An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Bioassessment and Biocriteria Program Status for Puerto Rico: Streams and Wadeable Rivers

State Program Contact

Puerto Rico Department of Natural and Environmental Resources Exit

Water Quality Standards

WQS Information
The link to Puerto Rico's WQS that are in effect for Clean Water Act purposes is provided. These are the WQS approved by EPA.
The territory of Puerto Rico provided information and links to sections of their administrative code on designated aquatic life use, biological criteria, antidegradation as well as technical support documents and information on its bioassessment and biocriteria programs. These are included for your convenience and may or may not reflect the most recently EPA approved WQS.

You may need a PDF reader to view some of the files on this page. Refer to EPA’s about PDF page to learn more.

Designated Aquatic Life Uses

  • SB - coastal waters and estuarine waters for propagation and maintenance of desirable species, including threatened or endangered species
  • SD – surface water propagation and preservation of desirable species, including threatened and endangered species. 
  • SE – surface waters and wetlands of exceptional ecological value, whose existing conditions should not be altered in order to preserve natural characteristics.

Biological Criteria
_____ Narrative
_____ Numeric
__X__ No criteria

Antidegradation Policy
Not applicable.

Biological Assessment

What biological assemblages are used in the bioassessment program?

Are bioassessments used to support 303(d) listings?

How are assemblages used to make impairment decisions?
Not applicable.

Other uses of biocriteria or bioassessment within the water quality program:
Not applicable.

Technical Support Information and Documents:

Reference condition:
Not applicable.

Not applicable.

Stressor identification/causal analysis approach:
Not applicable.

Top of Page