Normal septic tank effluent typically has how many parts per million in suspended particles?

Normal septic tank effluent typically contains approximately 140-150 parts per million of suspended particles. This range reflects the typical performance and operational characteristics of conventional septic systems, which are designed to treat wastewater by separating solids from the liquid effluent.

The effluent contains organic matter, bacteria, and other particles that have not been fully decomposed or filtered out during the treatment process. Understanding this range is crucial for septic system installers and maintenance personnel, as it helps in assessing the effectiveness of the septic system, ensuring it meets environmental standards, and preventing potential issues such as system failure or groundwater contamination. Having this knowledge aids in providing correct guidance to homeowners regarding system maintenance, longevity, and when to consider upgrades or repairs.