Data and Tools

Exceptional Events Documents Ozone - Maryland

Proposed National Priorities List (NPL) Sites - by State

Provides maps and information about sites proposed to the NPL by state, region, and site.

National Priorities List (NPL) Sites - by State

View the National Priorities List (NPL), organized by state. Use the interactive map to select a state or territory.

HSCTM2D

Hydrodynamic, Sediment, and Contaminant Transport Model, a finite element modeling system for simulating two-dimensional, vertically-integrated, surface water flow

HSCTM2D Release Notes

Release notes for Hydrodynamic, Sediment, and Contaminant Transport Model, a finite element modeling system for simulating two-dimensional, vertically-integrated, surface water flow

A Exercise in Using PEST to Calibrate a Groundwater Model

Exercise to gain experience in using the comprehensive model postprocessing functionality available through Time Series PROCessor (TSPROC) & PEST in calibrating a HSPF model.

EPA maintains a variety of equipment to respond to hazardous substance emergencies such as releases or oil spills regardless of their nature, size, or location. This include ASPECT, PHILIS, Equipment Module (EM), and personal protective equipment.

The Geography of WATERS

WATERS Geography

Analysis of the Final Repeal of the Mercury and Air Toxics Standards Amendments

IPM analyses of the Proposed MATS Risk and Technology Review (RTR)

2025 Reference Case

This area provides information and documentation on EPA’s power sector modeling platform v6, including the associated input data and modeling assumptions, outputs, and documentation.

Watershed Index Online

A comparative analysis tool for comparing watershed characteristics within user-defined geographic areas to support their strategic planning decisions.

Ambient Water Quality Monitoring System

This page describes what the ambient water quality monitoring system is, how it functions, and what a user can do with it.

Support for STOrage and RETrieval and Water Quality Exchange Data Owners

This page contains numerous resources relevant to STORET and WQX data owners.

User's Manual for CORMX

This user’s manual gives a comprehensive description of CORMIX system and includes guidance on multiple facets of the system.

Shell Deer Park Spreadsheet

This is the spreadsheet to the shell deer park consent decree appendix 2.4

CIMC - How to Download Data

This page explains how to use Cleanups in My Community to download data into a spreadsheet format.

About the Automotive Trends Data

About the data for the light-duty vehicle carbon dioxide and fuel economy trends report.

Explore the Automotive Trends Data

Explore and download summary data with interactive figures and tables for the automotive trends report.

Data for the Automotive Trends Report

Data for the light-duty vehicles, including EPA's criteria pollutant and GHG standards.

Download the Automotive Trends Report

Download the light-duty vehicle carbon dioxide and fuel economy trends report.