ICIS-NPDES Search User Guide

This guide explains how to use the ICIS-NPDES Search in Envirofacts to find facilities and permit information regulated under the National Pollutant Discharge Elimination System (NPDES).

The search lets you filter by facility identifiers, geography, industry classification, parameters, and dates. You can combine multiple filters to narrow results. Using more than one option usually returns the most relevant results.

Open the ICIS-NPDES Search

Go to https://enviro.epa.gov/envirofacts/icis-npdes/search.
Use a modern browser (Chrome, Edge, Firefox). The tool does not support Internet Explorer.

Facility Identification

Facility Name

Enter a complete or partial facility name. If you aren’t sure of the exact name, start with part of the name (e.g., “City of Springfield”) to return more matches.

NPDES ID

Enter a complete or partial NPDES ID (e.g., “VA002” or the full 9-character ID). Use an exact ID when you want a specific facility; partial IDs are useful when the last characters vary.

Geography

You can filter by one or more of the following:

ZIP Code: five-digit ZIP; ZIP+4 is also accepted.
Address: complete or partial street address.
City and/or County (with state).
State: Select a State from the dropdown list.

Tip: Start broad (state or county) and add more detail (city or ZIP) if you get too many results.

Industry Classification

SIC Code

Use a 4-digit Standard Industrial Classification (SIC) code. For broader searches, enter the first 2–3 digits. If available, you can also search by keyword in the facility name to approximate an industry (e.g., “water,” “meat,” “paper”).

Parameter (Chemical) Filters

Parameter Code

If you know the parameter code, enter it directly. Otherwise, use the tool’s parameter lookup (when available) or search by name.

Parameter Name

Enter a complete or partial parameter/chemical name (e.g., “Ammonia,” “Total Suspended Solids”). Using common names usually returns results; you can refine later if you get too many.

Permit Dates

Permit Issued Date and Permit Expiration Date

Enter a date range to find permits issued or expiring within specific periods. If you enter a single date, the system will return results for that date only.

Search Values Option

Select Use Multisystem facility information to perform facility search to identify facilities using facility information from all program systems. Select Use ICIS-NPDES facility information only to perform facility search to identify facilities using only ICIS-NPDES facility information.

Run the Search

Select your filters.
Click Search.
If you get many results, add another filter (e.g., city, ZIP, or part of the NPDES ID) and search again.

Understanding the Results

The Search Results provide a list of EPA-regulated facilities in Envirofacts that match the criteria you selected. The information given for these facilities in the search results page includes:

NPDES ID — Click the hyperlinked NPDES ID to see an ICIS Detailed Report.
Facility Information — Click the hyperlinked “Facility Information” text to see the FRS report.
HANDLER NAME
ADDRESS (combination of the following attributes in ICIS-NPDES):
- Street
- City
- State
- ZIP Code
COUNTY
LATITUDE/LONGITUDE
Permit Issued Date
Permit Expired Date
SIC Code/SIC Desc
Mapping Info
USGS HUC

ICIS Detailed Report

The ICIS Detailed Report provides the following sections:

Facility Information
Activity
Contacts
Permit Tracking
Permit Tracking Events
Inspections
Outfalls/Pipe Schedules
Limits Report (Pipes)
Limits Report (Dockets)
Measurements and Violations
Compliance Schedules and Violations
Compliance Schedule Events
Compliance Schedule Violations
Pretreatment Inspections/Audits
Pretreatment Performance Summary

Tips

Combine facility name with a state or ZIP to narrow results.
Use a partial NPDES ID if you’re unsure of the last digits.
If a search returns no results, remove one filter and try again.

Usage Constraints

Information in ICIS-NPDES is publicly accessible through this search. Very large queries may time out; refine your filters to retrieve smaller result sets. Close the session when finished so others can access the system.