How is reserve capacity calculated?

Reserve capacity is calculated as one-third of the daily flow in gallons. This concept is essential for ensuring that an on-site sewage facility has adequate capacity to manage potential fluctuations in daily wastewater generation, which can occur due to factors like increased occupancy, seasonal variations, or unexpected events.

Calculating reserve capacity helps in preventing overload and ensures that the system functions efficiently and effectively under various conditions. Having this buffer allows for the safe and sustainable operation of the sewage system, thus protecting public health and the environment.

In practice, using one-third of the daily flow as the basis for reserve capacity reflects a standardized approach that supports system design and planning, ensuring that the sewage treatment process remains reliable and does not exceed its operational limits.