5.
Never flush harmful materials into the septic tank. Grease, cooking fats and oils, newspaper, "flushable wipes," paper towels, napkins, facial tissue, rags, coffee grounds, pads and tampons, condoms, and cigarettes cannot easily decompose in your tank. Chemicals like solvents, oils, paint, and pesticides are harmful to the system's proper operation and may pollute the groundwater. Septic tank additives don't improve the tank's performance, and they don't reduce the need for pumping. Learn how to dispose of hazardous household waste properly at
hazwastehelp.org.