Triunfo Sanitation District Information

The Triunfo Sanitation District (Triunfo) owns and operates the Oak Park Water Service (OPWS), which is the potable water provider for Oak Park. The Triunfo Board of Directors has, for several years, been considering replacement of the existing Conifer potable water tank because it does not meet current seismic standards. Having been built in 1966, the tank is at the end of its useful life. As a water agency, the goal of OPWS is to provide a reliable supply of water to preserve public health and safety with minimal environmental impacts and the best possible efficiency. Triunfo retained Boyle Engineering to prepare an Operations Plan for OPWS in July 1996. During Plan preparation, Fugro West, a geotechnical sub-consultant to Boyle Engineering, noted the soils under the Conifer Tank would not support seismic anchors needed to bring the Conifer Tank up to current earthquake standards. It is this seismic concern that is driving the project. A follow-up 1998 Reliability Study addressed both the seismic and additional water storage needs by suggesting increasing the size from a 1 million gallon to a 2.1 million gallon tank serving both the Conifer and Lindero Zones. It also recommended and system infrastructure improvements throughout OPWS. Triunfo added pipelines to connect zones, improved automated controls, and installed emergency generators at pump stations. The pipelines and other reliability improvements allow water transfers from any of the four potable water tanks within the District to any other tank or zone. An above-ground tank storing 2.1 mg is approximately 32 feet high and 110 feet in diameter.