---
kind: "section"
citation: "19 U.S.C. § 4731"
title: "19"
title_heading: "Customs Duties"
number: "4731"
heading: "Border water infrastructure improvement authority"
release: "119-102"
url: "https://uscodex.org/usc/19/4731"
units:
  - "Chapter 29 — United States–mexico–canada Agreement Implementation"
  - "Subchapter VII — Environment Monitoring and Enforcement"
  - "Part B — Other Matters"
---

# §4731. Border water infrastructure improvement authority

- (a) **In general—** The Administrator of the Environmental Protection Agency shall, in coordination with [eligible public entities](#c-2), carry out the planning, design, construction, and operation and maintenance of high priority [treatment works](#c-3) in the [covered area](#c-1) to treat wastewater (including stormwater), nonpoint sources of pollution, and related matters resulting from international transboundary water flows originating in [Mexico](/usc/19/4502.md?p=5).
- (b) **Report to Congress—** Not later than 1 year after January 29, 2020, and annually thereafter, the Administrator shall submit to Congress a report on activities carried out pursuant to this section.
- (c) **Definitions—** In this section:
  - (1) **Covered area—** The term “covered area” means the portion of the Tijuana River watershed that is in the United States.
  - (2) **Eligible public entities—** The term “eligible public entities” means—
    - (A) the United States Section of the International Boundary and Water Commission;
    - (B) the Corps of Engineers;
    - (C) the North American Development Bank;
    - (D) the Department of State;
    - (E) any other appropriate Federal agency;
    - (F) the State of California; and
    - (G) any of the following entities with jurisdiction over any part of the [covered area](#c-1):
      - (i) A local government.
      - (ii) An Indian Tribe.
      - (iii) A regional water board.
      - (iv) A public wastewater utility.
  - (3) **Treatment works—** The term “treatment works” has the meaning given that term in [section 1292 of title 33](/usc/33/1292.md).

## Source credit

(Pub. L. 116–113, title VIII, § 821, Jan. 29, 2020, 134 Stat. 95.)