Santa Ana's Hard Water Problem: What It's Quietly Doing to Your Dishwasher, Washer, and Ice Maker
I get some version of this call every week: “My dishwasher is only two years old and my glasses come out cloudy.” Or: “The washer smells musty no matter how much I clean it.” Or: “The ice maker keeps freezing up and jamming.” Different appliances, different symptoms, same root cause about eight times out of ten in this city: Santa Ana’s water.
Coastal Orange County cities blend in a fair amount of imported water from the Metropolitan Water District, which softens things up. Santa Ana leans much more heavily on the Orange County Groundwater Basin — water pumped straight out of the aquifer that’s been recharged by the Santa Ana River for a century. That groundwater picks up dissolved calcium and magnesium as it moves through the local geology, and it comes out of the tap tasting fine but testing hard to very hard, commonly in the 15 to 20 grains-per-gallon range depending on the well field serving your block. (Your exact number is on the annual water quality report the city publishes — worth a look if you’ve never checked.) For comparison, anything north of 10.5 grains per gallon is classified “very hard” by USGS standards. Santa Ana isn’t borderline. It’s solidly in that zone.