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Tri Cities outlines $223.8 million plant upgrade, tank and sewer projects tied to new EPA limits
Summary
Tri Cities Wastewater Authority told Huber Heights council it will start a major plant improvement (GMP $223.8M) in August, complete sewer tie-ins this summer, and is financing work through EPA and OWDA loans with repayment projected around 2031.
Tri Cities Wastewater Authority representatives presented a multi-phase capital program to bring the regional plant into compliance with forthcoming Ohio EPA permit limits and to eliminate sanitary sewer overflows.
Danny, speaking for Tri Cities, summarized three projects: Taylorsville equalization tanks (phase 1, two 3.4M-gallon above-ground tanks completed in March at a project cost of $15,000,000); a new 30-inch dedicated Huber Heights sewer main to eliminate a hydraulic bottleneck (in progress, with Powell Road closed for a tie-in expected to finish in roughly a month and a Chambersburg Road tie-in by the end of July); and a plant improvement project whose guaranteed maximum price came in at $223,800,000 and is expected to begin construction Aug. 1 with a 4.5–5 year schedule.
“We can treat up to 4,000,000,000 with the b gallons of wastewater per year, and we see around 11,000,000 gallons per day,” Danny said while describing current flows and the share attributable to Huber Heights (about 53% of the daily flow). He told council the plant cannot meet new limits for total phosphorus, ammonia and some biochemical-oxygen-demand (BOD) thresholds, and that upgrades will increase capacity by about 64% (from approximately 11.2 million gallons to 17.3 million gallons per day).
Funding plans involve a mix of zero-percent loans previously awarded by Ohio EPA, and a construction loan at approximately 3.6% from OWDA; Danny said the authority anticipates repayment starting in about 2031 on a 30-year term for roughly $10 million per year. Tri Cities staff also said shifting operations in-house (ending a long-term Veolia contract) generated annual savings of about $600,000–$700,000 and gave the authority more operational control.
Council members pressed on master-planning and coordination with other projects (bike path routing and easements). Tri Cities confirmed the plant-improvement design reflects new permit requirements, and staff said they will return with details as bidding and financing are finalized.
