Who We Are
Onterris is a global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect.
Sectors
Access deep environmental expertise tailored to your industry, with solutions built for real-world conditions.
Solutions
Prepare for escalating environmental risks with expert solutions designed to perform under pressure.
Our Thinking
Explore briefs, perspectives and articles that turn insight into action. Discover thought leadership that informs decisions and drives impact. See the ideas shaping environmental solutions and guiding your next move.
Cuture & Careers
Where brilliant people come together to turn environmental science into real-world progress for communities, industry and the planet.

Water Consulting, Testing & Treatment

Managing systems that operate under pressure
Industrial water treatment facility with filtration infrastructure.
Aerial view of clear blue river winding through dense green forest landscape
INTRO

Water can make or break performance

Water influences how infrastructure performs, how industries operate and how development progresses. Surface water and groundwater systems interact with land use, climate pressures and industrial activity in ways that directly affect risk, compliance and long-term sustainability. Integrated water consulting, testing and treatment expertise helps organizations understand these interactions and act with confidence.

Because water challenges are deeply interconnected, our specialists draw on scientific and engineering expertise, modeling and advanced testing and treatment systems designed to support responsible management of water resources. We help organizations strengthen compliance, reduce risk and produce resilient designs that protect this vital natural asset for communities and industries that rely on it.

Guided by laboratory analysis, scientific rigor and pragmatic engineering, we provide the insight and assurance needed to manage how water and human activity interact.

Supporting Your Industry

Water challenges vary across sectors and geographies, and our experts help identify the right solutions for your specific needs
Why it matters

Disruption flows across entire systems

Water-related disruption rarely stays contained. Changes in flow, quality or availability can move quickly through interconnected systems, affecting infrastructure performance, operational stability and environmental outcomes. What begins as a localized issue can escalate into broader system-wide challenges.

Urbanization, climate variability, aging infrastructure and changing land use are altering how water moves and behaves. These pressures increase the likelihood of flooding, scarcity, contamination and regulatory disruption, while making system performance harder to predict.

Understanding how surface water, groundwater, stormwater and wastewater systems interact is essential to identifying vulnerabilities and managing these risks.

At the same time, emerging contaminants such as per- and polyfluoroalkyl substances (PFAS) require advanced treatment approaches and precise system integration. Organizations need partners who understand the complexities of water infrastructure and who can integrate advanced treatment into broader systems and stakeholder objectives.

With the right partner focused on integrating environmental water solutions, organizations can anticipate disruption, reduce risk and maintain performance across increasingly complex water systems.
Field engineers collaborating to optimize environmental and operational system performance
Environmental sampling and testing supporting accurate site characterization and compliance.
Infrastructure and watershed assessments supporting resilient environmental planning and restoration

Proven performance across complex water systems

Stabilized stormwater systems across major infrastructure programs

Reduced flood risk through catchment and flow modeling

Resolved groundwater contamination across complex industrial sites

Delivered advanced PFAS treatment within existing drinking water and wastewater infrastructure

Improved water quality compliance across multi-site operations

Enabled resilient water systems for reuse

Water Consulting, Testing & Treatment Solutions

Environmental engineer overseeing industrial treatment systems, operational compliance, and PFAS remediation technologies.

Treatment Technologies

Treatment systems designed, built, installed and operated for PFAS and other complex contaminants
Circular clarifier tank at a wastewater treatment facility with clean water and mechanical equipment under clear sky.

Water Consulting

Onterris helps organizations better plan, maintain compliance and build resilient operations through a deeper understanding of water systems.
Laboratory scientist examining a liquid sample in a beaker during chemical analysis.

Environmental Laboratory Services

Environmental decisions depend on laboratory data that holds up under scrutiny.

Built to perform under pressure

We combine scientific insight, system understanding and practical delivery to help organizations manage water complexity and implement solutions that perform reliably for the long-term.
Person refilling reusable water bottle at public drinking fountain with flowing water outdoors

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