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Top-Rated Water treatment pros in Foothill Ranch - Updated Nov 2026

Avatar for So Cal Water Systems
So Cal Water Systems
4.6(
183
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Foothill Ranch, CA and surrounding areas

Approved

In business since 1993

Free estimates

Credit card accepted

"The installation technician, Danny, showed up on time and was extremely professional and friendly. He installed a reverse osmosis system under the kitchen sink with a brushed nickel faucet beautifully mounted on our granite counter top, as well as a whole house water filter and softening system in the garage. His workmanship was terrific and the system works great, we couldn't be happier!"
OUR WORK
OUR WORK
OUR WORK
OUR WORK
OUR WORK

+1

Response time1 day
10 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for WATER HEATER SOS
WATER HEATER SOS
5.0(
17
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Foothill Ranch, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"I have a tankless water heater that was giving an error code and i had no hot water! The tech that came out was very nice and knowledgeable. Im glad to report i now have hot water again. As a side note I talked with the tech about water treatment options and a RO system and as long as my husband agrees I will be having them install both items!!"
Phyn Install
Phyn Install
Water Heater
Water Heater
Response time8 hrs
Response rate98%
1 neighbors recently requested a quote
Avatar for Pristine Plumbing, Inc.
Pristine Plumbing, Inc.
4.1(
57
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Foothill Ranch, CA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"After discovering late on a Fri. that I had an underground leak in the main water supply line right by the shut-off valve in front of my house, I reached out to three different plumbers thru Angie. Pristine Plumbing was available to come by at 4 PM. They assessed the situation and gave me a quote of $900. I probably could have shopped around and gotten a much better rate, but the water was significant enough that I chose to have them do the work. The technician was very friendly and professional, willing to answer any question I asked. We thought the problem was fixed and he left at around 7 p.m., and about 5 minutes later, the connection blew out. I called the dispatch and they sent him right back. He spent until about 10 p.m. working to fix the problem. We left the water off overnight to make sure the seal was properly cured, and he came back at 7 a.m. Sat. to ensure we had a good seal. We turned the water back on and everything seemed to be fixed. The one cautionary note is that the technician offered to add a T joint and above ground shut-off valve connected to our landscape irrigation system. I did not ask and he did not tell me there would be an incremental charge of $300 or so, which he only shared at the time of issuing the invoice. I suggested that was not appropriate, and he applied a 10% discount against the entire invoice."
Doing It Right!
Drain Repair
Garrett
Gas Installation
Tankless Heater

+6

Response time7 hrs
103 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Triton Air & Plumbing
Triton Air & Plumbing
5.0(
5
)
Water Treatment & Purification System - Repair or Service

Serving Foothill Ranch, CA and surrounding areas

Approved

In business since 2001

Credit card accepted

Triton Air & Plumbing is a trusted provider of professional heating, air conditioning, and plumbing services throughout Orange County, California. We specialize in HVAC repairs, installations, maintenance, plumbing repairs, drain cleaning, water heaters, and indoor air quality solutions. Our experienced technicians are committed to delivering reliable service, quality workmanship, and exceptional customer care. Whether you need an emergency repair or a complete system replacement, Triton Air & Plumbing is here to keep your home comfortable year-round.

1 neighbors recently requested a quote
Goettl Plumbing - Lake Forest
New to Angi
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Foothill Ranch, CA and surrounding areas

Approved

In business since 1939

Free estimates

Emergency services offered

Established in 1939, we do residential HVAC and plumbing the right way, not the easy way. At Goettl, we are total home comfort solution providers, enhancing the quality of life in the communities we serve. As Sadie Certified professionals, equipped with cutting-edge tools and technology, we deliver a superior customer experience, one home at a time.

HVAC/Plumbing
HVAC/Plumbing
HVAC/Plumbing
HVAC/Plumbing
HVAC/Plumbing

+7

Avatar for Davidson Construction & Plumbing, Inc.
Davidson Construction & Plumbing, Inc.
0.8(
2
)
Water Treatment & Purification System - Install or Replace

Serving Foothill Ranch, CA and surrounding areas

Approved

In business since 2014

Free estimates

Offers commercial services

Our company is a full-service construction firm specializing in general contracting, plumbing, and electrical services throughout Orange County. With over 25 years of industry experience, we provide comprehensive solutions for both residential and commercial projects, including new construction and remodeling. Whether you need expert plumbing or electrical installations, or full general contracting services, we are dedicated to delivering exceptional results that stand the test of time.

Small Kitchen Remodel
Large Kitchen Remodel
New Electrical Service
Response time5 hrs
3 neighbors recently requested a quote
...
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