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Expert Plumbing Services

Oconomowoc, Hartland & Delafield, WI

FREE, Next-Day Estimates

Certified Technicians

Over 100 Years of Experience

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Expert Plumbing Solutions Since 1927

For nearly a century, Sterling Mainz & Sons Plumbing & Pumps, Inc has been the trusted name in plumbing services for Oconomowoc and the surrounding communities. As a proud, family-owned business established in 1927, we bring the strength of three generations of plumbing expertise to every project we undertake. With over 100 years of combined experience, our team of certified technicians is equipped to handle a full spectrum of plumbing needs—from routine maintenance to complex installations and system upgrades.

Whether it’s a new water heater, a well pump system, or a custom water treatment solution, we deliver reliable, high-quality service with a personal touch. We're proud to serve our community with the knowledge, skill, and dedication that have been our hallmarks for decades. Our commitment to excellence is evident in our advanced training and certifications from industry leaders like A. O. Smith and Water-Right. Ready to experience the excellency of our team? Give us a call today to learn what we can do for you!

Unparalleled Expertise and Customer-Centric Service

Unparalleled Expertise and Service

FREE, Next-Day Estimates

Certified Technicians

Over 100 Years of Experience

Locally and Family-Owned

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Founded in 1927

A plumber is fixing a sink in a bathroom.

Water Heater Installations

and Repair Services

Our certified technicians specialize in water heater installations and repairs, ensuring your home has a reliable source of hot water. We work with various types and brands of water heaters, providing advice on the most efficient and cost-effective solutions for your needs.

Water Softener

Installations

As certified technicians for Capitol, Water-Right and Water-Right Softeners, we offer professional water softener installations to improve your water quality. Our team will assess your water hardness and recommend the ideal system to protect your plumbing and enhance your water.

Drain Cleaning and

Inspection Services

We provide thorough drain cleaning services and detailed inspections to prevent clogs and maintain the health of your plumbing system. Our advanced equipment allows us to identify and address issues before they become major problems, saving you time and money.

Sewer Cleaning and

Inspection Services

Our sewer cleaning and inspection services use state-of-the-art technology to diagnose and resolve sewer line issues. We offer solutions to keep your sewer system functioning efficiently, preventing backups and protecting your property from potential damage.

Sump Pump Installations

and Maintenance

Protect your basement from flooding with our sump pump installations and maintenance services. We ensure your sump pump is properly installed and regularly maintained to provide reliable protection against water damage during heavy rains or snowmelt.

Kitchen and Bathroom

Plumbing Services

From faucet replacements to complete custom plumbing, our team handles all aspects of kitchen and bathroom plumbing. We work efficiently to minimize disruption to your daily routine while delivering high-quality results that enhance your living space.

Water Line Repairs

Our team of experienced plumbers is equipped to handle water line repairs of all sizes. We use advanced diagnostic tools to locate leaks and damage, providing you with efficient repairs that restore your water supply with minimal disruption to your property.

Gas Line Repairs

Safety is our top priority when it comes to gas line repairs. Our certified technicians are trained to detect and repair gas leaks promptly, ensuring the security of your home and family. We adhere to strict safety protocols and local regulations in all our gas line work.

Well Pump Services

As specialists in well pump services, we offer comprehensive solutions for installation, maintenance, and repairs. Our team's expertise ensures your well pump system operates efficiently, providing your home with the reliable water supply it deserves.

Why Choose Sterling Mainz & Sons Plumbing & Pumps, Inc?


When it comes to plumbing, you deserve a company that is reliable, professional, and experienced. Sterling Mainz & Sons Plumbing & Pumps, Inc offers all that and more. As trusted plumbers in Delafield, WI, we have earned a reputation for delivering top-notch plumbing solutions that prioritize both quality and customer satisfaction. Our team of plumbers in Hartland, WI is dedicated to providing timely and efficient service, ensuring that every job is completed to the highest standards.


Our Commitment to Quality and Customer Satisfaction


At Sterling Mainz & Sons Plumbing & Pumps, Inc, we believe that our work is only as good as the satisfaction of our customers. We don’t just want to fix your plumbing issue – we want to build a relationship based on trust and excellence. That’s why our plumbers in Hartland, WI always go above and beyond to ensure that our work meets your expectations. From the moment you reach out to us, we’ll make sure to provide transparent communication and high-quality service that’s tailored to your specific needs. Whether it’s routine maintenance or an urgent repair, we’re here to help every step of the way.


Comprehensive Plumbing Services for Homes and Businesses


Our team of expert plumbers in Delafield, WI are well-equipped to handle all types of plumbing needs. From residential to commercial services, we offer a wide range of solutions. Whether you need help with a leaky faucet or a full-scale plumbing installation, we have the skills to deliver exceptional results.


Our Process: How We Ensure a Smooth Plumbing Experience


At Sterling Mainz & Sons Plumbing & Pumps, Inc, our plumbers in Hartland, WI have perfected our process to ensure your plumbing needs are addressed with care and precision. Here’s how we make sure every job goes smoothly:


Step 1 – Initial Consultation and Inspection


When you contact us, our first step is to listen to your concerns and perform a thorough inspection of your plumbing system. Our team of plumbers in Hartland, WI, identifies the root cause of the issue, explains our findings, and discusses the best course of action. Our goal is to ensure that we fully understand your needs and provide the most efficient solution.


Step 2 – Transparent, Honest Pricing


Before any work begins, our plumbers in Delafield, WI provide you with a clear and upfront estimate. You won’t find any hidden fees or surprise charges with Sterling Mainz & Sons Plumbing & Pumps, Inc. Our pricing is fair and competitive, ensuring that you get the best value for your investment.


Step 3 – Efficient and Professional Service


Once we’ve agreed on the best solution, our team of plumbers in Hartland, WI will get to work, completing the job efficiently and professionally. We use only the highest-quality materials and state-of-the-art equipment to ensure long-lasting results.


Step 4 – Final Inspection and Customer Satisfaction


After the work is completed, our plumbers in Delafield, WI perform a final inspection to make sure everything is functioning as it should. Your satisfaction is our top priority, so if you have any concerns, we’ll address them promptly and ensure the job meets your expectations.


Contact Us Today for Expert Plumbing Services


If you’re looking for reliable plumbers in Delafield, WI look no further than Sterling Mainz & Sons Plumbing & Pumps, Inc. We’re here to tackle any plumbing issue, big or small, and provide you with the highest level of service. Reach out to our plumbers in Hartland, WI to schedule a consultation or request a quote. Our team of plumbers in Delafield, WI is ready to assist you!

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At   Sterling Mainz & Sons Plumbing, we take pride in providing exceptional plumbing to our customers. We would be grateful if you could share your thoughts about our company with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review  of Sterling Mainz & Sons Plumbing and let others know what you think.

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