Territory Standards in Effect for CWA Purposes
- [See Puerto Rico Water Quality Standards Regulation ]
(Effective June 11, 2019) Water Quality Standards for Puerto Rico.
Federally Proposed or Promulgated Standards
- 40 CFR §131.40 Puerto Rico
- 40 CFR §131.42 Antidegradation Implementation Methods for the Commonwealth of Puerto Rico
- Puerto Rico Water Quality Standards Regulation (PDF)(90 pp, 7 MB)