NPN Environmental Engineers, Inc.

What They Do

MoldBiohazardLead Paint

• Brownfields & voluntary remediation
• Clean air act services
• Environmental due diligence
• Facility energy management
• Hazardous waste & superfund
• Landfill design
• Material recovery facilities
• Resource planning
• Solid waste planning
• Storage tanks & spill prevention
• Water quality monitoring
• Above Ground And Underground Storage
• Air Monitoring
• Air Permitting
• Air Pollution
• Brownfield Programs
• Business Development
• Cleaning Equipment
• Clearance Testing
• Complete Environmental Management
• Compliance Programs
• Compliance Reviews
• Compliance Status Report
• Confined Space Entry
• Construction Oversight
• Container Management
• Continuous Monitoring
• Contracting Services

Before You Call NPN Environmental Engineers, Inc.

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. Are your technicians trained in bloodborne pathogen safety?
4. How do you dispose of the waste, and will you give me a disposal record?
5. Is your firm certified under the federal lead renovation rule?

Missouri has no statewide general contractor license, so check with your city or county, and in Illinois ask a roofer for a state roofing license. Also ask for proof of insurance and industry certification for the restoration crew.

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 proTrauma and Unattended Death Cleanup, What Families Should KnowA gentle guide for families after a death or injury at home. What you do not have to do yourself, how cleanup works, who pays, and how to choose a crew.
• DIY with careLead Paint in Homes Built Before 1978What lead paint means in a home built before 1978. Who is most at risk, how to test, what the EPA RRP rule requires, and which practices are banned.
• 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.