What are plants to reduce sewage in water?

Minimize water use when it's raining.

Dispose of household chemicals and automotive fluids properly – not down household drains or curbside storm drains.

Don’t put fats, oils or grease down the drain.

About 25 percent of homes in the United States use septic systems that locally treat their wastewater. When a septic system is improperly managed, elevated nitrogen and phosphorus levels can be released into local water bodies or ground water. Ten to 20 percent of septic systems fail at some point. Common causes of septic system failure include aging, inappropriate design, overloading with too much wastewater in too short a period of time and poor maintenance.