*The Angi rating for Water Softener Service companies in Monrovia, CA 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 Monrovia, CA 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 November 21, 2025
Serving Monrovia, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Free estimates
Emergency services offered
"Amazing service . Chris is very knowledgeable and gets his work done very nicely. I have him installed water softener and RO and he got the work done flawlessly. Very reasonable quotes as well"
Serving Monrovia, CA and surrounding areas
Approved
In business since 2001
Free estimates
Credit card accepted
"The installers did a great job and proposed solutions for placement of the softener units so they were not intrusive. Our water quality is dramatically improved!"
+14
Serving Monrovia, CA and surrounding areas
Approved
In business since 1981
Free estimates
Emergency services offered
"The repair guy came within the estimated time and resolved my water heater issue, no charge."
+542
Serving Monrovia, CA and surrounding areas
Approved
In business since 1978
Free estimates
Emergency services offered
"Only good things to say about McLay Services! From scheduling the services call to getting the work done. The technician was up front with pricing and told me only what needed to be repaired on my water heater. He even did a free safety check on my furnace and found a dirty air filter that needed replacement. I will be calling again in the future."
+3
Serving Monrovia, CA and surrounding areas
Approved
In business since 2000
Free estimates
Warranties offered
"Can not say enough positive things about this company. Usually do alot of things diy, but i would hire them any time to do plumbing. Their professionalism is way above board. Prices more than fair. Miguel is a definite asset to this company. When i have a plumbing problem i will definitely call them back. (had another company come before them that could not get the job done and suggested replacing the trap under my bathtub. My home is not on a foundation but a slab, and that means removal of my bathtub. The cost of his visit would have gone from one hundred dollars to thousands. ) Thank you Service Champions!"
+13
Serving Monrovia, CA and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"Super efficient, and extremely friendly service from Josh."
+24
Serving Monrovia, CA and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
With 50 years of combined experience, we at Pure Water Filtration pride ourselves on being the best in the industry. Our ability to design and install complex projects separates us from our competitors. We do everything from simple installs such as residential reverse osmosis to more complex commercial multi-unit apartment buildings or well water treatment. For pure, healthy water, we have a solution for any budget. We use American-made products, allowing us to offer the best warranties in the industry. All of our products meet NSF and ANSI standards. Pure Water Filtration has a close relationship with the California State Drinking Water Program and local testing laboratories. We guarantee you will be satisfied when choosing Pure Water Filtration as your go-to water treatment specialist.
+3
Serving Monrovia, CA and surrounding areas
In business since 2006
Free estimates
Emergency services offered
"Installation went smoothly. I've had the system for about 5 years and I recommend it highly. The water tastes great. We don't buy water anymore. Our pipes are protected from mineral buildup. Very pleased with our purchase."
+11
Serving Monrovia, CA and surrounding areas
In business since 2011
Free estimates
Emergency services offered
"Called AYS Plumbing for a water heater install. The service tech Mike Garcia was very prompt and very professional. He explained what he was going to do and what it was going to take to get the job done. Mike cleaned up after himself and also got rid of my old water heater. Definitely will be using AYS for my future plumbing needs. Mike Garcia was very professional and very knowledgeable. Thanks again Mike, 10 starts from me!!!!!"
+1
Serving Monrovia, CA and surrounding areas
In business since 2004
Emergency services offered
"The job was done very well and quickly. Cleaned my sink from yesrs of hard water buildup. Left the place clean. They were quick and did a great job. Would definitely hire them again."
+31
From average costs to expert advice, get all the answers you need to get your job done.
How much a water softener costs in Los Angeles, CA, depends on your home’s size and the system’s type and capacity. Our expert guide explores all the price factors.
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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.
