Council approves Horizon 6 water IGA and renews pump and odor-control contracts for utilities

The Lake Havasu City Council on July 9 approved an intergovernmental agreement with Mohave County acting as the Horizon 6 Improvement District board and authorized multiple renewals and awards for water and wastewater equipment, repairs and odor-control chemicals.

Public Works staff member Mr. Clark said the Horizon 6 water system serves about 260 properties and that the intergovernmental agreement continues a 20-year arrangement in which the county acts as the board of directors and the city provides operations. Clark said the updated agreement was adjusted to ensure Lake Havasu City recovers all costs so city taxpayers do not subsidize the small district. The council adopted Resolution Number Nineteen‑three331 approving the IGA and authorized the city manager to execute the agreement; the motion carried 6–0.

Utility staff reported and the council approved renewals of cooperative purchase agreements and annual expenditures exceeding $50,000 for multiple vendors used for pumps, spare parts and repair services. Specific items and details discussed at the meeting included:

• Hennessy Mechanical Sales LLC: The council approved renewal of the cooperative purchase agreement for large, mostly submersible pumps and parts. Staff said a recent pump purchase price was $98,000 for a 350-horse Fairbanks-Morris pump and explained purchases are necessary to maintain spare capacity for pump stations and to address rag-clogging issues.

• James Cook and Hobson Inc.: The council approved renewal of a cooperative purchase agreement and annual expenditures over $50,000 to obtain wastewater pumps and parts. Staff described purchases including a planned 250-horse Flygt pump for the London Bridge Road lift station priced at about $110,000 and other pumps in the $50,000 range. Staff said some pumps and parts come from overseas and can take several months to arrive, so maintaining spares is critical.

• Evoqua Water Technologies (odor-control chemicals): The council awarded an agreement for odor-mitigation chemicals used along the Highway 95 sewer corridor to control hydrogen sulfide (H2S). Staff described two primary chemicals in use — calcium nitrate for short runs and calcium hydroxide for long detention times — and noted the city will trial additional products at several small lift stations to evaluate cost and performance.

Staff also corrected a fiscal-year expenditure figure for prior purchases, stating that FY 2018–19 expenditures for pumps and related purchases totaled $212,178.55 (rather than a lower figure shown in the materials) because some orders arrived late and were received June 30.

Council members asked technical questions about pump life cycles, rebuild strategies and warranty and staff described that factory rebuilds now include longer warranties compared with some local rebuild shops. The council approved the contracts and renewals unanimously (motions carried 6–0).