The U.S. water sector is experiencing significant regulatory shifts and infrastructure developments heading into 2026. On January 6th, the Environmental Protection Agency proposed new national drinking water standards for perchlorate, setting a health-based maximum contaminant level goal of 0.02 milligrams per liter. The agency is simultaneously seeking public comment on three possible enforceable limits, ranging from 0.02 to 0.08 milligrams per liter, with these new regulations set to take effect on February 13th.

Water quality certification authority has become a focal point of federal action. On January 15th, the EPA published a proposed rule to update regulations governing Section 401 of the Clean Water Act, which grants states and tribes authority to review federal projects that may discharge pollutants into U.S. waters. The agency's proposal would limit state and tribal reviews to immediate water quality impacts from specific discharge points and establish timelines for these reviews. Public comment periods remain open through February 17th, with the EPA holding two public meetings on January 28th to discuss the changes.

Congressional budget actions reflect competing priorities for water infrastructure. The House passed a fiscal year 2026 budget bill for environmental agencies that maintains state revolving fund spending at previous year levels, rejecting the administration's proposed water infrastructure funding cuts. However, foreign aid water appropriations faced reductions, with funding earmarked for water, sanitation, and hygiene programs decreased by 25 percent to 338 million dollars. The House also passed the SHOWER Act, legislation allowing showerheads to exceed current water efficiency standards.

Western water challenges continue intensifying as the region faces record heat and meager snowpack. According to the National Oceanic and Atmospheric Administration's drought assessment for the Intermountain West, significant snow accumulation is urgently needed over coming months to compensate for the severe lack of winter precipitation thus far.

Globally, the water sector is preparing for major international coordination. The 2026 United Nations Water Conference will convene December 2nd through 4th in the United Arab Emirates, co-hosted with Senegal, to advance Sustainable Development Goal 6 on clean water and sanitation. A preparatory meeting is planned in Dakar, Senegal, to support preparations for this significant gathering.

The International Water Association continues hosting regional conferences throughout 2026, with events scheduled across multiple continents addressing urban water challenges and sanitation solutions. These developments reflect growing recognition that water security requires coordinated federal policy, state-level implementation authority, and international cooperation to address emerging contaminants and infrastructure needs.

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