorough in his explanations of the system, how it works, maintanence, future costs, just everything I needed to know to make an informed decision. And it was the best decision ! I know have purified water right at my sink from the reverse osmosis sytem and soft smell free water from all the taps. No more hard water deposits, no ashy skin and coarse hair. No more bottled water to drink or cook with. The installers were wonderful...prompt and professional. Everything spotless when they were done. They carefully explained and showed me how to use, maintain, and just in case, shut the system off. They also provide little measuring scoops for the proper amount of soap to use in the washing machine and the dishwasher."

TERRILYNN M on September 2021


Performance Plus Plumbing LLC

4435 1st Street
5.00(
5
)

Performance Plus Plumbing LLC

4435 1st Street
5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Since 1994, Performance Plus Plumbing,LLC has been servicing residential and commercial customers in the Northern California Bay Area and surrounding areas. We are a family owned business and you will get an experienced plumber on every single call that comes into our office. We are licensed with an impeccable record, have excellent troubleshooting skills, and because we know what we’re doing, will promptly resolve your problem because we are so knowledgeable compared to our competition. We know how to diagnose and troubleshoot even the most difficult of jobs, and can offer solutions to fix it if possible, before replacing, so that in itself will save you money. Because we can work faster than our competition, on jobs that are billed hourly, you will also save money there. We are factory trained and are the representative service techs in our area for ALL water heater brands including but not limited to AO Smith, State, Reliance, Rheem, American, Bradford White, Navien, Rinnai, Takagi, and many more. We are also the area reps for major manufacturing brands of faucets, toilets, sink parts, and any plumbing related issue you have. We not only do plumbing but also sewer and drain cleaning, hydrojetting, in-pipe video inspections, leak locating and pipe locating service. We are also called out by other plumbing companies when they can’t resolve a problem, as well as by our suppliers. Word of mouth is how we get most referrals. The best part is, that our pricing many times is lower than our competition and we have so much more to offer! What are you waiting for? Call us Now to schedule your service call. No job too small!

"Excellent service. Cliff was able to answer all of the questions regarding pricing/installation."

Ed L on February 2021

Since 1994, Performance Plus Plumbing,LLC has been servicing residential and commercial customers in the Northern California Bay Area and surrounding areas. We are a family owned business and you will get an experienced plumber on every single call that comes into our office. We are licensed with an impeccable record, have excellent troubleshooting skills, and because we know what we’re doing, will promptly resolve your problem because we are so knowledgeable compared to our competition. We know how to diagnose and troubleshoot even the most difficult of jobs, and can offer solutions to fix it if possible, before replacing, so that in itself will save you money. Because we can work faster than our competition, on jobs that are billed hourly, you will also save money there. We are factory trained and are the representative service techs in our area for ALL water heater brands including but not limited to AO Smith, State, Reliance, Rheem, American, Bradford White, Navien, Rinnai, Takagi, and many more. We are also the area reps for major manufacturing brands of faucets, toilets, sink parts, and any plumbing related issue you have. We not only do plumbing but also sewer and drain cleaning, hydrojetting, in-pipe video inspections, leak locating and pipe locating service. We are also called out by other plumbing companies when they can’t resolve a problem, as well as by our suppliers. Word of mouth is how we get most referrals. The best part is, that our pricing many times is lower than our competition and we have so much more to offer! What are you waiting for? Call us Now to schedule your service call. No job too small!

"Excellent service. Cliff was able to answer all of the questions regarding pricing/installation."

Ed L on February 2021


Robert Duncan Construction

Cooper
5.00(
1
)

Robert Duncan Construction

Cooper
5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

General Contractor , Build and Design, Consulting, Commercial Building Maintenance, All kitchen remodels $500 off and $300 Off for Complete Bathroom remodels the month of September through December. 20% Off complete Remodel of Entire House. $50 Dollars of any Home Improvement, Hot water Heater, Tankless water heater, Garbage Disposal,Dishwasher ,Windows

General Contractor , Build and Design, Consulting, Commercial Building Maintenance, All kitchen remodels $500 off and $300 Off for Complete Bathroom remodels the month of September through December. 20% Off complete Remodel of Entire House. $50 Dollars of any Home Improvement, Hot water Heater, Tankless water heater, Garbage Disposal,Dishwasher ,Windows


Independent Plumbing

5260 Laurel Dr
4.95(
118
)

Independent Plumbing

5260 Laurel Dr
4.95(
118
)
Customers say: True professional
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers

2-3 emplooyees. Sub contract all excavation, concrete and asphalt removal and replacement. Most jobs bid by the job not by the hour.

2-3 emplooyees. Sub contract all excavation, concrete and asphalt removal and replacement. Most jobs bid by the job not by the hour.


Service Pros Plumbers

126 Railroad Ave
4.90(
10
)

Service Pros Plumbers

126 Railroad Ave
4.90(
10
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Service Pros Plumbers is a local family-owned and operated plumbing company based in Antioch, CA. Plumbers at Service Pros have been providing quality plumbing services to both residential and commercial customers in the Bay area for over 25 years. At Service Pros Plumbers, we are committed to resolving any plumbing challenge you have quickly and effectively so you can have peace of mind. Our highly skilled plumbing technicians have the training, knowledge and experience to get the job done to your satisfaction.

"Very well indeed"

Irving A on April 2024

Service Pros Plumbers is a local family-owned and operated plumbing company based in Antioch, CA. Plumbers at Service Pros have been providing quality plumbing services to both residential and commercial customers in the Bay area for over 25 years. At Service Pros Plumbers, we are committed to resolving any plumbing challenge you have quickly and effectively so you can have peace of mind. Our highly skilled plumbing technicians have the training, knowledge and experience to get the job done to your satisfaction.

"Very well indeed"

Irving A on April 2024


Villanueva Jr. Electrical & Construction Services

PO BOX 31192
No reviews

Villanueva Jr. Electrical & Construction Services

PO BOX 31192
No reviews
20 years of experience

Our Company is Family Owned and oriented towards the personal service and quality craftsmanship. We have been in business for five years treating our customers with respect, responsability and loyalty. Providing the services they need... If you need it fix, we are here to offer our helping hand; we'll fix it for you or help you find that light at the end of the tunel... We are honest hard working people, we are here to serve you, and do it right!.

Our Company is Family Owned and oriented towards the personal service and quality craftsmanship. We have been in business for five years treating our customers with respect, responsability and loyalty. Providing the services they need... If you need it fix, we are here to offer our helping hand; we'll fix it for you or help you find that light at the end of the tunel... We are honest hard working people, we are here to serve you, and do it right!.


QUALITY PLUMBING

34972 Newark Blvd
5.00(
9
)

QUALITY PLUMBING

34972 Newark Blvd
5.00(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We provide full service plumbing.Copper repipeing,waters heaters,gas lines,water lines,sewer lines,sinks and toilets,plumbing fixtures,garbabe disposals,water filters,and water softners.

"I had another plumber come out and said he'd need to remove the entire bathtub and refused to look at it further. Andre came out and knew exactly what to do; he was courteous, punctual and most of all he got me going for an extremely reasonable price in about an hour. I've been draining my tub with a bucket for three weeks; now I can finally take a shower again (I guess you can say this was on my bucket list!). I can't praise Andre and Quality Plumbing highly enough! He's got a big thumbs up from me :-)!"

Bill B on February 2021

We provide full service plumbing.Copper repipeing,waters heaters,gas lines,water lines,sewer lines,sinks and toilets,plumbing fixtures,garbabe disposals,water filters,and water softners.

"I had another plumber come out and said he'd need to remove the entire bathtub and refused to look at it further. Andre came out and knew exactly what to do; he was courteous, punctual and most of all he got me going for an extremely reasonable price in about an hour. I've been draining my tub with a bucket for three weeks; now I can finally take a shower again (I guess you can say this was on my bucket list!). I can't praise Andre and Quality Plumbing highly enough! He's got a big thumbs up from me :-)!"

Bill B on February 2021


Itron Inc

1111 Broadway
No reviews

Itron Inc

1111 Broadway
No reviews
...
Showing 1-10 of 100
The Discovery Bay, CA homeowners’ guide to water treatment & purification system repair or services
From average costs to expert advice, get all the answers you need to get your job done.
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.
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.
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.
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.