Casper selects Glasco for WWTP UV replacement
City of Casper Public Services Water and Sewer Utilities, Wyoming · Meeting date: November 3, 2026 · Published: November 4, 2026
Casper City Council has approved a $647,500 equipment agreement with Glasco UV for new ultraviolet disinfection equipment at the Sam H. Hobbs wastewater treatment plant. The procurement is part of a wider replacement programme intended to maintain regulatory-compliant disinfection before treated effluent reaches the North Platte River.
Key points
- Council approved the Glasco UV equipment agreement unanimously; the contract price is $647,500.
- Glasco’s 10-year evaluated cost was $977,957.48, including $330,457.48 in present-worth replacement-part and power costs; Trojan Technologies offered a lower $590,000 upfront price but a higher $1.081 million evaluated total.
- The plant serves about 70,000 people across Casper, Bar Nunn, Evansville, Mills, Natrona County International Airport and other regional-system entities.
- Equipment delivery is required within 30 weeks of signing, while the installation contract is scheduled for bidding in February 2027 and award in March.
Full report
Casper City Council has authorised the procurement of ultraviolet disinfection equipment from Glasco UV LLC for the Sam H. Hobbs Wastewater Treatment Plant, launching a key element of the utility’s replacement of ageing UV assets.
The unanimously approved agreement carries a contract price of $647,500 for open-channel UV equipment, including shop drawings, operating and maintenance documentation, installation checks, field testing and operator training. Glasco, based in Mahwah, New Jersey, must deliver the equipment within 30 weeks of signing the agreement.
The procurement is part of the plant’s wider UV disinfection-system replacement, for which the city has $3.6775 million budgeted for UV and other wastewater-treatment-plant equipment. The current system disinfects treated wastewater before discharge to the North Platte River and needs replacement to continue meeting state and federal requirements.
Casper evaluated bids using both capital cost and the present worth of replacement parts over 10 years. Glasco’s $647,500 base bid was higher than Trojan Technologies’ $590,000 offer, but Glasco’s evaluated total was lower: $977,957.48, against $1,080,780.72 for Trojan. Glasco’s evaluation figure included $330,457.48 for present-worth replacement-part and power costs. That amount is used for bid evaluation and is not part of the equipment contract price.
The selected system will comprise two UV channels, each with two banks, plus a system control centre. It is specified to treat peak flows of 24mgd and deliver a minimum UV dose of 30mJ/cm2 at peak design flow, including at end-of-lamp-life and fouled-sleeve conditions.
The supply agreement requires Glasco to coordinate with the city, engineer and future installation contractor, provide commissioning and testing support, calibrate the supplier-provided equipment and train plant staff. The supplier must also guarantee replacement-part availability and submitted pricing for at least 10 years.
HDR Engineering was hired in September 2025 to prepare a facility-wide master plan and design the UV replacement. The installation contract is scheduled to be bid in February 2027, with an award planned for March.
The Sam H. Hobbs plant serves approximately 70,000 people in Casper and the regional wastewater system, including Bar Nunn, Evansville, Mills and Natrona County International Airport.
This summary was generated by AI based on the source document and may contain errors.
Source: City Council, City of Casper Public Services Water and Sewer Utilities