• Arizona
  • Thursday , Feb 1 , 2018

Area Info

San Tan Valley Area Information

2 minutes reading time (363 words)

Pecan Treatment Facility Expansion Underway

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This month, EPCOR is beginning construction on the much-needed – and highly anticipated – project to add capacity to the Pecan Water Reclamation Plant (WRP) and replace the existing headworks. This is one of EPCOR's most urgent wastewater priorities for San Tan Valley customers, and they are on an accelerated timeline to get it done by the first quarter of 2022 before the highest-flow months next winter.

The project
The current Pecan WRP is a 3 million gallons per day (MGD) Biological Nutrient Removal facility located in the northern part of EPCOR's San Tan Valley service area, adjacent to the Queen Creek Wash. The Arizona Department of Environmental Quality (ADEQ) permit requires the expansion of wastewater treatment facilities when the amount of wastewater coming into the plant exceeds 90% of what the facility can handle. The amount of wastewater coming into the Pecan facility regularly exceeds that 90% trigger point.

The $21 million expansion project will add 1 MGD of capacity for a total of 4 MGD, the level the facility is permitted by ADEQ to receive and treat. It will also replace the existing headworks, which is in very poor condition.

This additional capacity is a critical factor for several reasons. Without the extra space for wastewater to come into the plant, there's a continued risk of overflows. And the plant is already operating at capacity – until it has additional treatment space, new homes in the area can't be built.

EPCOR made a commitment to the San Tan Valley community. They're getting started right away to bring the Pecan wastewater treatment facility into compliance with environmental permits and accommodate future growth in the San Tan service area.

Timeline
The Pecan WRP expansion is on an accelerated timeline with construction starting in March 2021 and expected completion in early 2022. Until then, we're continuing to use interim measures including the new Queen Creek Interconnect (see below) to handle the amount of wastewater delivered to this facility for treatment.
This timeline is extremely rapid for a project of this scale, but the work has been needed for years and EPCOR is committed to safely expediting it to benefit San Tan customers and the community.

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