Who We Are

Moving Environmental Practice Beyond What We Can See.

PEPN™ brings environmental assessment, intervention, verification, professional education, and accountability into a unified framework focused on reducing biologically relevant environmental exposure within the built environment.

Understand • Reduce • Verify
PEPN environmental health, science, healthier environments, professional collaboration, research and measurable environmental outcomes.
Human health, building science, healthier indoor environments, and the relationship between people and the built environment.
People • Buildings • Environment
Why PEPN Exists

Behind Every Environmental Problem Is a Human Story.

Buildings are more than structures. They are the environments where people live, work, recover, learn, and spend much of their lives.

When environmental concerns arise, correcting damaged materials is important — but PEPN believes the process should not end there.

Environmental investigation should connect what is observed in the building with defined corrective actions and a process for evaluating what changed afterward.

Was the source addressed? Were relevant reservoirs and exposure pathways reduced? And can improvement be objectively evaluated?
A Connected Environmental Process

PEPN Connects the Pieces.

Environmental problems are rarely solved by a single measurement, service, or intervention. PEPN connects assessment, characterization, source removal, environmental cleaning, verification, and long-term environmental control.

01

Assess

Evaluate the building, environmental conditions, occupant concerns, moisture history, HVAC systems, and potential exposure pathways.

02

Characterize

Use observations, measurements, sampling, and supporting data to better understand environmental conditions and relevant reservoirs.

03

Source Removal

Remove or correct identified environmental sources, damaged materials, moisture conditions, and building defects contributing to environmental exposure.

04

Clean

Address residual particulate and environmental reservoirs through appropriate cleaning, HVAC work, and source-control measures.

05

Verify

Use defined post-intervention observations and measurements to evaluate whether environmental conditions improved.

06

Stabilize

Support long-term environmental control through moisture management, filtration, maintenance, ventilation, and continued monitoring where appropriate.

PEPN-HEART™

A Framework Designed to Close the Environmental Loop.

PEPN-HEART™ organizes environmental work around a connected process that moves from investigation through source removal, environmental cleaning, and objective verification.

01
Assess
02
Characterize
03
Source Removal
04
Clean
05
Verify
06
Stabilize
The objective is not simply to identify an environmental problem. The process continues through source removal, environmental cleaning, and verification so that environmental improvement can be evaluated.
Professional Ecosystem

Different Disciplines. A Common Environmental Language.

PEPN supports collaboration while preserving the independent scope and professional responsibilities of each discipline.

01

Environmental Professionals

Professionals involved in environmental assessment, building investigation, characterization, measurement, and verification.

02

Intervention Professionals

Professionals involved in remediation, decontamination, cleaning, HVAC services, construction, and corrective building work.

03

Healthcare Professionals

Independent licensed healthcare professionals who evaluate, diagnose, and manage their patients within their professional scope of practice.

Clear professional boundaries matter. PEPN does not diagnose illness or determine whether a building caused a medical condition. Healthcare professionals evaluate and manage patients. Environmental professionals investigate and manage buildings. PEPN provides a common environmental framework that can help these disciplines communicate more effectively.
Scientific Foundation

Opinions Are Everywhere. Know the Published Science.

PEPN advances a science-aligned approach integrating environmental investigation, building science, exposure pathways, measurement, intervention, and verification.

The objective is to move environmental decision-making toward defined processes, measurable information, documented actions, and outcomes that can be evaluated.

Environmental research, building science, governance, standards development and professional accountability.
Governance Research Alliance

Governance Built for Accountability.

PEPN's governance model is designed to support the continued development of environmental standards, professional accountability, research alignment, and measurable environmental outcomes.

The Governance Research Alliance supports a structure intended to separate governance and standards development from individual service-provider interests.

01
Governance
02
Research
03
Accountability
Understanding the Structure

One Ecosystem. Distinct Roles.

Organization

PEPN™

The Purified Environments Provider Network brings professionals, standards, education, governance, and environmental practice into a connected professional ecosystem.

Environmental Framework

PEPN-HEART™

The environmental framework connecting assessment, characterization, source removal, environmental cleaning, verification, and long-term environmental stabilization.

Professional Certification

MICRO™ CEEP™

Professional education and certification supporting environmental exposure principles, building investigation, intervention, and verification.

Move Forward

A Higher Standard for Environmental Practice.

Whether you are looking for a PEPN professional or seeking advanced professional education, explore the growing PEPN ecosystem.

Find a PEPN Professional → Explore Professional Training →