The Industry Leader in Pipe Corrosion and Pinhole Leak Prevention

Providing nationwide service for corrosion and pinhole leaks with our industry leading phosphate technology solution.

Illustration of a wavy line with a blue border on a white and black background.

Where We Service

W.C. Service Company’s licensed and professional water treatment technicians provide our Corrosion Control Water Treatment Service nationwide to apartments, hotels, HOAs, condos, and commercial buildings. We provide all maintenance and upkeep of the water treatment system and maintain ownership at all times.

Simple line drawing of a house with two stories, a garage, and two trees on either side.

Illustration of two high-rise buildings with rectangular windows, one with a flat roof and the other with a tower-like design.

Vector illustration of a multi-story office building with a grid of windows and entrance doors, flanked by two angled structures.

Apartments & Hotels

HOAs & Condos

Commercial Buildings

Who We Are

We are the industry leader in performance, innovation, and technology in providing solutions for corrosion and pinhole leaks in plumbing systems. All our corrosion inhibitors and water treatment equipment are NSF Standard 60 & 61 Approved for potable water supplies. We are members of all major water treatment associations.

Blue droplet shape with text "1000+ Total Customers" in white.

Blue water droplet shape with text '50+ Years Experience'

Blue water drop icon with text "30+ States Serviced"

Rusty and corroded metal pipes with leaking joint.

Corroded copper pipe with pinhole leak and water stream.

Corrosion & Pinhole Leaks in Plumbing Systems

The corrosion of metallic piping is usually the result of the quality of the water in the pipe and conditions in the pipe wall itself. Corrosion and pinhole leaks cause extensive, costly damage. Costs can come in the form of toxic mold growth, intensive demolition to locate leak sources, and tenant and customer lodging expenses.

Get Help Now →

Old industrial pipes with insulation and metal clamps in a building.

The Costly Damage of Corrosion & Pinhole Leaks

Corrosion and pinhole leaks in a plumbing system are common occurrences. The damage they cause can be one of the costliest and most inconvenient problems your building can incur.

Tell Me More →

Our Proven Solution

Phosphate Water Treatment

Phosphate water treatment inhibitors have been used for over 75 years to help control corrosion and pinhole leaks in plumbing systems. When added to a building’s water supply, phosphates will lay down a protective micro-thin coating on the interior of the pipe wall.

If a specific residual of phosphate is continuously maintained in the water supply, the coating remains firmly attached to the pipe wall. This protective coating helps to control corrosion and pinhole leaks throughout the entire plumbing network.

Close-up of a cross-section of a corroded metal pipe.

Close-up of a copper pipe with internal corrosion visible

Image of a clear pipe wall after successful phosphate water treatment.

Close-up of weathered rusty metal surface with peeling paint

Two blue water droplet emojis on a transparent background.

Phosphate Technology

Many phosphate blends have been formulated for controlling corrosion and pinhole leaks. The proper technology will help reduce plumbing and maintenance costs by over 75%.

Illustration of a blue water droplet with a black outline on a white background.

Learn More →

Safety

The phosphate inhibitors used by W.C. Service Company are food-grade compounds that can safely be added to drinking water and can even reduce levels of lead and copper.

Health & Safety Data →

What Our Customers Say

Hotel

“As the Area Director of Engineering Operations-America West for Hilton Worldwide, I used and recommended the water treatment program provided by W.C Service at many of my 100+ hotels. The water treatment system was able to save our hotels money in water costs, shutdowns, and labor costs by stopping the corrosion and pinhole leaks in the domestic hot water plumbing systems.”
- Jim Hart, Retired Area Engineering Director
Condo

“In my capacity as a Property Manager for over 1000 condominium units in a portfolio of fifteen properties, I cannot stress enough the importance of implementing a water treatment system for control of copper pipe pinhole leaks. W.C. Services has installed water treatment systems in many of the properties that we work with; all with very good results. The pinhole leaks practically disappeared resulting in reduced costs for plumbing and consequential damages expenses, as well as improvement to quality of life to residents to not have to deal with unexpected problems. W.C. Services is very easy to work with and super responsive. I would heartily encourage anyone to seriously consider this system for their property.”
- Pya Darzentas, Property Manager
Homeowner Association

“I have been the General Manager of Le Parc Homeowners Association in Century City consisting of 176 luxury condominium units contained in 15 Chateaux for over 30 years. Many years ago, the property was plagued with almost daily pinhole leaks in the horizontal copper tubing hanging from the ceilings of the subterrain garages. Pinhole leaks were starting to occur in the vertical lines which was a big concern that prompted our search for a solution. We happened to find W.C. Service. They installed their water treatment system immediately, and I mean immediately, the pinhole leaks were reduced to just a couple months the first year, maybe 1 or 2 in the next few years and then none for many,many years. It’s really a ‘no brainer’ type of decision contracting with W.C. Service. The value ($$$$$) they provide is truly remarkable. I am a big fan and believer in W.C. Service and what they accomplish here.”
- John Burton, General Manager
Condo

"As the General Manager of a prominent condominium complex in Newport Beach, CA, I've seen firsthand the challenges that come with constant plumbing issues—especially pinhole leaks in our hot water lines. These leaks were not only expensive to repair but also required remodeling from the water damage. Over a year ago, we decided to partner with W.C. Service Company to install their water treatment equipment on our hot water system. Since then, we haven’t had a single leak. Their solution has truly made a difference, and I wholeheartedly recommend their water treatment services to anyone dealing with similar issues."
-Fatima Lahouty, General Manager