PILLAR: Sustainable
AGENDA DATE: September 23, 2026
COUNCIL DISTRICT(S): Outside
DEPARTMENT: Dallas Water Utilities Department
PRIORITY: Infrastructure
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SUBJECT
Title
Authorize a construction services contract for the East Side Water Treatment Plant Residuals Handling Project, Phase II, located at 405 Long Creek Road, Sunnyvale, Texas – CLW Water Group, LLC, lowest responsible bidder of five - Not to exceed $22,442,000.00 - Financing: Water Capital Improvement G Fund ($2,892,286.97), Water Capital Improvement F Fund ($19,343,874.28), and Water Construction Fund ($205,838.75)
*In alignment with Water and Wastewater Capital Improvement Program.
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BACKGROUND
The East Side Water Treatment Plant (ESWTP), located at 405 Long Creek Road, Sunnyvale, Texas, was originally constructed in the 1960s. With a treatment capacity of 440 million gallons per day, it is the largest of three water treatment plants serving Dallas Water Utilities customers. Residuals management at the plant has long presented operational challenges due to aging infrastructure and increasing solids loading from updated plant processes.
Since the early 1990s, the ESWTP has primarily used a system of five on-site lagoons for residual management. However, a 2019 residuals project indicated that the remaining useful lagoon capacity would be reached by 2025. To address this limited capacity, the ESWTP Residuals Handling Improvements, Phase I project was awarded in 2021, which included construction of two new lagoons and a permanent structural concrete dewatering pad, along with plant drain modifications to separate residual streams, and extend lagoon life. Settling basin blowdown was redirected to the new lagoons, while filter backwash continued to the existing lagoons.
The next phase of improvement involves the existing lagoon embankments. Since the lagoons are hydraulically connected they cannot be isolated for maintenance...
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