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    Welcome to Terradex Inc.
    Since 2002
    protecting human health and the environment
    from soil and groundwater contamination applying innovative web technologies.
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    Terradex LandWatch
    When an environmental remedy leaves residuals in place
    and institutional and engineering controls protect the remedy
    LandWatch controls land activities that could breach the remedy.
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    Terradex Dig Clean
    Nationwide Dig Clean advises contractors
    about soil and groundwater contamination before they dig,
    which protects everyone’s health and protects underground clean-up remedies.
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    Terradex WhatsDown
    WhatsDown shows nearby soil contamination and groundwater contamination
    on your mobile device and where you stand.
    WhatsDown helps government agencies communicate complex environmental information.
Tools that Manage Contaminated Properties and Avert Future Exposure

Terradex provides long-term stewardship for contaminated properties. Businesses and government agencies use our web-based tools to continuously protect the health of workers and occupants, prevent further damage to the environment, control liability and maintain regulatory compliance. Test change.

Some clients use Terradex tools when residual contamination persists on their property especially when relying on institutional or engineering controls. Others use our tools to manage a sensitive habitat like a wetland, or to protect a pipeline from damage, and to safeguard against developments that would unearth contaminants. If a client can map it, then Terradex can monitor it.

Terradex’s web tools can be deployed to just one or to thousands of properties. You can read about numerous practical applications of our services on our blog. Please contact us for a demonstration of our services.

Our Services


LandWatch helps prevent activities that would expose people or the environment to greater risk from contaminated properties. The web-based application continuously monitors selected land activity occurring at or near monitoring zones. LandWatch alerts clients in time to control the risk before damage occurs. For more than ten years, large corporations and government agencies have used LandWatch to monitor and manage portfolios of properties. Learn More

Dig Clean

Dig Clean generates Environmental Safety Advisories to contractors when they plan to excavate near contaminated properties by proactively informing them with health and safety information, and it helps the state and the property owner avoid damage to underground cleanup structures or inadvertent contact with contamination. Dig Clean is now used nationwide. Learn More


WhatsDown communicates environmental risks to parties who need to know up-to-date information about known spill sites, institutional controls, or groundwater plumes prior to doing invasive work. Targeted to a utility company or city public works department, WhatsDown builds a health and safety advisory to give to fields teams prior being at work anywhere in the service area. Access the mobile app in the field, and the field team can find the same information. Learn More

Recent Blog Posts