TriCo Regional Sewer Utility

The official website of TriCo Regional Sewer Utility

Pretreatment - Business

Sanitary blockages and overflows triggered by fats, oils, and grease pose significant challenges to wastewater systems. When animal and vegetable-based oils and grease enter the sewage collection system in liquid form, their hydrophobic nature allows them to separate and float on water. Once in the system, these substances cool and solidify, leading to the accumulation of grease on sewer pipe surfaces. Over time, this buildup causes blockages, impeding the flow of wastewater and resulting in unsightly overflows. The consequences are far-reaching, involving both environmental and economic impacts. Cleanup efforts are not only time-consuming but also incur substantial costs. Beyond the financial burden, sewage backups from these overflows present a serious health hazard, carrying harmful bacteria, viruses, and pathogens that can compromise public health and the integrity of ecosystems connected to the affected waterways. Addressing the root causes and implementing preventive measures are crucial to mitigating the adverse effects of fats, oils, and grease on sanitary systems. Therefore, the Utility has established uniform permitting, maintenance, and monitoring requirements for controlling the discharge of grease from all food service and automotive facilities within the Utility's sanitary collection system. Many of the Utility’s educational documents and requirements can be found under "News" and "Related Pages".

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