I’ve heard that in CaCa, every minute 10,000 toilets are flushed and eventually end up in the ocean.
Can't be true. Tough environmental standards on sewage in California. Sewage is treated after collection, with solids going to landfill and waste water is cleansed before release into waterways. Water runoff from streets uses different pipes and flows directly into waterways; no doubt that homeless are contaminating water runoff from streets.