Data and Tools

CHA467

Chiricahua National Monument (CHA467) CASTNET site location,

CDZ171

Cedar Creek (CDR119) CASTNET site location,

CAV436

Carlsbad Caverns National Park (CAV436) CASTNET site location,

CAN407

Canyonlands National Park (CAN407) CASTNET site location,

2017 Draft Aquatic Life Criteria for Aluminum in Freshwater

EPA has released draft updated aluminum aquatic life ambient water quality criteria for freshwater under Section 304(a)(1) of the Clean Water Act. EPA will accept public comments on the draft criteria for 60 days upon publication in the Federal Register.

National Recommended Water Quality Criteria Tables

This water quality criteria table has all current national recommended water quality criteria and links to relevant documents

Water Filter Education Handouts

EPA and its partners have developed educational resources to help community members properly use and maintain water filters, including a toolkit and handouts.

CGEM Example Files

Example files are available to facilitate user familiarity with CGEM model setup.

CGEM Documentation

User guides and model theory documentation.

Citing CGEM

CGEM citings

CGEM Release Notes

CGEM release notes

CGEM Download

CGEM Installers are provided. You will need to have knowledge on how to install software on your target operating system.

EPA’s Recommended Ambient Water Quality Criteria for Nutrients

2023 Appendix W Proposed Rule

On October 12, 2023, the Administrator signed a propose rule that revises the Guideline on Air Quality Models. This webpage provides the background material related to this proposed rule for stakeholder reference.

BWR139

Blackwater NWR (BWR139) CASTNET site location,

BUF603

Buffalo (BUF603) CASTNET site location,

BBE401

Big Bend NP (BBE401) CASTNET site location,

Faster, Cheaper, Greener Webcast Series

Listing of Faster Cheaper Greener Webcast Series

ASH135

Ashland (ASH135) CASTNET site location,

ALH157

Alhambra (ALH157) CASTNET site location,