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The California legislature continues to advance Senate Bill 601 (SB 601), the “Right to Clean Water Act,”[1] which aims to safeguard protections for California’s streams and wetlands that lost federal protection under the Clean Water Act (CWA) as a result of the Supreme Court’s 2023 Sackett v. U.S. EPA decision. If approved, SB 601 would expand enforcement to include citizen suits and increase penalties for unpermitted discharges to state waters.

Effective February 3, 2025, the New Jersey Department of Environmental Protection (NJDEP) adopted amendments to the Ground Water Quality Standards (GWQS), N.J.A.C. 7:9C. The amendments updated the groundwater quality criteria and/or practical quantitation levels (PQLs) for 73 constituents, the vast majority of which became more stringent. For example, groundwater quality standards for tetrachloroethylene (PCE) and vinyl chloride were changed from 1 µg/l to 0.4 µg/l and 0.035 µg/l, respectively. Of note, the decrease attributable to vinyl chloride is by more than an order of magnitude – a significant and regulatorily meaningful change. NJDEP also amended its rounding protocols to round new or revised groundwater standards to two significant figures rather than one. The amendments enable NJDEP to update specific groundwater criteria for constituents with corresponding Safe Drinking Water Act (SDWA) maximum contaminant levels (MCLs) when NJDEP determines the weight of evidence approach would more appropriately address risks posed by such constituents than the health-based levels used to establish MCLs.

President Trump hit the ground running, issuing more executive orders, memoranda, and other actions on Inauguration Day than any previous president. Agencies are already working to implement those actions. Many of the actions are interrelated, so Troutman Pepper Locke’s Environmental + Natural Resources team has put together the following resource to help assess the impact of these actions on environmental policy, and how the various actions fit together.

Introduction

On November 30, 2023, the U.S. Environmental Protection Agency (EPA) released its Proposed Lead and Copper Rule Improvements (LCRI).[1] With this proposal, EPA aims to simplify and expand upon the 2021 Lead and Copper Rule Revisions (LCRR) and the original 1991 Lead and Copper Rule (LCR). The proposed LCRI outlines aggressive measures to achieve further reductions of lead in drinking water. This initiative brings to the forefront a critical question: Are the potential health benefits projected by EPA enough to justify the scope and extent of the rule and its related hefty price tag?

On November 20, with no fanfare at all, not even a press release, U.S. Environmental Protection Agency (EPA) issued its Draft Guidance: Applying the Supreme Court’s County of Maui v. Hawaii Wildlife Fund Decision in the Clean Water Act Section 402 National Pollutant Discharge Elimination System Permit Program to Discharges Through Groundwater. This draft guidance is the agency’s second effort to guide implementation of the U.S. Supreme Court’s 2020 decision, which extends applicability of the National Pollutant Discharge Elimination System (NPDES) permitting program to include the “functional equivalent” of point source discharges of pollutants to waters of the U.S.

The U.S. Environmental Protection Agency (EPA) has finalized a new regulation to implement the Clean Water Act (CWA) section 401 water quality certification program. Continuing the recent practice of promulgating regulations and then promptly replacing them, EPA’s “CWA Section 401 Water Quality Certification Improvement Rule”(the 2023 Rule) replaces the “Clean Water Act Section 401 Water Quality Certification Rule” that was finalized in 2020 (the 2020 Rule). The 2023 Rule was published in the Federal Register on September 27, 2023 and will become effective on November 27, 2023. This article provides background on the CWA water quality certification program, followed by a deep dive into the 2023 Rule and how it compares to the 2020 Rule.

The U.S. Environmental Protection Agency (EPA) has formally withdrawn cybersecurity rules it promulgated in March requiring that states report cybersecurity threats to their public water systems (PWS). The reversal comes in the wake of lawsuits filed in the Eighth Circuit in July by Missouri, Arkansas, and Iowa (the states), along with intervenors American Water Works Association and National Rural Water Association (the water associations). As a result of the withdrawal, the states and water associations filed to dismiss their suits.

Michigan Attorney General (AG) Dana Nessel has filed suit against the Gerald R. Ford International Airport Authority to enforce demands by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) related to alleged per- and polyfluoroalkyl substance (PFAS) contamination of the regional drinking water supply caused by the airport authority.

On July 25, Missouri, Arkansas, and Iowa (the states), along with intervenors American Water Works Association and National Rural Water Association (the water associations), petitioned the Eighth Circuit to review the U.S. Environmental Protection Agency’s (EPA) new rule requiring states to review and report cybersecurity threats to their public water systems (PWS).

Public water utilities and 3M have until August 28 to respond to the bipartisan coalition of 22 state attorneys general (AGs) that opposes their proposed $12.5 billion class action settlement over alleged per- and polyfluoroalkyl substance (PFAS) contamination and is seeking to intervene in their litigation.