Serving Waterloo, WI and surrounding areas
Approved
In business since 2003
Free estimates
Credit card accepted
"We were very pleased with the new water softener. Excellent and knowledgeable service."

*The Angi rating for Water Softener Service companies in Waterloo, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Softener Service needs.
*The HomeAdvisor rating for Water Softener Service companies in Waterloo, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Softener Service needs.
Last update on February 03, 2026
Serving Waterloo, WI and surrounding areas
Approved
In business since 2003
Free estimates
Credit card accepted
"We were very pleased with the new water softener. Excellent and knowledgeable service."

Serving Waterloo, WI and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"I urgently needed my water softener replaced. He came the same day, made an adjustment to the tank so that the overflow faced the drain and stopped spilling brine onto the water heater. Then he returned the next day and replaced the water softener for a very reasonable price. Kurt responded quickly to texts and my needs."

Serving Waterloo, WI and surrounding areas
Approved
In business since 1987
Emergency services offered
Warranties offered
"Same day service performed once I discovered this morning I had a problem with house/well pressure. Essentially, the "T" fitting that was installed in 2008, by another company along with new pump, had rusted a hole thru it on backside of fitting (galvanized). Pump was running constantly unable to build up pressure.
Installer replaced with a brass fitting (pulling pipe up from well) and made corrections to how the vertical and horizontal pipes were aligned/supported.
They were very friendly and professional both on the phone and in person. I even got a follow up call after service was completed. Found on Angie's list and was not disappointed. In the event I need further service, they get the
"




Serving Waterloo, WI and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1984
Free estimates
Emergency services offered
"Excellent, Excellent experience with Cardinal! Replaced hot water heater, water softener, two toilets and outdoor spigots. The two-person crew was highly professional, and provided top notch service and expertise. Highly recommend Cardinal for plumbing and electrical and HVAC needs."





+55

Serving Waterloo, WI and surrounding areas
Approved
In business since 2005
Free estimates
Warranties offered
At Southport Plumbing, Heating & Cooling, we take pride in delivering excellence at every level. We maintain an A+ rating with the BBB, and our technicians are NATE-certified, meeting the highest national standards in the HVAC industry. As a Carrier® Factory Authorized Dealer, were recognized for our technical expertise and commitment to quality. We were also recently named a top medium-sized workplace by the Milwaukee Journal Sentinel a reflection of how seriously we value and invest in our team.\n





+4
Serving Waterloo, WI and surrounding areas
Approved
In business since 1970
Free estimates
Customers say: Quick response
"Phil and Seth did a great job diagnosing and fixing a problem with my well pressure tank. They were very knowledgeable and answered all my questions."
Serving Waterloo, WI and surrounding areas
In business since 2010
Free estimates
Credit card accepted
"We were suddenly without water, and contacted Dean. We were very happy with his timely response and knowledgeable service. Great guy, and so easy to talk with. My dad would describe him as, "all wool and a yard wide"."

Serving Waterloo, WI and surrounding areas
In business since 1949
Free estimates
Emergency services offered
"Installer arrived on time, disposed of packaging material and showed me how to use the product."




Serving Waterloo, WI and surrounding areas
In business since 1931
Free estimates
Emergency services offered
"Our water heater quit on a Saturday. Although there was not an emergency service available to replace the heater before Monday, a technician did return my call and thoroughly and patiently discussed the symptoms and helped verify that we had safely turned off the gas and power. He arranged for a visit early Monday, and our water heater was replaced the next day.
We had a different installer for the water heater that died. We much preferred the attitude and efficiency of Landmark Services compared to our previous installer. We will continue to call on them for maintenance and repair if needed.
"



Serving Waterloo, WI and surrounding areas
In business since 1971
Credit card accepted
"He was very nice to talk with and repaired our washing machine. He even helped sweep the water out."





+2
From average costs to expert advice, get all the answers you need to get your job done.

Water softener repair costs can add up, but they’re almost always worthwhile. Use this guide to see what your project is going to cost before you get started.

Water softeners remove minerals from hard water in your home and make your water more pleasant to use. Learn more about how they work here.

Water softeners work to remove unwanted minerals from hard water through a filtration and recharge cycle. Keep reading to learn how a water softener works.

There are four common softener alternatives available on the market today. We compare and contrast each one to help you find your best-fit solution in this blog.

Water softeners rid your home of hard minerals and, well, soften your water. Even better, the regeneration process is an automatic cycle that works when you’re least likely to use it.

Your water softener works overtime to keep your water safe. Use this guide on how to check your water heater for damage or poor performance.