Best Water Softener San Jose, CA: A Complete Guide to Local Water Improvement
San Jose is a good example of why “safe to drink” and “easy on plumbing” are two very different things. Based on San Jose utility water quality reports and Santa Clara Valley regional source data, much of the city sees hardness in the moderate-to-hard range, commonly around 7 to 11 grains per gallon —roughly 120 to 190 mg/L as CaCO3 —with some groundwater-heavier service areas trending higher. That is exactly the range where scale starts coating tankless heat exchangers