Onterris

What They Do

MoldMold Testing

• Assessment And Restoration
• Crisis Management
• Cumulative Impact Analysis
• Data Collection
• Data Management
• Emergency Response Plans
• Emergency Response Program
• Emergency Restoration
• Environmental Analysis
• Environmental Impact Assessments
• Environmental Monitoring
• Environmental Response
• Environmental Sampling
• Exposure Risk Assessments
• Fire Investigations
• Health Consulting
• Health Impact Assessments
• Human Health Risk Assessment
• Incident Management
• Industrial Hygiene And Safety
• Industrial Hygiene Consulting
• Management Plans
• Medical Consulting
• Mitigation Planning
• Mold Assessments
• Natural Resource Damage Assessments
• Operations Support
• Program Development

In Their Own Words

CTEH® (Center for Toxicology and Environmental Health), a recognized leader in toxicology, environmental health, and emergency response, is now Onterris. While the name has changed, the team, expertise, and services remain the same. Organizations continue to rely on the same trusted experts for high-stakes environmental and public health challenges, now operating under the Onterris name. For decades, CTEH has been trusted to solve complex problems that cannot wait, and to help prevent them before they happen. That mission continues through Onterris, with expanded capabilities across science, engineering, and data-driven environmental solutions.

Written by the business on its public profile. We have not verified these claims.

Before You Call Onterris

1. Where do you think the moisture is coming from, and who fixes it?
2. Will you set up containment and negative air, and how will you protect the rest of the home?
3. Do you also do remediation? If so, who checks your work?
4. How many air samples will you take, and will you take an outdoor control sample?

For mold jobs of 25 contiguous square feet or more, ask for a Texas mold remediation contractor license and look it up with the Texas Department of Licensing and Regulation. Also ask for proof of insurance and industry certification for the technicians.

How Their Reviews Break Down

Counts from public listings as of September 23, 2026. A handful of reviews says less than a few hundred.

Read This While You Wait

• DIY with careSafe DIY Mold Cleanup for Areas Under 10 Square FeetA step by step method to clean up mold under 10 square feet safely, with the gear to buy, what to throw away, why bleach is not the default, and when to stop.
• Call a proMold Testing, When It Is Worth It and How to Read a Lab ReportWhen a mold test is worth paying for, which kind to ask for, why store kits mislead, and how to read spore counts, outdoor controls and a lab report yourself.
• DIY with careAttic Mold on Roof Sheathing, Causes and FixesWhy mold grows on attic roof sheathing, how to find the cause, the fixes that stop it for good, and how to tell a cosmetic stain from a roof that needs work.
• DIY friendlyBathroom Mold on Grout and Caulk, and How to Stop It Coming BackHow to clean mold from shower grout, caulk and ceilings, when to replace caulk instead of scrubbing it, and the fan habits that keep it from coming back.