What Does "17 GPG" Actually Mean?
If you live in Santa Clarita, your water tests at approximately 17 grains per gallon (GPG). To put that in context, the state average is generally around 10 GPG. Water above 10.5 GPG is classified as "Very Hard" by the Water Quality Association. At 17 GPG, Santa Clarita Valley water is well into that category.
Grains per gallon measures the concentration of dissolved calcium and magnesium minerals in your water. These minerals are responsible for the white crusty buildup you see on faucets, showerheads, and inside appliances. The higher the GPG, the faster that buildup accumulates and the more damage it causes over time.
The Hidden Cost of Hard Water in SCV
Hard water is not just a cosmetic issue. It is an ongoing financial drain. On average, Santa Clarita Valley homeowners lose approximately $1,970 per year to hard water damage. That cost comes from several places.
Water heater strain. Scale deposits coat heating elements inside your water heater, creating an insulating layer that forces the unit to work harder. This increases energy consumption and shortens the unit's lifespan.
Appliance wear. Dishwashers, washing machines, and any appliance that uses water degrades faster when processing hard water. Scale accumulates inside valves, hoses, and internal components.
Plumbing buildup. Mineral deposits accumulate inside pipes over time, reducing water flow and increasing pressure on joints. Older homes in neighborhoods like Newhall and Saugus are especially vulnerable.
Extra cleaning products. Hard water reduces soap effectiveness. Homeowners end up using more detergent, dish soap, and cleaning products to achieve the same results.
Why SCV Water Is Harder Than Most
Santa Clarita Valley gets its water from a combination of local groundwater and imported sources. The local groundwater passes through mineral-rich geological formations that dissolve calcium and magnesium into the supply. This is a natural process — not a safety issue — but it creates hardness levels that affect every home in the valley.
Cities throughout SCV experience similar conditions, from Valencia and Stevenson Ranch to Canyon Country, Newhall, and Saugus. Rural areas like Castaic and Agua Dulce that rely on well water often experience even higher hardness levels than municipal SCV water.
The Salt Softener Ban
If you are researching water softeners for your Santa Clarita home, you need to know that traditional salt-based water softeners are banned throughout the Santa Clarita Valley. The ban was enacted to protect the Santa Clara River from brine discharge that salt softeners produce.
The legal alternative is a salt-free water conditioning system, which prevents scale buildup without producing wastewater or salt discharge. In Los Angeles County and Ventura County where no ban exists, both salt-free and salt-based systems are available.
It Is Not Just Hardness
SCV water has been found to contain 12 or more detected contaminants, with 9 exceeding the Environmental Working Group's health guidelines. Santa Clarita also ranks in the top 10 statewide for PFAS contamination — the highest in Los Angeles County.
PFAS, known as "forever chemicals," do not break down in the environment and have been linked to serious long-term health concerns. Boiling does not remove them. Most standard pitcher filters are not designed to capture them. Effective PFAS removal requires specialized filtration such as reverse osmosis.
What You Can Do
A whole-home water conditioning system installed at your point of entry treats every tap, shower, and appliance. For drinking water, an under-sink reverse osmosis system provides additional protection targeting PFAS and dissolved contaminants.
Dan Jimenez at Santa Clarita Water Conditioning has been treating SCV water since 1998. He offers a free in-home water test — hardness, TDS, and contaminant levels measured on-site. No cost, no commitment. Call 661-259-1536 to schedule.
Frequently Asked Questions
Is 17 GPG dangerous to drink? Hard water at 17 GPG is not a health hazard. Calcium and magnesium are safe to consume. The concern is the damage these minerals cause to plumbing, appliances, and fixtures over time.
How do I find out my exact water hardness? Dan offers a free in-home water test for Santa Clarita Valley homeowners. He tests hardness, TDS, and contaminants on-site. Call 661-259-1536 to schedule.
Can I use a salt-based softener in Santa Clarita? No. Salt-based water softeners are banned throughout the Santa Clarita Valley under a local ordinance protecting the Santa Clara River. Salt-free conditioning systems are the legal alternative.
How much does it cost to treat hard water? Financing is available through Aquafinance and the Lowe’s Rewards Credit Card, with payments starting as low as $15 per month (terms vary by promotion). The exact system depends on your home and water conditions — Dan will recommend the right fit after testing your water.