As part of the contract, Jacobs will take the responsibility for the city’s water pollution control plant, collection system and related utilities from this month.

The company stated that the city considered several options after sewer overflows last year, which impacted the Naugatuck River and watershed. The contract is expected to save nearly $12.7m over its previous operating model.

Jacobs operations management and facilities services vice president Steve Meininger said: “Given Jacobs’ extensive operations and asset management experience, we plan to leverage our knowledge in these areas to help Waterbury manage its utilities effectively as equipment ages, regulations tighten and other challenges arise.

“Waterbury chose Jacobs because our proposed operating team assessed the city’s wastewater facilities and developed a whole-program approach to utility operations.”

The city will retain the ownership and the decision-making authority for its 27-million-gallon-per-day facility, sewer collection system and pumping equipment.

The company stated that its project approach is structured to monitor treatment processes and equipment closely, apply proactive maintenance practices and to train and support operations staff.

The operating plan will also include upgrades, treatment process adjustments and long-term facility planning.

Waterbury Mayor Neil O’Leary said: “The Naugatuck River is an environmental asset and a key element of our city’s identity and economy. We intend to do everything in our power to protect it.

“With this partnership, we are confident that the city is being put in the best possible position to prevent future incidents and keep our community water sources vibrant for years to come.”

Last month, US Department of Energy (DOE)  extended its contract with the company for environmental cleanup at the Columbia River and selected portions of the Hanford site.