What is specifically prohibited by WAC regarding the discharge of effluent from intermittent sand filters?

The prohibition of discharging effluent from intermittent sand filters directly to surface water and groundwater is rooted in environmental protection and public health considerations. Both types of discharge can lead to contamination of natural water bodies and groundwater supplies, posing risks to ecosystems and human health.

Effluent from septic systems can contain pathogens, nutrients, and other contaminants that, if released into surface water, could negatively affect aquatic life and human activities that rely on clean water sources. Direct discharge to groundwater can potentially contaminate drinking water supplies, making strict regulations necessary to ensure the safety and sustainability of water resources.

By preventing both types of discharge, regulations aim to enforce responsible waste management practices that promote environmental integrity and public safety. These prohibitions help in managing the impact of septic systems, particularly in areas where soil conditions or proximity to water sources could exacerbate contamination risks.