Your Full-Service
Water Treatment & Plumbing Experts
Offering Families from the Monrovia & Pasadena Areas the ability to have their water filtered to perfection through rigorously tested & certified systems installed with white-glove service, maintained by our licensed local experts who adhere to the industry code of ethics since 2003.
“I have been calling North Brothers Plumbing and Rooting for my plumbing needs for at least 12 years. Jay is very professional, gets the job done right the first time. I’m now on one of the service plans and it really does provide peace of mind. With the service plan, I’m able to call NBP instead of trying to figure out small things for myself.
Also, yearly flushing of my tankless water heater is included and they call me to let me know when the service is needed!”
– Kevin Gambrel

Your Full-Service
Water Treatment Experts
Offering Families from all of the Monrovia & Pasadena Area the ability to have their water filtered to perfection through rigorously tested & certified systems installed with white-glove service, maintained by our licensed local experts who adhere to the industry code of ethics since 2003.
“I have been calling North Brothers Plumbing and Rooting for my plumbing needs for at least 12 years. Jay is very professional, gets the job done right the first time. I’m now on one of the service plans and it really does provide peace of mind. With the service plan, I’m able to call NBP instead of trying to figure out small things for myself.
Also, yearly flushing of my tankless water heater is included and they call me to let me know when the service is needed!”
– Kevin Gambrel
Book a Water Test Today & Find Out What’s In Your Water!
Why Choose Us?
Guarantee & Warranties
We guarantee all of our installations and our products have excellent warranties direct from the manufacturer. With North Brothers Plumbing you’ll rest assured we’ll be here for years to come to help maintain your water system cost-effectively.
Professional Water Experts
Why buy from a local water expert instead of a big box store or online retailer? Because we understand local California, CA water quality! We live, work, and raise or families in this area, and we’re committed to finding the right water solution for your home the first time.
3rd Party Seals of Approval
Many products we offer have earned agency seals like ISO 9001, 2 Gold Seals of Approval from the Water Quality Association, and several plumbing seals as well. You will find these proudly displayed to show we’re not the only ones impressed by our quality.
Proudly & Safely "Made in the USA"
The systems we offer are proudly Made in the USA and we are part of the largest manufacturer of water treatment systems in the world. Our systems, with their innovative technology, have satisfied customers for years; giving them cleaner and healthier water.
How can we help you?
Our water specialists are ready to help you solve these common water issues!
Hard Water
Buildup
More than just a pain to clean, hard water can cause permanent damage to water-using appliances, pipes, faucets, and fixtures. Luckily, there’s an all-natural solution that will protect your home…
Iron &
Mineral Stains
Iron causes red/orange stains and can be seriously hard to clean up. There are two different types of iron, both treated by different methods, so a home water test can help you determine the best plan of action.
Bad Tasting and/or
Contaminated Water
Most water contamination happens AFTER the water leaves your local water treatment plant. Between the miles of pipes, and the use of chlorine, it’s not unusual for water to be contaminated & taste pretty gross.
Local Monrovia & Pasadena Area Reviews
Looking For Pricing?
We try to keep it quick and painless for you, with two no-hassle options:
1. Give us a call 626-605-1713
Or…
2. Click the button below and fill out the form to get a quick call back…
Either way, we’ll ask the right questions, set up a no obligation consultation to test your water. Then, we can provide options for the best equipment solution.
We have a variety of systems and purchase options to fit your home and financial needs: from affordable purchase prices, lease to own options, convenient rentals, to financing solutions. Getting healthy water for your home and family has never been so easy.

Local Info
Water Treatment Monrovia CA
Water Treatment Companies in Monrovia
North Brothers Plumbing was founded in 2003 as a water treatment company and has been offering the best commercial and residential water softeners, reverse osmosis systems, water filters, bottled water, and more for decades in the Monrovia area. We’ll give you a water analysis and figure out the ideal water treatment system for your home or office application. We carry water softeners, filters, and RO systems from Water Drop, and have everything from high-quality affordable options to the highest-tech items that can connect via wifi. Give us a call for a free consultation today.
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704 W Colorado Blvd Monrovia CA 91016
Phone Number: 626-605-1713
Hours: 8am-5pm Mon-Fri
About Monrovia CA:
Monrovia is located 20 miles northeast of Los Angeles in the foothills of the San Gabriel Mountains in the San Gabriel Valley in the county of Los Angeles. Monrovia was founded May 17, 1886 and incorporated in 1887. Monrovia, capital, largest city, and chief Atlantic port of Liberia, located on Bushrod Island and Cape Mesurado. It was founded during the administration of U.S. Pres. James Monroe (for whom it was named) by the American Colonization Society as a settlement for freed American slaves.
Directions:
From San Gabriel Valley Airport 4233 Santa Anita Ave, El Monte, CA 91731, United States Head southwest on Santa Anita Ave toward Lambert Rd 10 ft Make a U-turn at Lambert Rd Pass by McDonald's (on the left in 0.8 mi) 1.0 mi Turn right onto W Hondo Pkwy 0.2 mi Continue onto Tyler Ave Pass by Jack in the Box (on the left in 0.7 mi) 0.7 mi Continue onto S 2nd Ave 2.6 mi Turn right onto E Colorado Blvd Destination will be on the right 0.7 mi To 704 W Colorado Blvd Monrovia, CA 91016, USA
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Counties in/near Monrovia:
Los Angeles County and Orange County
Cities in/near Monrovia:
Arcadia, San Gabriel, Alhambria, Monrovia, Los Angeles, Long Beach, Santa Ana, Anaheim, Riverside, Glendale, San Bernardino, Huntington Beach, Irvine, Ontario, Fontana, Santa Clarita, Rancho Cucamonga, Garden Grove, Pomona, Corona, Torrance, Pasadena, Fullerton, Palmdale, Orange, Lancaster, El Monte, East Los Angeles, Inglewood, Downey, West Covina, Costa Mesa, Norwalk, Burbank, Rialto, South Gate, Compton, Mission Viejo and Carson.
Zip Codes in/near Monrovia:
91008, 91010, 91024, 91107, 91001, 91107, 91104, 91106, 91105, 91103, 91108, 91775, 91101, 91007, 91006, 91780, 91776, 91801, 91770, 91755, 91754, 91803, 91030, 90041, 90042, 90032, 90031, 91011, 91214 and 91020
Neighborhoods in/near Monrovia:
Frequently Asked Water Treatment Questions:
What is water treatment?
Water treatment is any process that improves the quality of water for a specific purpose. Reasons for improving water quality may include drinking, cooking, bathing, or other household activities.
How does water treatment work?
Water treatment works by running water through chemicals and filters to remove toxins and hazards. This is done at both the municipal level and at a private level in homes and/or businesses. While a water treatment plant may make water potable again, healthy, clean, and quality water can only be truly achieved at the point of service (pos). This is because the water running to your home or business, from the municipal water supply, picks up contaminants from the pipes it runs through. In-home water treatment, or POS systems, run your water through an additional set of filters and media that remove contaminants that may have both been picked up from the city water pipes and those that may not have been removed, to begin with.
How many steps are in the water treatment process?
There are typically 9 steps in the municipal water treatment process: Collection, Screening and Straining, Chemical Addition, Coagulation and Flocculation, Sedimentation and Clarification, Filtration, Disinfection, Storage, and finally Distribution. Private water treatment systems for homes or businesses can have anywhere from 3 to 16 filtration stages that work to remove additional contaminants. Some of these stages include carbon, reverse osmosis, UV light, and remineralization.