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To read the rest of the comic strip, check out our piece "How San Francisco’s sewers do (and don’t) work" by @ronnaraz.bsky.social

missionlocal.org/2026/01/san-...
Comic: How San Francisco's sewers do (and don't) work
Every few years during the rainy season, certain neighborhoods of San Francisco flood. Why? Here's our comics explainer.
missionlocal.org
January 7, 2026 at 8:32 PM
...and, in a few areas, our sewage pumps just can't keep up.

That can cause bad flooding, year after year.
January 7, 2026 at 8:32 PM
Today, we have three major treatment facilities...
January 7, 2026 at 8:32 PM
This system has been updated, but unlike other (newer) cities, we still use a combined stormwater-sewage system.

That causes problems.
January 7, 2026 at 8:32 PM
As whole swaths of the city sank, the groundwater continued to run on its natural incline—even if that was now above the ground, on the street.
January 7, 2026 at 8:32 PM