Learn the Issues

Alternative Measurement Protocols for Biogas and Renewable Natural Gas

This page posts for public availability the approved alternative measurement protocols under the biogas regulatory reform provisions.

Grant Funding to Address Indoor Air Pollution at Schools

Grants to monitor and reduce air pollutants at schools in low-income and disadvantaged communities.

Learn About Indoor Air Quality in Tribes

Indoor air quality (IAQ) is a term used to describe the level of air pollution in homes and other indoor spaces. Indoor air pollutants are chemical, physical, or biological pollutants.

Why Indoor Air Quality is Important to Schools

Basic information for IAQ and schools: why it's important, what you can do, EPA and federal partners, national organizations, and resources

How big a problem is poor indoor air quality (IAQ) in schools?

Indoor levels of some air pollutants can be two to five times higher (and occasionally 100 times higher) than outdoor levels. Nearly 56 million people (approximately 20 percent of the U.S. population) spend their days inside elementary and secondary schools. In 1999, the National Center for Education Statistics of the…

Last published: September 24, 2025

EPA Response to RFR 21005A - Chloroprene

The Agency's response to RFR 21005A Chloroprene.

Impaired Waters and TMDLs in Region 8

This is a list of programs and contacts related to TMDL programs in EPA Region 8 states

2025 SmartWay Tool Due Date Schedule (Text Only)

This page has text for an infographic that's for 2025 SmartWay Tool Due Date Schedule.

Technical Studies

Research and applied science on a range of technical issues relevant to the federal lead program.

Surface Water Treatment Rules Training

Surface Water Treatment Rules Training - Presented by Jake Crosby at the WWQ-PCA Conference held in October of 2023.

PRIA Updates

PRIA updates

Battery Collection in Action Case Study: The Lead-Acid Battery Collection Network

Learn the type of management tools you can use for assessment is sustainable electronics.

Battery Collection in Action Case Study: Sparking Awareness for Battery Fire Prevention in Larimer County, Colorado

Learn the type of management tools you can use for assessment is sustainable electronics.

Interpretive Guidance for the Real Estate Community on the Requirements for Disclosure of Information Concerning Lead-Based Paint in Housing

This final rule requires persons selling or leasing most residential housing built before 1978 to provide purchasers and renters with a federally approved lead hazard information pamphlet.