Data and Tools

Survey 123 Templates for Regional SDAMs

Survey 123 templates support the collection of field data for the Regional SDAMs. Users with a Survey123 license may download these templates to create their own electronic forms for Regional SDAM data collection, if desired.

Development of the Regional SDAMs

Multi-year studies were done to develop rapid regionally specific SDAMs for use across the coterminous U.S. Hydrologic, geomorphic and biological indicators collected at stream reaches with known hydrology or paired with direct collection of hydro data.

Narrative Water Quality Criteria Related to Trash and Plastics

To address the public health problem of trash in our waterways, it is important to first identify and adopt trash criteria and then identify a way to implement such criteria in an effective manner.

Nitrate Rule - Maximum Contaminant Level (MCL) – Public Notification Template

Tier 1 PN Templates for Community and Non-transient Non-community Water Systems to be used when a PWS exceeds the MCL for Nitrate contamination.

Nitrate Rule - Failure To Monitor (FTM) - Public Notification Template

Tier 3 PN Templates for Community and Non-transient Non-community Water Systems to be used to notify customers of a Failure to Monitor (FTM) for Nitrate concentrations.

DfE-Certified Disinfectants

Office of Pesticides Programs

Region 8 NPDES Drinking Water General Permit

The Region 8 NPDES Drinking Water General Permit was finalized and public noticed in the Federal Register on April 17, 2019. The final permits are effective as of July 31, 2019.

Unacceptable and Acceptable Substitutes Tables

Landing page for substitute tables.

National Recommended Water Quality Criteria Tables

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

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.