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Our Story

The challenges have changed. So have we.

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Innovation

Seeing the full system and improving it.

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Our commitments

Driving long-term value through responsible delivery.

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Explore our locations across the U.S., Canada and Australia.

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Featured Solutions

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Emergency Response

Building readiness for decisive environmental action.

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Stack Testing

Accurate, EPA-compliant stack testing for industrial facilities.

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Leak Detection

Managing fugitive emissions in complex industrial facilities.

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Our Thinking Spotlight

The Onterris Outlook Report
NEW REPORT

The Onterris Outlook: Why Environmental Performance Is Business-Critical

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BRIEF

Federal Methane Rules in 2026: What Oil and Gas Operators Need to Do Now

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PERSPECTIVE

CCL 6 Is a Signal, Not a Standard. Why a Science-Forward Strategy Matters Now

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BRIEF

HON MACT Fenceline Monitoring Requirements

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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.
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Access deep environmental expertise tailored to your industry, with solutions built for real-world conditions.
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Prepare for escalating environmental risks with expert solutions designed to perform under pressure.
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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.
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Where brilliant people come together to turn environmental science into real-world progress for communities, industry and the planet.
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Solutions Treatment Technologies Short & Ultra-Short PFAS Removal

Short & Ultra-Short PFAS Removal

Addressing the PFAS compounds that conventional treatment leaves behind
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INTRO

Optimizing PFAS treatment for complex water conditions

Treating Per- and polyfluoroalkyl substances (PFAS) rarely comes down to a single technology. In difficult water matrices, treatment performance depends on surrounding chemistry, co-contaminants, variable loading and downstream waste considerations as much as PFAS removal itself. Onterris helps clients evaluate, test and deploy integrated treatment strategies that support reliable field performance, including for short-chain and ultra-short-chain PFAS.
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Supporting Your Industry

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

Chemical

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Emerging Contaminants

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Energy

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Government

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Manufacturing

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Mining & Minerals

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Solid Waste

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why it matters

Why complex PFAS treatment demands integrated thinking

  • Remove difficult PFAS more effectively
  • Reduce waste, cost and operator burden
  • Build confidence from pilot to full-scale deployment
  • Strengthen treatment performance across changing water conditions

Advancing treatment strategies for difficult PFAS conditions

Onterris helps organizations move beyond one-dimensional treatment decisions by combining testing, process engineering and deployable treatment technologies into practical treatment trains shaped around site conditions, treatment targets and long-term operating realities.
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Our Capabilities

Integrated capabilities for difficult PFAS and co-contaminant treatment

Treatability studies and comparative option screening
Bench-scale testing and RSSCT
On-site pilot testing and demonstration
Regenerable ion exchange for PFAS removal and concentration
Short-chain and ultra-short-chain PFAS treatment evaluation
Foam fractionation for high-strength and difficult waters
Integrated pretreatment, primary treatment and polishing trains
Modular and mobile deployment options

Related Solutions

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Water Consulting, Testing & Treatment

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Natural Resources

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Testing & Analysis

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Explore Related Insights

Employees collecting water samples in a stream.
Brief
3 min read
David R. Blye, CEAC

Understanding TFA: The Ultra-Short-Chain PFAS Environmental Leaders Should Watch

A fast-moving contaminant gaining scientific and regulatory focus
Read More
Environmental field teams coordinating site investigations and sample collection in remote locations.
Case study
2 min read

Protecting Drinking Water for Pender County: Turning PFAS Uncertainty Into a Long-Term Plan

Creating a reliable testing and treatment roadmap that supports capital planning for long-term safe drinking water
Read More
Close-up shot of water bubbles
Article
4 min read
Dave Kempisty, PhD, PE

Industrial PFAS Treatment: From Pilot to Full Scale

Learn how industrial operators can characterize PFAS, pilot treatment technologies and scale solutions for complex wastewater and short-chain PFAS.
Read More