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

Chao-an Chiu with the 2017 Software & Technology Innovation Award

​We would like to congratulate Carollo’s Blue Plan-it® Team, especially Chao-an Chiu (pictured) and Charlie He, for winning the 2017 Software & Technology Innovation Award, given by Corporate Vision Magazine. This is an exceptional achievement, since that Carollo is really not a software company.  Getting the call from London with news of the award was an exciting moment for our Blue Plan-...

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 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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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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FEATURED PROJECTS

City of Springfield, Missouri

Springfield’s Northwest Wastewater Treatment Plant

Carollo provided final design services for an expansion of the City of Springfield’s Northwest Wastewater Treatment Plant to 9.5 mgd. Facilities included peak flow retention basin improvements, new submersible influent pumps, a new grit removal facility, screenings modifications, selector basin, aeration basin improvements, secondary clarification improvements, ultraviolet (UV) disinfection, odor control, and other related appurtenances.

As part of the preliminary design process,...

City of Dallas, Texas

Southside Wastewater Treatment Plant

Carollo, as a major subconsultant to an instrumentation and control engineering firm, is providing a process control system expansion design for the City of Dallas' 110-mgd Southside Wastewater Treatment Plant. The City of Dallas Water Utilities has been working for some time towards the goal of providing process automation at the Southside plant. The top-end, computer central control system replacement, along with work in progress on selected process improvements, provides the foundation...

City of Olathe, Kansas

Olathe WTP No 2

Water Treatment Plant No. 1 is a surface water treatment plant with a capacity of 4 mgd. Water Treatment Plant No. 2 treats groundwater under the influence of surface water and has a capacity of 17 mgd.

The City of Olathe maximum day water demands have significantly increased over the past eight years from 15.6 mgd in 1996 to over 27 mgd in 2003. This rapid change in demand has prompted the City to contract with Carollo to verify the City’s future demand projections, examine the...

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Industry News

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Actualización de la EPA sobre el Huracán María del 22 de noviembre
Tuesday, November 21, 2017 -- EPA News Releases
WASHINGTON – La Agencia de Protección Ambiental (EPA, por sus siglas en inglés) de los EE.UU. continúa su respuesta ante los Huracanes Irma y María en estrecha coordinación con socios federales, del Estado Libre Asociado, de territorios y locales. ..

EPA backs North Dakota’s plan to improve water quality with $14.7 million in ...
Monday, November 20, 2017 -- EPA News Releases
DENVER (Nov. 21, 2017) - The U.S. ..

EPA Awards Nearly $4.4 Million to Restore Lake Champlain and Protect Against ...
Sunday, November 19, 2017 -- EPA News Releases
BOSTON, MASS. / NEW YORK, N.Y. – The U.S. Environmental Protection Agency has awarded $4,395,000 in Lake Champlain restoration funding to help address outbreaks of harmful algal blooms and the spread of invasive species in Lake Champlain. The funding was awarded to: ..

$1.29 Million Awarded in Grants to Improve the Health and Ecosystem of Long I...
Wednesday, November 15, 2017 -- EPA News Releases
Stratford Point, CT – Today, top federal and state environmental officials announced 20 grants totaling $1.29 million to local government and community groups to improve the health and ecosystem of Long Island Sound. Eighteen projects, totaling $1.2 million benefit Connecticut. ..

EPA and the Army Propose to Amend the Effective Date of the 2015 Rule Definin...
Wednesday, November 15, 2017 -- EPA News Releases
WASHINGTON (November 16, 2017) – The U.S. Environmental Protection Agency (EPA) and U.S. ..

EPA Awards Buzzards Bay and Mass. Bay with Funding to Improve Water Quality
Wednesday, November 15, 2017 -- EPA News Releases
BOSTON - The U.S. Environmental Protection Agency recently awarded more than $1.2 million to protect and enhance the health of two Massachusetts estuaries. ..

EPA Awards $12.3 Million to State of Iowa for Critical Water Projects
Monday, November 13, 2017 -- EPA News Releases
Environmental News FOR IMMEDIATE RELEASE ..

EPA Awards $52,000 to West Virginia for Water Monitoring
Sunday, November 12, 2017 -- EPA News Releases
PHILADELPHIA (November 13, 2017) The U.S. ..

EPA Seeks Comment on Gunnison Copper Project Proposed Permit
Sunday, November 12, 2017 -- EPA News Releases
SAN FRANCISCO – The U.S. Environmental Protection Agency is seeking public comment on a draft Underground Injection Control (UIC) permit and aquifer exemption for Excelsior Mining Arizona, Inc. ..

EPA Recognizes Queen Anne’s County, Maryland for Excellence and Innovation in...
Tuesday, November 7, 2017 -- EPA News Releases
Contact: David Sternberg (215) 814-5548 sternberg.david@epa.gov EPA Recognizes Queen Anne’s County, Maryland for Excellence and Innovation in Clean Water Infrastructure ..

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Industry News

Nov 21 Actualización de la EPA sobre el Huracán María del 22 de noviembre
WASHINGTON – La Agencia de Protección Ambiental (EPA, por sus siglas en inglés) de los EE.UU. continúa su respuesta ante los Huracanes Irma y María en estrecha coordinación con socios federales, del Estado Libre Asociado, de territorios y locales.
Nov 20 EPA backs North Dakota’s plan to improve water quality with $14.7 m...
DENVER (Nov. 21, 2017) - The U.S.
Nov 19 EPA Awards Nearly $4.4 Million to Restore Lake Champlain and Protec...
BOSTON, MASS. / NEW YORK, N.Y. – The U.S. Environmental Protection Agency has awarded $4,395,000 in Lake Champlain restoration funding to help address outbreaks of harmful algal blooms and the spread of invasive species in Lake Champlain. The fund...