MCS Water

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421 E Valley Blvd
San Gabriel, CA 91776

MCS Water Technology, founded in 1987, is a leading provider of innovative water solutions in Los Angeles and its surrounding areas. Specializing in both residential and commercial systems, their expertise covers everything from drinking water purification to comprehensive water supply projects.

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4.0105 reviews
Photo of Adam S.
Adam S.
11/27/2025

Had a system installed a while back but never got around to getting the filter changed. I called them up and they were able to send someone out the next day. At first it was a bit of a...

Photo of Jane ..
Jane ..
8/29/2025

We recently installed the Terminator water softener with a tankless RO system from MCS Water, and the whole experience has been excellent. From the start, Michelle was wonderful to work with--she...

li x.
12/15/2025

Had a great experience installing our water softner system. The team was professional, punctual, and explained everything clearly. Installation was clean and efficient, and the water quality...

Photo of Yungming C.
Yungming C.
11/17/2025

Good service and excellent quality jobs. I have been with them more than 20 years. Will still go with them whenever I need.

H P.
9/28/2025

Walked into the San Gabriel MCS showroom and was help by Tinny. She is very knowledgeable and was able to help us with what we were looking for. We decided to purchase a soft water system from...

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The Pureflow Filtration Div. of California Environmental Controls, Inc, was founded in 1973 when we designed and sold our first Arsenic, Iron and Manganese removal pressure filtration system to the City of Fillmore, California. This 1, 500 gpm system introduced the Pureflow process that included PM-100 proprietary filter media. PM-100 is a permanent, highly adsorptive, catalytic media that does not require regeneration ( or KMnO4 feed ) and offers flow rates up to 15 gpm / sq. ft. of filter media. We have continued to expand our heavy metal removal processes, and in addition to PM-100, we also provide non-proprietary media ( e.g. PM-200, Manganese Dioxide [ MnO2 ] ). PM-200 is a permanent catalytic adsorptive filter media, with a high Manganese content, that will also remove heavy metals such as Arsenic, Iron, Manganese, Radium / Uranium and Hydrogen Sulfide. In addition to permanent media systems, we provide Titanium based disposable media systems for the removal of Arsenic from drinking water supplies. Pureflow Filtration also manufactures water treatment systems for the removal of Fluoride ( with PM-500 Activated Alumina media ), and Perchlorate ( with PM-600 ion exchange resin ) from drinking water supplies. Pureflow Filtration has pressure filter installations in the United States and Canada with flow rates ranging from 25 gpm to 9, 000 gpm, and gravity filter installations in Mexico with flow rates ranging from 2, 700 gpm to 15, 000 gpm. Pureflow works closely with Municipal / Consulting Engineers, and private water companies, to design and manufacture water treatment processes that meet EPA and State Department of Health Services ( DHS ) standards. All Pureflow Filtration media meet NSF / ANSI Standard 61. We perform field pilot testing to verify treatment efficiency, develop pretreatment requirements, operational costs and final design. Pureflow also offers filter remediation service including replacement media, valves, controls, etc. Pureflow Filtration will form Joint Venture associations with Consulting Engineers and Contractors to provide a qualified team approach to offer Design / Build water treatment plants.

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