Here's a list of some of the items our sewerage plants have to contect with before cleansing our waste water.
"Water, fecal matter, toilet paper, hair, lint, rancid grease, stomach acid and trace amounts of Pepto Bismol, chocolate, urine, body oils, dead skin, industrial chemicals (aluminum, copper, zinc, lead, chromium, nickel, molybdenum, selenium, silver arsenic, mercury,) ammonia, ... soil, laundry soap, bath soap, shaving cream, sweat, saliva, salt, sugar. No artificial colors or preservatives. Some variations in taste and/or color may occur due to holidays, predominant cuisine preference, infiltration/inflow, or sewer cross-connections."
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