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

RUC logo

Miami, Florida – This week, Carollo Engineers, will be part of the 2018 inaugural summit hosted by the Resilient Utility Coalition (RUC). Carollo is also a Diamond sponsor of the event. The summit will take place on Thursday January 25 and Friday January 26, 2018. The...

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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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FEATURED PROJECTS

King County Dept. of Natural Resources and Parks, Washington

Admin Building

Lack of centralized sewage collection and treatment limited growth and prevented development plans within the City of Carnation. To enable the City to grow, it partnered with King County in Washington state to provide local wastewater treatment and selected Carollo to provide planning, design, and engineering for the Carnation Treatment Plant.

The City of Carnation is located in the Snoqualmie Valley near Snoqualmie River, which is home to spawning chinook and coho salmon (both listed...

City of Portland, Oregon

A 40-mgd UV reactor

To receive inactivation credit with UV disinfection, the USEPA requires that UV systems undergo validation testing. Before 2003, UV systems installed in the U.S. were validated either on site or at a facility in Europe. Recognizing a need for a U.S. facility, Carollo developed the Portland UV Disinfection Validation Facility in Portland, Oregon.

The facility is located near the groundwater pumping station of Portland’s South Shore Well Field. The wellfield can provide on demand up to...

City of Ashland, Oregon

The Ashland Wastewater Treatment Plant

Carollo has provided predesign, final design, and construction management for the City of Ashland’s Wastewater Treatment Plant Upgrade Project. Ashland originally master planned the improvements as a threephase, seven-year project with a total cost of $27.1 million. The project addresses the immediate needs of the plant, regulatory compliance to meet total maximum daily loads (TMDL) limits, and community growth.

During predesign, Carollo was able to identify changes to the original...

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Industry News

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EPA provides $485,000 to improve water infrastructure in Bartlett, Illinois
Wednesday, January 10, 2018 -- EPA News Releases
CHICAGO − (January 11, 2018) The U.S. Environmental Protection Agency has awarded a one-time $485,000 Special Appropriation Act Program grant to the Village of Bartlett, Ill., to help finance water infrastructure projects. ..

U.S. EPA awards $2.1 million to protect, restore California wetlands and streams
Tuesday, January 9, 2018 -- EPA News Releases
SAN FRANCISCO – The U.S. Environmental Protection Agency has awarded more than $2.1 million in grants to protect and restore wetlands and streams across California. ..

ICYMI: THE DAILY STAR: Area officials laud Lopez's role in DEP negotiations
Monday, January 8, 2018 -- EPA News Releases
(New York, N.Y.) THE DAILY STAR By Cheryl Petersen January 4, 2018 ..

EPA Awards $760,000 to Iowa State University for Research to Improve Water Qu...
Wednesday, January 3, 2018 -- EPA News Releases
Environmental News FOR IMMEDIATE RELEASE ..

EPA awards $681,343 to Ohio State University for research to improve water qu...
Wednesday, January 3, 2018 -- EPA News Releases
CHICAGO (January 4, 2018) – The U.S. Environmental Protection Agency has awarded $681,343 to The Ohio State University in Columbus, Ohio, for innovative research on the prediction, prevention, control and mitigation of freshwater harmful algal blooms. ..

U.S. EPA, American Samoa reach revised settlement with Starkist
Monday, December 25, 2017 -- EPA News Releases
WASHINGTON – The U.S. Department of Justice and the U.S. Environmental Protection Agency (EPA) have reached a revised $6.5 million settlement with StarKist Co. ..

FEDERAL-STATE SETTLEMENT WITH CITY OF LANCASTER, PA. TO CURB DISCHARGE OF SEW...
Tuesday, December 19, 2017 -- EPA News Releases
Contact: David Sternberg 215-814-5548 sternberg.david@epa,gov FEDERAL-STATE SETTLEMENT WITH CITY OF LANCASTER, PA. TO CURB DISCHARGE OF SEWAGE AND OTHER POLLUTANTS TO CONESTOGA RIVER ..

Actualización de la EPA sobre el Huracán María del 18 de diciembre del 2017
Sunday, December 17, 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 otras agencias federales y nuestros socios del Estado Libre Asociado, de territorios y locales. ..

EPA Launches Second Phase of Technology Challenge for an Advanced Septic Syst...
Thursday, December 14, 2017 -- EPA News Releases
BOSTON - Today, the U.S. EPA and its partners announced the second phase of a technology challenge for an advanced septic system nitrogen sensor. The goal of this challenge is to inspire innovators to develop a sensor to monitor nitrogen discharged from advanced septic systems. ..

EPA Awards $3.7 Million to Pennsylvania for Chesapeake Bay Restoration
Wednesday, December 13, 2017 -- EPA News Releases
PHILADELPHIA (December 14, 2017) The U.S. ..

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Industry News

Jan 10 EPA provides $485,000 to improve water infrastructure in Bartlett, ...
CHICAGO − (January 11, 2018) The U.S. Environmental Protection Agency has awarded a one-time $485,000 Special Appropriation Act Program grant to the Village of Bartlett, Ill., to help finance water infrastructure projects.
Jan 9 U.S. EPA awards $2.1 million to protect, restore California wetland...
SAN FRANCISCO – The U.S. Environmental Protection Agency has awarded more than $2.1 million in grants to protect and restore wetlands and streams across California.
Jan 8 ICYMI: THE DAILY STAR: Area officials laud Lopez's role in DEP...
(New York, N.Y.) THE DAILY STAR By Cheryl Petersen January 4, 2018