What is the maximum allowable discharge limit for total suspended solids (TSS) typically set by regulations?

The maximum allowable discharge limit for total suspended solids (TSS) typically set by regulations is often 30 mg/L for effluent. This limit is established to protect water quality in receiving bodies, such as rivers and lakes, where excess suspended solids can harm aquatic ecosystems by reducing light penetration, smothering habitats, and transporting pollutants.

Regulatory standards are designed to ensure that discharged water is adequately treated to minimize environmental impacts. The 30 mg/L limit is a common requirement aimed at maintaining a balance between effective treatment and the practical capabilities of wastewater treatment facilities. This standard reflects a consensus in environmental regulation regarding the acceptable level of suspended solids in treated effluent, ensuring that water quality objectives are met for public health and ecological integrity.

Other values for TSS limits, such as 10 mg/L, 50 mg/L, or 100 mg/L, are generally considered too stringent or lenient compared to typical regulatory benchmarks. This makes the 30 mg/L standard a widely recognized guideline in the context of wastewater management.