*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
"Very happy with my new 3-stage whole house water filter/installation - topnotch!!!"
Serving Monrovia, CA and surrounding areas
Approved
In business since 2001
Free estimates
Credit card accepted
"Brad and his team were transparent, thoroughly professional. Brad took his time to explain different solutions and competitive offerings, he went over and beyond to make sure customer satisfaction. Will hire them in a heartbeat if I ever need another water softener system."
+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 2020
Free estimates
Emergency services offered
Flash Plumbing and Services provides professional residential plumbing services, including leak repairs, faucet replacements, water heater repair and installation, and emergency plumbing solutions.\nOur licensed and highly trained technicians use advanced diagnostic tools and modern plumbing techniques to accurately identify issues and complete repairs efficiently.\nWe are committed to serving our community with affordable plumbing services, transparent pricing, and dependable workmanship homeowners can rely on.\nContact Flash Plumbing and Services today to schedule a consultation with a trusted local plumbing professional.
+1
Serving Monrovia, CA and surrounding areas
Approved
In business since 2000
Free estimates
Warranties offered
"Kayvan was a wonderful service tech! He was on time and professionally checked out the water heater and the HVAC system. He was so polite and friendly. He explained the need for a new filter in the heating unit and showed me photos of the unit located in the attic. He also offered to do a friendly deed for free, which I greatly appreciated, He’s a great asset to Service Champions!"
+13
Serving Monrovia, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Emergency services offered
"Authority came out to service my tankless water heater, and I?m really impressed with the experience. Chris was the technician who handled everything, and he made sure to explain how the system works and what needed to be done. He performed a thorough cleaning, checked all the components, and made sure everything was running efficiently. He was professional, knowledgeable, and took the time to answer all my questions. My water heater is running like new again! I?m very happy with the service and will definitely call them again for any future needs. Highly recommend!"
+3
Serving Monrovia, CA and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"Jeff Seale at Accurate Electrical Service was the most attentive, considerate, professional electrician I have ever met. I would highly recommend him and will definitely use him for future projects. Thank you for the reference."
+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
Approved
In business since 2001
Free estimates
Credit card accepted
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