Ambient Water Quality Tools

ATTAINS

ATTAINS provides information on the conditions of surface waters as reported by the states. Water quality assessment and Total Maximum Daily Loads (TMDL) information are required every two years under Clean Water Act Sections 305(b) and 303(d). Read more about ATTAINS.

BEACON 2.0

Beach Advisory and Closing Online Notification (BEACON) is a system that provides to the public a database of pollution occurrences for coastal recreation waters. It contains state-reported beach monitoring and notification data and is available online. Read more about BEACON 2.0.

National Listing of Fish Advisories (NLFA) Technical Maps

NLFA Technical Maps provides interactive mapping and search tools for viewing fish advisories and fish tissue sampling data. Read more about NLFA Technical Maps.

National Stormwater Calculator

National Stormwater Calculator estimates the annual amount of rainwater and frequency of runoff from a specific site based on local soil conditions, land cover, and historic rainfall records. Read more about National Stormwater Calculator.

Rainfall Erosivity Factor Calculator

The Rainfall Erosivity Factor Calculator determines if small construction projects can obtain a waiver from NPDES stormwater permitting. Read more about Rainfall Erosivity Factor Calculator.

Tools for Automated Analysis (TADA)

TADA encompasses an R package and series of easy to use R Shiny applications currently under development.  These tools are designed to help stakeholders more efficiently compile and evaluate Water Quality Portal (WQP) data collected from monitoring sites.  Read more about TADA and how to get involved.

Water Quality Exchange (WQX)

The WQX framework assists states, tribes and others to submit water quality monitoring data.  Read more about WQX.

Water Quality Portal (WQP)

The Water Quality Portal (WQP) is a mechanism for anyone, including the public, to retrieve water monitoring data from the Water Quality Exchange (WQX), which is the mechanism for data partners to submit water monitoring data to EPA. Read more about WQP.