Water is all we do
and we do it like no one else

In a world of generalists, a water specialist provides great value.
At Carollo, water is all we do.

This unwavering commitment to the water industry has been a hallmark of the company since our inception in 1933. Over the decades, this single-minded focus has allowed us to make some unique commitments to both clients and staff. It has opened the door to the very best talent in the water industry, innovative water solutions, unparalleled client service, and above all, a collaborative and collegial working environment that makes us a great company to work with.

The fact that this message is as relevant today as it was back in the 1930s is a reaffirmation of the core character and values of our company. The pressing challenges of today’s water industry require the concentrated focus provided by a specialist firm — one that is passionate about water and welcomes the obligation to get the most out of this precious resource.

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Carollo News

 Utah Valley Water Treatment Plant Improvement Project

Our legacy of award-winning projects continues, as the ACEC Utah branch selected Carollo's work on the Utah Valley Water Treatment Plant Improvement Project for the Engineering Excellence Honor Award!

The project restored the plant’s original 80 mgd capacity, delivered an additional 20 mgd at no cost, reduced disinfection byproducts, and improved performance despite tight site...

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The American Academy of Environmental Engineers and Scientists recently selected Carollo’s work on the (Denver) Metro Wastewater Reclamation District’s South Secondary Improvements Project for the AAEES National Design Grand Prize. Carollo’s “one plant” approach helped convert the existing Robert W. Hite Treatment Plant into the largest Biological Nutrient Removal plant in the country. The...

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Water is all we do… and now we do it online. For the past three years, Carollo’s Blue Plan-it® (BPI) decision support system has offered our engineers and clients a powerful one-of-a-kind tool for planning water and wastewater projects. Like most conventional software tools, the BPI desktop version requires license management, software installation, model setup training, and maintenance...

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Carollo Engineers has partnered with the San Diego Unified School District and the Biocom Institute Festival of Science and Engineering to promote Science, Technology, Engineering, Arts, and Mathematics (STEAM) education in local schools.

As part of the SDUSD six-week unit of study focusing on water education, Carollo produced this five-minute video of a young Carollo engineer taking us...

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The Design-Build Institute of America (DBIA) recently announced its 21st annual Design-Build Project/Team Award winners. Among the recipients was Carollo Engineers, winner of the National Award of Merit in the Water/Wastewater category for the Clifton (Colorado) Water District's Microfiltration/Ultrafiltration Water Treatment Plant Upgrade.

In 2014, the Clifton Water District selected...

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ENR Top Design Firm Cover

Carollo is very proud (and a little bit humbled) to have been selected by Engineering News-Record (ENR) as its 2016 California Design Firm of the Year. This is a huge honor, given not just the spread and size of the California market, but also the impressive list of engineering companies in the state. While we owe much of this honor to the hard work of our employees across the entire company,...

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FEATURED PROJECTS

City of West Sacramento, California

West Sac Bridge District Photo

The Bridge District Water Storage Facility project was required to meet the water demands for the new development of the City of West Sacramento’s Triangle Specific Plan, which envisioned the Bridge District as a dense, pedestrian-friendly, mixed-use area featuring office, residential, and commercial development that would transform the District into an extension of the urban fabric of downtown Sacramento, including extensive riverfront amenities. The facility consists of the major...

Orange County Sanitation District, California

Headworks Rendering

Carollo completed the Plant No. 2 Headworks Replacement Project for the Orange County Sanitation District (OCSD). The new headworks, currently in the construction phase, has a rated capacity of 340 mgd and an estimated construction cost of $192 million. Carollo began preliminary design of the project in the fall of 2001, and final commissioning of the project took place in early 2011. Demolition of existing facilities and modifications to the existing plant are being implemented and will be...

Ak-Chin Indian Community, Arizona

Ak-Chin Aerial

The Ak-Chin Indian Community established long-range goals for economic growth and development. This proposed development would severely overload the Community’s existing water and wastewater infrastructure. Consequently, Community leaders commissioned a Water and Wastewater Feasibility Study that identified a series of critical infrastructure and facility upgrades necessary to accommodate the proposed growth initiatives.

Carollo was selected to provide planning, design, and...

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Industry News

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Three Conservation Bills Advance to Assembly Floor; Two Held in Appropriation...
Friday, May 26, 2017 -- Water News
The Assembly Appropriations Committee passed three water conservation-related bills but held two others on May 26, the final day for fiscal committees to send bills to the floor. Two competing bills on urban water management planning advanced to the Assembly floor: AB 1654 (Rubio), which is activ... ..

Water Storage Investment Program Application Webinar Set for June 1
Friday, May 26, 2017 -- Water News
The California Water Commission is scheduled to host a webinar for potential applicants of the Water Storage Investment Program (WSIP) to discuss concepts and methods for monetizing ecosystem improvements and other public benefits of proposed water storage projects. The webinar will be held on Ju... ..

Stakeholders Weigh in on Draft Delta Plan Amendment on Conveyance, Storage
Thursday, May 25, 2017 -- Water News
Water managers, scientists, landowners and others weighed in on the Delta Stewardship Council's draft Delta Plan amendment on conveyance, storage and their joint operations during an informational hearing Thursday.  During the lengthy informational hearing, DSC staff outlined some of the... ..

State Water Board Hosts Seminar on Using Stormwater for Groundwater Recharge
Wednesday, May 24, 2017 -- Water News
The State Water Resources Control Board is scheduled to hold a free seminar May 30 that examines the use of stormwater for groundwater recharge. The seminar, called  Enhancing Groundwater Recharge with Stormwater , will explore how stormwater is increasingly viewed as an under-utilized resou... ..

Water Funding Holds Steady in Proposed FY 2018 Federal Budget
Wednesday, May 24, 2017 -- Water News
President Trump released his $4.1 trillion FY 2018 budget proposal on Tuesday, May 23. The proposed budget would reduce spending on non-defense domestic programs by $54 billion, including trimming 11% from the Department of Interior’s budget and cutting nearly one third of the Environmental... ..

New Video Highlights Importance of Bay-Delta Flows Policy
Monday, May 22, 2017 -- Water News
“A Defining Moment in California Water,” a new video highlighting the need for a more balanced and comprehensive approach to setting water quality objectives in the Bay-Delta watershed, is now available on ACWA’s website. read more ..

New NextGen Initiative Tools Available
Monday, May 22, 2017 -- Water News
A collection of new member tools aimed at assisting ACWA members with recruiting the next generation of water professionals is now available on ACWA’s website. read more ..

$86.3 Million Available for Groundwater Sustainability Plans and Projects
Wednesday, May 17, 2017 -- Water News
The California Department of Water Resources today announced the release of its 2017 Draft Proposal Solicitation Package for Groundwater Sustainability Plans and Projects which is a key step in the process of awarding $86.3 million for the plans and projects in fiscal year 2017-‘18. read more ..

Assembly Member Garcia Forms Bipartisan Working Group on Water Conservation L...
Wednesday, May 17, 2017 -- Water News
Assembly Water, Parks and Wildlife Committee Chair Eduardo Garcia (D-Coachella) has formed a bipartisan working group of legislators to address statewide water conservation policy and proposed legislation. read more ..

ACWA Testifies at Budget Subcommittee on Funding for Save Our Water, Long-Ter...
Tuesday, May 16, 2017 -- Water News
ACWA provided testimony Tuesday on funding requests for Save Our Water and long-term conservation in Gov. Jerry Brown’s revised state budget proposal, which was issued last week. read more ..

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Industry News

May 26 Three Conservation Bills Advance to Assembly Floor; Two Held in App...
The Assembly Appropriations Committee passed three water conservation-related bills but held two others on May 26, the final day for fiscal committees to send bills to the floor. Two competing bills on urban water management planning advanced to t...
May 26 Water Storage Investment Program Application Webinar Set for June 1
The California Water Commission is scheduled to host a webinar for potential applicants of the Water Storage Investment Program (WSIP) to discuss concepts and methods for monetizing ecosystem improvements and other public benefits of proposed wate...
May 25 Stakeholders Weigh in on Draft Delta Plan Amendment on Conveyance, ...
Water managers, scientists, landowners and others weighed in on the Delta Stewardship Council's draft Delta Plan amendment on conveyance, storage and their joint operations during an informational hearing Thursday.  During the lengthy inf...