An old-timer like me remembers in the 70s San Francisco started a save water campaign with the slogan "If it's yellow. let it mellow, if it's brown flush it down". They also advocated putting a brick in your toilet tank to use less water per flush. The goal was to reduce water use by 10%. But water saving measures were so effective water use was reduced by over 25%. The the city complained there wasn't enough revenue due to the lower water consumption to cover the expense of the water department, so they raised the rates.
I remember all that. Lived through it.
Even funnier is in the late 2000s, downtown San Francisco smelled a lot like an open sewer. Turns out all the gov't mandates for low-flow toilets didn't push enough water through the sewer systems to flush everyone's poo. Then they had to hire big teams (at a massive expense) to go down in to the sewers and manually flush it all through with high-pressure hoses.
And guess what? That's what they're still doing today.
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