San Diego
United StatesSafe to Drink
Quality Score70%
About San Diego
San Diego is a coastal city in southern California, known for its beaches, parks, and favorable climate. It hosts a population of approximately 1.4 million.
Water Situation
San Diego's tap water originates primarily from the Colorado River and Northern California through various aqueducts. The water is treated and tested to meet safety standards, though some residents report concerns about mineral content like calcium and magnesium leading to hard water. Over time, there have been technological improvements in the filtration processes to address these issues and ensure compliance with state and federal quality guidelines.