Santa Margarita Water District delivers 305 PPM very hard water to your home. Our whole-home filtration systems remove hardness, chlorine, and scale — for softer skin and better-tasting water from every tap.
Rancho Santa Margarita's water is supplied by the Santa Margarita Water District. The local supply measures 305 PPM of hardness, classified as "Very Hard" — well above the 120 PPM threshold that defines hard water.
The utility also uses chlorine/chloramines at roughly 2.1 mg/L for disinfection. While safe to drink, these leave a chemical taste and odor and can dry out skin and hair. The high mineral content causes scale buildup on fixtures, glassware, and appliances — the most common water complaint we hear from Rancho Santa Margarita homeowners.
Very Hard — anything over 120 PPM is considered hard water.
Used for disinfection — causes bad taste and dry skin.
Scale buildup throughout plumbing.
Rancho Santa Margarita is a city in Orange County, California, United States. One of Orange County's youngest cities, Rancho Santa Margarita is a master-planned community. The population was 47,949 at the 2020 census, up from 47,853 at the 2010 census. Although it is named for Rancho Santa Margarita y Las Flores, which was in San Diego County, the city limits fall within the borders of Rancho Mission Viejo. At 20 characters long, it is the longest city name in California.
As a locally based water filtration company serving Rancho Santa Margarita and the surrounding Orange County area, truClear Water Filtration Co. understands the specific water quality challenges that Rancho Santa Margarita residents face. Our team has installed hundreds of whole-home filtration and softening systems in Rancho Santa Margarita homes, giving us firsthand experience with the mineral content, scale behavior, and chlorine levels characteristic of the Santa Margarita Water District supply.
Whether you live in a newer Rancho Santa Margarita development or an established neighborhood with older plumbing, our free in-home water test will reveal exactly what's in your water — and our licensed installers (Applied Plumbing & Rooter, CA Lic. #1151992) will recommend the right system for your home's specific needs.
At 305 PPM, Rancho Santa Margarita water is packed with calcium and magnesium. Over time, these minerals crystallize inside your pipes, water heater, and appliances.


* Drag the slider to compare scale buildup vs. protected pipes
Four premium filtration solutions — we'll help you pick the right one based on your free in-home water test.
Stainless Steel System
Ultimate protection with lifetime warranty. Maximum filtration and salt-free scale prevention.
High-Capacity System
Excellent whole-home filtration and scale control at an incredible value.
Space-Saving Design
Advanced Filtersorb SP3 technology protecting your plumbing, fixtures, and appliances.
Under-Sink Drinking Water
Bottled-quality water right at your kitchen sink. Removes 99% of dissolved solids.
Reach out for a free, no-obligation consultation. We answer fast.
We test your Rancho Santa Margarita home's water and recommend the right system.
Professional Installation by Applied Plumbing & Rooter, Inc. — CA License #1151992
Common questions from Rancho Santa Margarita homeowners about our water filtration systems.
We provide the same premium water filtration and free testing to homeowners in the surrounding communities.
Lock in your $300 savings and 50% off reverse osmosis — plus 3 years of complimentary filter & media replacements.