S 93
· 119th Congress
· Environmental Protection
Harmful Algal Bloom and Hypoxia Research and Control Amendments Act of 2025
Sponsor
Latest action
Held at the desk.
Action timeline
Every recorded action on this bill, newest first. Stage badges color-code the legislative path.
Sep 11, 2025
floor
Message on Senate action sent to the House.
Sep 11, 2025
floor
Received in the House.
Sep 11, 2025
floor
Held at the desk.
Sep 10, 2025
passed
Passed/agreed to in Senate: Passed Senate without amendment and an amendment to the Title by Unanimous Consent.
Sep 10, 2025
passed
Passed Senate without amendment and an amendment to the Title by Unanimous Consent.
Jul 01, 2025
committee
Committee on Commerce, Science, and Transportation. Reported by Senator Cruz without amendment and an amendment to the title. With written report No. 119-34.
Commerce, Science, and Transportation Committee
Jul 01, 2025
other
Placed on Senate Legislative Calendar under General Orders. Calendar No. 109.
Feb 05, 2025
committee
Committee on Commerce, Science, and Transportation. Ordered to be reported without amendment favorably.
Commerce, Science, and Transportation Committee
Jan 14, 2025
introduced
Introduced in Senate
Jan 14, 2025
introduced
Read twice and referred to the Committee on Commerce, Science, and Transportation.
Commerce, Science, and Transportation Committee
Text versions
Each stage of the bill — official text published by GPO. Click any format to read on congress.gov / govinfo.
CRS summaries
Plain-English summaries written by the Congressional Research Service — neutral, nonpartisan staff who summarize bills as they advance through stages. The authoritative description of what each version of the bill does.
00
Introduced in Senate
Jan 14, 2025
Harmful Algal Bloom and Hypoxia Research and Control Amendments Act of 2025
This bill extends through FY2030 and modifies the Harmful Algal Bloom and Hypoxia Research and Control Act to address algal blooms and hypoxia (deficiency of oxygen) in U.S. marine, estuarine, and freshwater systems. Harmful algal blooms are high concentrations of algae that may create nuisance or toxic conditions that are harmful to humans, animals, aquatic ecosystems, and the economy.
The bill directs the Inter-Agency Task Force on Harmful Algal Blooms and Hypoxia to submit to Congress an action strategy for harmful algal blooms at least once every five years. The bill also expands the task force's membership to include the Department of Energy.
The bill also expands the duties of the National Oceanic and Atmospheric Administration (NOAA) under the National Harmful Algal Bloom and Hypoxia program. NOAA must also carry out a variety of activities related to monitoring, predicting, preventing, mitigating, and responding to marine, coastal, and Great Lakes harmful algal bloom and hypoxia events. For example, NOAA must establish (1) a national network of observing systems for monitoring, detecting, and forecasting harmful algal blooms; and (2) a national-level incubator program to increase the number of strategies, technologies, and measures available to prevent, mitigate, and control harmful algal blooms.
Additionally, the Environmental Protection Agency must develop and enhance operational freshwater harmful algal bloom monitoring, observing, and forecasting programs in lakes, rivers, and reservoirs and carry out other activities related to researching freshwater harmful algal blooms and hypoxia events.
via Congressional Research Service · published through congress.gov
Changelog
ⓘ
How a bill moves through Congress. Each stage produces a new official text. The diff between them shows what changed at that step.
ih / is — Introduced in House / Senate. First filed version.rfh / rfs — Referred to a committee for review.rh / rs — Reported back by the committee to the floor (often with amendments — this is where most language changes happen).pcs / pch — Placed on Calendar for floor consideration.eh / es — Engrossed. Passed by the originating chamber. Text is now what was actually voted on.rdh / rds — Received by the other chamber.eah / eas — Engrossed Amendment. The other chamber passed an amended version.ath / ats — Agreed to. Both chambers settled on the same text.enr — Enrolled. Final reconciled text, sent to the President.pl — Public Law. Signed by the President. It's now law.pp — Public Print. Official printing post-enactment.
Most bills die before eh/es. Going from pcs → enr is the full path through both chambers.
ⓘ
How a bill moves through Congress. Each stage produces a new official text. The diff between them shows what changed at that step.
ih/is— Introduced in House / Senate. First filed version.rfh/rfs— Referred to a committee for review.rh/rs— Reported back by the committee to the floor (often with amendments — this is where most language changes happen).pcs/pch— Placed on Calendar for floor consideration.eh/es— Engrossed. Passed by the originating chamber. Text is now what was actually voted on.rdh/rds— Received by the other chamber.eah/eas— Engrossed Amendment. The other chamber passed an amended version.ath/ats— Agreed to. Both chambers settled on the same text.enr— Enrolled. Final reconciled text, sent to the President.pl— Public Law. Signed by the President. It's now law.pp— Public Print. Official printing post-enactment.
Most bills die before eh/es. Going from pcs → enr is the full path through both chambers.
Line-level diff between text versions of this bill — what actually changed at each legislative stage.
+13
−44
25 unchanged
--- Reported (Senate)
+++ Engrossed (Senate)
@@ -1,40 +1,17 @@
[From the U.S. Government Publishing Office]
-[S. 93 Reported in Senate (RS)]
+[S. 93 Engrossed in Senate (ES)]
<DOC>
-Calendar No. 109
119th CONGRESS
1st Session
S. 93
-[Report No. 119-34]
-
-To amend the Harmful Algal Blooms and Hypoxia Research and Control Act
-of 1998 to address harmful algal blooms, and for other purposes.
-
_______________________________________________________________________
-IN THE SENATE OF THE UNITED STATES
-
-January 14, 2025
-
-Mr. Sullivan (for himself, Ms. Baldwin, Ms. Collins, Mr. Cornyn, Mr.
-Merkley, Mr. Peters, Mr. Whitehouse, Ms. Murkowski, Mr. Coons, Mr.
-Padilla, Mr. Cassidy, Mr. Wicker, Mr. Moreno, Mr. Schiff, and Mr. King)
-introduced the following bill; which was read twice and referred to the
-Committee on Commerce, Science, and Transportation
-
-July 1 (legislative day, June 30), 2025
-
-Reported by Mr. Cruz, without amendment and with an amendment to the
-title
-
-_______________________________________________________________________
-
-A BILL
-
-To amend the Harmful Algal Blooms and Hypoxia Research and Control Act
+AN ACT
+
+To amend the Harmful Algal Bloom and Hypoxia Research and Control Act
of 1998 to address harmful algal blooms, and for other purposes.
Be it enacted by the Senate and House of Representatives of the
@@ -609,29 +586,21 @@
to be appropriated to carry out this subsection $2,000,000 for
each of fiscal years 2026 through 2030, to remain available
until expended.''.
-Amend the title so as to read: ``A bill to amend the
-Harmful Algal Bloom and Hypoxia Research and Control Act of
-1998 to address harmful algal blooms, and for other
-purposes.''.
-Calendar No. 109
-
+
+Passed the Senate September 10, 2025.
+
+Attest:
+
+Secretary.
119th CONGRESS
1st Session
S. 93
-[Report No. 119-34]
-
_______________________________________________________________________
-A BILL
-
-To amend the Harmful Algal Blooms and Hypoxia Research and Control Act
+AN ACT
+
+To amend the Harmful Algal Bloom and Hypoxia Research and Control Act
of 1998 to address harmful algal blooms, and for other purposes.
-
-_______________________________________________________________________
-
-July 1 (legislative day, June 30), 2025
-
-Reported without amendment and with an amendment to the title
Cosponsors (15)
Members who signed on to support this bill.