Watershed-Based Permitting Continues Evolving

Jan. 1, 2008
In Industrial WaterWorld’s September/October 2007 issue, I discussed how water quality trading began gaining traction at the EPA.
Click here to enlarge image

by Jay Collert, CHMM, CET

In Industrial WaterWorld’s September/October 2007 issue, I discussed how water quality trading began gaining traction at the EPA. The companion to that issue is the watershed-based permitting which is also moving forward. The genesis of watershed-based permitting was a policy memo issued by the EPA Office of Water Assistant Administrator on Dec. 3, 2002 – Committing EPA’s Water Program to Advancing the Watershed Approach. This memo not only reaffirmed its commitment to the approach, but also re-energized efforts to ensure the agency fully integrates it into its programs and supports regulatory authorities that implement water programs on a watershed basis.

In December 2003, EPA issued the Watershed-based National Pollutant Discharge Elimination System (NPDES) Permitting Implementation Guidance that describes its recommended steps and ideas for watershed-based permitting implementation under the NPDES permit program. This approach, aimed at achieving new efficiencies and environmental results through the NPDES program, provides a process for considering all stressors within a hydrologically defined drainage basin or other geographic area (e.g., municipality), rather than addressing individual pollutant sources on a discharge-by-discharge basis. The December 2003 guidance followed a long series of EPA guidance, policy and training supporting a watershed-based approach to addressing water quality concerns.

Updating the 2003 Guidance

In July 2007, EPA released Watershed-based National Pollutant Discharge Elimination System (NPDES) Permitting Technical Guidance. This document is a supplement to the 2003 Guidance, providing greater detail concerning a number of permit development and issuance questions not addressed previously. This document is focused on helping NPDES authorities develop and issue NPDES permits that fit into an overall watershed planning and management approach with input from watershed stakeholders. It consists of three chapters summarized below:

• Chapter 1 is Approaches to Water Quality Management Using an NPDES Watershed Framework. This Chapter discusses the NPDES program’s role in an overall watershed approach and presents a tool called the NPDES Watershed Navigator to develop a framework for structuring and managing implementation so the entire watershed is considered in the permit development process.

• Chapter 2 is Guide for Multisource Watershed-based NPDES Permitting. A potential outcome of the process described in Chapter 1 is a decision to develop a multisource watershed-based permit, which would allow point sources in a watershed to apply for and obtain permit coverage under the same permit for one or more pollutants.

• In Chapter 3, Watershed-based NPDES Permitting Case Studies, EPA has developed a series of case studies describing how watershed approaches have been implemented across the country.


It’s important to note many NPDES options discussed in this technical document, as well as implementation of other water resource programs that may be used to meet watershed goals, are addressed in other guidance or training provided by EPA and other agencies. Although most of the approaches and programs discussed are not new, this is the first time EPA has developed an integrated guidance regarding its relationship to the NPDES program within a watershed framework. Where appropriate, this document points readers to existing resources that provide additional technical assistance in implementing specific watershed-based approaches. For example, EPA’s Water Quality Trading Toolkit for Permit Writers complements this Guidance and helps facilitate incorporating water quality trading into NPDES permits.

About the Author: Jay Collert is director of the Aarcher Institute of Environmental Training LLC. Contact: www.aarcherinstitute.com

Sponsored Recommendations

NFPA 70B a Step-by-Step Guide to Compliance

NFPA 70B: A Step-by-Step Guide to Compliance

How digital twins drive more environmentally conscious medium- and low-voltage equipment design

Medium- and low voltage equipment specifiers can adopt digital twin technology to adopt a circular economy approach for sustainable, low-carbon equipment design.

MV equipment sustainability depends on environmentally conscious design values

Medium- and low voltage equipment manufacturers can prepare for environmental regulations now by using innovative MV switchgear design that eliminates SF6 use.

Social Distancing from your electrical equipment?

Using digital tools and apps for nearby monitoring and control increases safety and reduces arc flash hazards since electrical equipment can be operated from a safer distance....