Plumbing in San Francisco, CA — What You Should Know
San Francisco's Victorian and Edwardian housing stock — much of it rebuilt after the 1906 earthquake — presents unique plumbing challenges. Many homes have original lead-soldered copper pipes, cast-iron drain stacks that date to the 1920s–30s, and the city's soft, acidic water (pH 6.5–7.5) which dissolves pinhole leaks in copper over decades.
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