City of Signal Hill Water delivers 265 PPM 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.
Signal Hill's water is supplied by the City of Signal Hill Water. The local supply measures 265 PPM of hardness, classified as "Hard" — well above the 120 PPM threshold that defines hard water.
The utility also uses chlorine/chloramines at roughly 1.9 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 Signal Hill homeowners.
Hard — anything over 120 PPM is considered hard water.
Used for disinfection — causes bad taste and dry skin.
Hard water spots and chlorine taste in tap water.
Signal Hill is a city in Los Angeles County, California, United States. As of the 2020 census, the population was 11,848. Completely surrounded by the city of Long Beach, Signal Hill is an enclave known for its elevated position — the hilltop offers panoramic views of the Pacific Ocean and the Los Angeles Basin. The city was incorporated in 1924 and was the site of one of California's most productive oil fields, the Long Beach Oil Field discovery in 1921.
As a locally based water filtration company serving Signal Hill and the surrounding Orange County area, truClear Water Filtration Co. understands the specific water quality challenges that Signal Hill residents face. Our team has installed hundreds of whole-home filtration and softening systems in Signal Hill homes, giving us firsthand experience with the mineral content, scale behavior, and chlorine levels characteristic of the City of Signal Hill Water supply.
Whether you live in a newer Signal Hill 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 265 PPM, Signal Hill 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 Signal Hill home's water and recommend the right system.
Professional Installation by Applied Plumbing & Rooter, Inc. — CA License #1151992
Common questions from Signal Hill 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.