Water Quality Standards Regulations: Puerto Rico
Presented are water quality standards in effect for Clean Water Act (CWA) purposes for this territory.
EPA is posting these standards as a convenience to users and has made a reasonable effort to assure their accuracy. For each document listed under "Territory Standards in Effect for CWA Purposes", EPA has made a reasonable effort to identify parts of the standards that are disapproved or are otherwise not in effect for CWA purposes. Additionally, please note the documents may also contain provisions that EPA does not have the authority and duty to act on under the Clean Water Act because the provisions are not water quality standards.
Puerto Rico Water Quality Standards Regulation (pdf)
(Effective June 11, 2019) Water Quality Standards for Puerto Rico.
- 40 CFR §131.40 Puerto Rico
- 40 CFR §131.42 Antidegradation Implementation Methods for the Commonwealth of Puerto Rico
The document suggests how states and authorized tribes can conduct online public hearings in lieu of in-person public hearings, consistent with federal public hearing requirements.