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About Us

Indigo Water Group is Woman Owned Small Business Enterprise based in Littleton, Colorado.  We specialize in water and wastewater treatment projects and have been involved in numerous projects from planning through permitting and construction. 

Indigo Water Group focuses on services in key areas including utility planning, biological process and collection system modeling, regulatory assistance, comprehensive performance evaluations, process assistance and plant optimization, and operator training.  We have recently added contract operations for small wastewater systems to our list of services.

Sidney Innerebner, PhD, PE, CWP

Sidney has over twenty years of experience in environmental services including laboratory management, treatment plant operation, and water and wastewater design.  She has conducted training classes throughout her career beginning with chemistry and lab techniques at Rocky Flats.  She has served as an instructor at the Leadville Operators School, Fundamentals School, and Boulder Operators  School for many years.  Additionally, Sidney has been an invited guest lecturer at the Colorado School of Mines and Red Rocks Community College.

Sidney has a Ph.D in Environmental Science & Engineering from the Colorado School of Mines.  Her Ph.D research focussed on nitrifying biofilms.  She has expertise in planning, biochemical treatment processes, comprehensive performance evaluations, wastewater process modeling, laboratory operations, environmental assessments, environmental permitting and compliance, chemistry, and toxicology.  Sidney received the Analytical Merit Award 2000 for Colorado from the RMWEA.

Sidney began her career working as a chemist and managed laboratory operations at the Rocky Flats Environmental Technology Site for 5 years.  At Rocky Flats, she taught courses in chemistry, mathematics, and laboratory techniques.  She then worked at the Littleton/Englewood WWTP for 6.5 years, and has worked as an Environmental Scientist for 6 years.  As an Environmental Scientist, she contributed to Master Plan efforts for the Cities of Northglenn, Thornton, Brush, and Carbondale, Colorado.

Sidney is a Colorado certified A wastewater and A industrial treatment plant operator in Colorado.  She has developed numerous operations training programs and gives training classes and seminars across the United States.

• Principal/Owner

• 20+ Years Experience

• BS Chemistry

• BS Microbiology

• MS and PhD Environmental Science and Engineering

• Colorado A Wastewater Operator

• Colorado A Industrial Operator

• Professional Engineer in State of Colorado