Geren Island Water Treatment Plant Improvements
Geren Island | Water Supply
Water supply, treatment, and distribution improvements project.
Directory
Public engineering firm profile
Carollo Engineers, Inc.
Walnut Creek, CA
Working Wonders with Water
- Services
- 21
- Offices
- 1
- Projects
- 12
- Leaders
- 2
- Founded
- 1933
- Size Estimate
- 1,900+ employees
Overview
Carollo Engineers, Inc. is an environmental engineering consulting practice exclusively focused on water and wastewater solutions. Founded in 1933, it delivers engineering, planning, design, and construction services for drinking water, wastewater, water reuse, water resources, and stormwater infrastructure. The practice serves public utilities and municipal clients across North America, integrating advanced technologies, applied research, and digital decision support to optimize water resources.
- Founded
- 1933
- Size Estimate
- 1,900+ employees
Services
Water Infrastructure
Comprehensive planning, design, construction, and startup services for water utility assets.
Collaborative Delivery & Program Management
Alternative project delivery, management, and strategic advisory services to support successful program execution.
Operations & Digital Solutions
Innovative data management, performance analytics, and automated process control to optimize facility operations.
Applied Research & Development
Pioneering water science and technology development to bridge the gap between research and practical applications.
Industries
Firm type
Projects
El Paso Advanced Water Purification Facility
El Paso | Water Supply
Preliminary engineering, design, and permitting for an advanced water purification facility.
Coffee Creek Water Resource Recovery Facility Expansion
Edmond, OK | Wastewater
Facility expansion for water resource recovery.
Blue River Wastewater Treatment Plant Facility Plan and Improvements Design
Kansas City, MO | Wastewater
Comprehensive facility plan and improvements design.
Various Improvements to Strengthen Resilience and Redundancy for Draper Water Treatment Plant Storage
Oklahoma City, OK | Water Supply
Engineering improvements to increase storage resilience and redundancy.
Water Distribution System Nitrification Evaluation
Oklahoma City, OK | Water Supply
System-wide water distribution nitrification evaluation.
Ozark Point Water Treatment Plant Rehabilitation and Improvements
Little Rock, AR | Water Supply
Rehabilitation and facility improvements for the historic water treatment plant.
Blue River Wastewater Treatment Plant Biosolids Facility
Kansas City, MO | Wastewater
Design and engineering for a wastewater treatment biosolids facility.
Stoneridge PFAS Treatment Plant
2026 | Water Supply
PFAS treatment plant design and engineering that earned national acclaim from the American Council of Engineering Companies.
Northeast Water Purification Plant Expansion
Water Supply
Owner's advisor services for a major water purification plant expansion.
Swan Island CSO Pump Station Phase 1 and Phase 2 Projects
Swan Island | Wastewater
CSO pump station construction and engineering projects.
Design-Build of Wastewater Treatment Plant Sludge Thickening and Dewatering Buildings
Wastewater
Design-build of wastewater treatment plant sludge thickening and dewatering buildings.
Software
Credentials and affiliations
Awards
Leadership
Jeff Crowley
Program Manager
Crowley joined Carollo as a Program Manager, bringing extensive project and program management experience to major water initiatives.
Kiersten Wangsvick
Project Manager
Wangsvick serves as a Project Manager based in Tucson, managing regional water and wastewater engineering projects.