California Water Views

On April 2, 2025, the Court of Appeal for California’s Fifth Appellate District issued its decision in Bring Back the Kern v. City of Bakersfield, 2025 S.O.S. 909. That case held that courts must apply the reasonableness requirement for water use that is found in article X, section 2 of the California Constitution “whenever adjudicating a use of water.” … 

On March 14, 2025, the Court of Appeal for California’s Fifth Appellate District issued its decision in Sandton Agriculture Investments III v. 4-S Ranch Partners, 2025 S.O.S. 659. That case provided guidance on ownership of captured water and percolating groundwater.

In 2024, after years of deliberation, California water officials adopted landmark rules that will guide future water use and conservation in the state. The “Making Conservation a California Way of Life” framework went into effect at the beginning of 2025 and requires compliance by 2027. The framework is intended to help preserve water supplies as climate change drives hotter, drier conditions and droughts become more frequent and longer lasting, and is expected to help save 500,000 acre-feet of water annually by 2040. That is enough to supply more than 1.4 million households ...

The California State Water Resources Control Board (State Water Board) has begun its process to develop a new statewide Urban Stormwater Infiltration Policy. The goal of the proposed new policy is to establish statewide standards for stormwater infiltration to provide a consistent regulatory framework to “encourage infiltration of urban stormwater and increase local water supply resiliency, provide greater protection of stormwater quality, and develop projects with multiple benefits for communities.”  … 

On January 24, 2025, President Trump issued Executive Order 14181 (EO 14181), entitled “Emergency Measures to Provide Water Resources in California and Improve Disaster Response in Certain Areas.” While alluding to assisting Americans in disaster areas generally, EO 14181 largely focuses on significantly changing water management policies in California.

Key Provisions of EO 14181 and the Impact on Water

The first three sections of the executive order are the ones primarily focused on California water.

• Section 1, entitled “Policy,” notes that “it is the policy of the ...

On January 10, 2025, Governor Newsom announced his 2025-2026 budget proposal of $322.3 billion. Unlike in 2023 and 2024, the proposal is for a balanced budget with a surplus of $363 million, although it does include $7 billion in funds from the state’s rainy day fund. The budget site includes a full combined summary, summaries of individual sections and a full detailed budget.

The budget includes reductions in funding for nearly all government agencies. The Natural Resources Agency has the biggest cut in net dollars and the second biggest cut percentage wise, with a 55.4% and ...

On October 23, 2024, the US Environmental Protection Agency (EPA) announced $276 million in available funding for California water infrastructure projects. When combined with the $269 million it announced on October 8, 2024, that raises the total to $545 million announced this month.

The funding comes through President Biden’s Bipartisan Infrastructure Law, which provides for $50 billion in investments in water infrastructure throughout the country. The October 23 announcement is part of a total of $3.6 billion in available funding, which is designated to particular states ...

During California’s eighth annual Water Professionals Appreciation Week, we recognize the essential role of water professionals and local public water agencies in providing water and wastewater services. … 

The 2024 legislative session ended on August 31, 2024, meaning the legislature passed all bills for this year. All of the bills are currently with Governor Newsom. He has until September 30 to sign or veto any bills. Any bills not signed by September 30 will be vetoed through a ‘pocket veto.’

This session was a busy one for bills affecting the water sector with at least nine bills passed impacting water and sewer systems in California. The bills cover a wide range of topics, including fines for violating State Water Resources Control Board (State Water Board) orders, Proposition 26 and 218 requirements for water-related fees, Sustainable Groundwater Management Act (SGMA) requirements, and the California Water Plan. … 

On September 6, 2024, EPA announced $7.5 billion in available loan funding through the Water Infrastructure Finance and Innovation Act (WIFIA). From that total, $6.5 billion is available through WIFIA loans and $1 billion is available through the State Water Infrastructure Financing Authority (SWIFIA). … 

On August 6, 2024, the Office of Administrative Law (OAL) approved the direct potable reuse (DPR) regulations that were previously adopted by the State Water Resources Control Board (State Water Board) on December 19, 2023. The approved regulations – which go into effect on October 1, 2024 – will allow public water systems and other agencies in California to obtain permits to develop DPR projects.

DPR is when purified recycled water is placed directly into a public water system or into a “raw” (untreated) water supply immediately upstream of a drinking water treatment plant ...

On July 8, 2024, the California Supreme Court issued its opinion in Golden State Water Company v. Public Utilities Commission. The petitioners, California Water Association, California-American Water Company, California Water Service Company, Golden State Water Company, Liberty Utilities (Park Water) Corporation and Liberty Utilities (Apple Valley Ranchos Water) Corporation, sought review of a 2020 California Public Utilities Commission (CPUC) decision that prohibited regulated water utilities from continuing to employ a decoupling ratesetting mechanism known as ...

On April 10, 2024, the U.S. Environmental Protection Agency (EPA) announced its final National Primary Drinking Water Regulation for six per- and polyfluoroalkyl substances (PFAS). This long-awaited regulation sets forth enforceable Maximum Contaminant Levels (MCLs) for PFAS for the first time and is expected to require significant treatment infrastructure investment for many public water systems across the country. Given the breadth of the challenges ahead, the EPA is providing an extended implementation timeline that incorporates initial monitoring and ...

After months of unusually heavy rainfall from California’s atmospheric rivers in the beginning of 2024, many projects found themselves facing delays, additional costs and setbacks due to the wet weather. In determining who is responsible for those delays, costs or setbacks, the first thing to look for in a contract are provisions on Force Majeure. Some parties may be surprised by what their contract says on Force Majeure and what risk they assumed for bad weather. … 

Per- and polyfluoroalkyl substances (PFAS) are at the top of every environmental regulator’s list in 2024 and already this year the United States Environmental Protection Agency (EPA) has taken key steps toward regulating PFAS as hazardous substances. On April 19, 2024, EPA announced that it finalized its rulemaking designating perfluorooctanoic acid (PFOA) and per-fluorooctanesulfonic acid (PFOS) as hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) (also known as the Superfund law). … 

The California State Water Resources Control Board (State Water Board) recently issued a revised draft State Policy for Water Quality Control for Standardized Cost Reporting in Municipal Separate Storm Sewer Systems (MS4) Permits (the Policy). If adopted, this Policy would require permittees subject to MS4 permits to use a list of standardized cost categories to track and report their MS4 permit implementation costs.

The State Water Board released the revised draft Policy on May 9, 2024 for a second round of public comments, which will be due on June 25, 2024, and will hold a public ...

On April 4, 2024, Governor Newsom and the U.S. Bureau of Reclamation (Bureau) announced that the Bureau awarded California $15 million for the Delta-Mendota Canal floating solar project. The project, which is funded through President Biden’s Inflation Reduction Act, marks a key step forward for ‘floating solar,’ a technology that is billed as a win-win for the energy and water sectors. … 

On April 2, 2024, the California Department of Water Resources (DWR) released the California Water Plan Update 2023 (CWP 2023 Update). DWR’s press release dubs the plan “A Roadmap to Water Management and Infrastructure for a Water Resilient Future.” Resiliency is one of the key focuses for the CWP 2023 Update, as its chapter on objectives is entitled the “Roadmap to Resilience.” The plan is focused on the vision that “All Californians benefit from water resources that are sustainable, resilient to climate change, and managed to achieve shared values and connections to ...

The Biden-Harris administration is redoubling its efforts to improve cybersecurity for the nation’s water systems. In March, the U.S. Environmental Protection Agency (EPA) and the White House issued a dire warning to state governors alerting them of the need to protect water and wastewater systems from ongoing cybersecurity threats and requested that the states provide plans to decrease the risk of attacks on water and wastewater systems in their state. … 

In January 2023, the U.S. Environmental Protection Agency and the U.S. Army Corps of Engineers (Agencies) adopted a final rule altering the definition of "waters of the United States" (WOTUS), a key term that is referred to but not defined in the Clean Water Act (CWA) and is crucial for determining CWA permitting jurisdiction. The Agencies' stated purpose in adopting the rule was to better comply with the CWA by repealing and replacing a definition of WOTUS that had previously been adopted during the Trump administration; however, promulgation of the rule prompted multiple lawsuits ...

On January 31, 2024, the U.S. Environmental Protection Agency (EPA) announced that it is proposing to list nine per- and polyfluoroalkyl substances (PFAS) as hazardous constituents under the Resource Conservation and Recovery Act (RCRA). This action represents another significant step in the regulation of PFAS.

PFAS are a key focus of many environmental regulators and of many people as well largely based on their ubiquity and catchy nickname “forever chemicals.” Both come from the fact that PFAS do not break down naturally over time either in the environment or in the human ...

On January 10, 2024, Governor Newsom announced his 2024-2025 State budget proposal for $291 billion with a $37.9 billion proposed deficit. For water projects, the proposal is remarkably similar to his proposal from last year. The main differences as compared to last year’s proposal are bigger cuts (to many of the same areas cut last year) and less funding for new projects.

Governor Newsom seeks to address the $37.9 billion budget shortfall (which is substantially lower than the Legislative Analyst Office’s $68 billion projection from last month) through a variety of ...

After releasing the final environmental report (EIR) for the Delta Conveyance Project on December 8, the Department of Water Resources (DWR) certified it on December 21, 2023. The certification of the final EIR is a significant step forward for the Delta Conveyance Project, a key project for the Newsom administration. It also provides the basis for legal challenges, which are all-but inevitable.

The Delta Conveyance Project is the latest in a long line of proposed conveyance projects designed to bring water from northern California to southern California. Different iterations of ...

If there is one truism in California water, it is that there is not enough of it. In part to try to help address that issue, on December 19, 2023, the California State Water Resources Control Board (State Water Board) adopted the state’s first direct potable reuse (DPR) regulations. As detailed in the State Water Board’s press release, the new regulations represent the “most advanced standards in the nation,” provide a “climate-resilient water source,” and “add millions of gallons of additional drinking water.” However, is the picture quite that rosy? … 

The year started with a bang, with a lot of new Members of the Legislature, and more seasoned Members, invigorated and motivated to tackle some major water policy and funding issues for California. While some significant water policy changes were passed by the Legislature this year (with much controversy), there is still much left to debate and discuss in the second year of the two-year session, which will begin on January 3, 2024. … 

On November 21, 2023, the Ninth Circuit Court of Appeals issued its decision in Cottonwood Environmental Law Center vs. Edwards addressing various Clean Water Act issues. Its two key holdings were that (1) the district court did not err when it rejected plaintiff’s direct discharge theory and (2) the district court did err when it held that plaintiff did not provide sufficient notice. … 

On November 20, 2023, a panel of the Ninth Circuit Court of Appeals issued its opinion in Idaho Conservation League v. Poe, No. 22-35978. Therein, the Court upheld its previous interpretation of “discharged” in the context of an allegation that a party violated the National Pollutant Discharge Eliminating System (NPDES) permit system under the Clean Water Act. It did so notwithstanding the defendant’s allegation that Supreme Court precedent overruled that interpretation. … 

Deadlines are upcoming related to the multi-district per- and polyfluoroalkyl substances (PFAS) litigation. The relevant settlements are with DuPont, Chemours, and Corteva (collectively, DuPont) and 3M, parties who allegedly manufactured various PFAS chemicals. The currently-pending settlements cover $1.185 billion for DuPont and $10.5-$12.5 billion for 3M.

The litigation is focused on alleged contamination of drinking water caused by DuPont’s and 3M’s alleged manufacture of PFAS chemicals. PFAS are a family of manmade chemicals that are used due to beneficial ...

Providing affordable, safe and reliable water service in California is becoming increasingly challenging. Water service providers must deal with aging infrastructure, increasingly stringent water quality regulations and the threat of more frequent and extreme weather events, such as fires, drought and flooding, due to climate change. Smaller water service providers may struggle with adapting their operations to comply with changes in water quality requirements. These systems, which often rely on a single water source, are less resilient in dealing with contamination or ...

On October 8, 2023, Governor Gavin Newsom signed into law Senate Bill 389 (SB 389), which amended § 1051 of the Water Code to expand the investigatory authority of the State Water Resources Control Board (Water Board). The bill was introduced by Senator Ben Allen of Santa Monica.

While the bill imbues the Water Board with additional investigatory authority to ascertain whether or not a water right is valid, it does not alter the statutory scheme for enforcement should the Water Board determine as part of an investigation that a particular diversion or use of water was not supported by a ...

Managed retreat—the process of moving people and property away from the shoreline—is an unpopular but increasingly accepted response to rising sea-levels. In the inaugural issue of Nossaman’s California Water Views – 2023 Outlook, we discuss the saga of Morro Bay’s efforts to relocate and reopen its wastewater treatment plant farther inland at the direction of the California Coastal Commission. After many fits and starts, the Morro Bay plant opened in February 2023 and cost $161 million to build. The Morro Bay case is relevant because similarly situated coastal ...

Despite efforts to stem increasing cyber threats to water systems around the nation, on October 13, 2023, the United States Environmental Protection Agency (EPA) withdrew cybersecurity mandates put in place by the Biden administration after the 8th U.S. Circuit Court of Appeals July decision to place the mandates on hold while court actions continued.

In an attempt to harden clean water and wastewater treatment facilities from cyberattacks, the administration issued an interpretive memorandum in March 2023, that mandated adding cybersecurity assessments as a regular part of ...

On September 28, 2023, the U.S. Environmental Protection Agency (EPA) finalized its rule requiring reporting of per- and polyfluoroalkyl substances (PFAS). According to EPA’s press release, the rule is intended to “provide EPA, its partners, and the public with the largest-ever dataset of [PFAS] manufactured and used in the United States.”

EPA’s new rule is part of its PFAS Strategic Roadmap, the Biden Administration’s plan to address PFAS, a family of man-made chemicals that are becoming well-known and well-studied based on their ubiquity and resistance to breaking down naturally.... 

In recognition of California’s seventh annual Water Professionals Appreciation Week, we would like to take a moment to highlight the essential role of water professionals and local public water agencies in providing water and wastewater services to our communities. Not just this week, but throughout the year, we appreciate the dedication of the highly trained operators, technicians and other specialists who have continued to make sure our communities have safe and reliable water, wastewater and recycled water services amidst a drought and pandemic. … 

Commonly known as “forever chemicals” due to their ability to persist in the environment, per- and polyfluoroalkyl substances (PFAS) are an emerging contaminant of concern that the United States Environmental Protection Agency is currently promulgating regulations to address. The long-awaited adoption of an enforceable Maximum Contaminant Level for PFAS will bring sweeping changes and challenges to public water systems across the country. We provide insights on the on-going PFAS rulemaking process and what it might mean for the water industry … 

On August 29, 2023, the U.S. Environmental Protection Agency and U.S. Army Corps of Engineers released their amendment to the January 2023 rule defining what constitutes waters of the United States (WOTUS) in order to incorporate the majority’s opinion in Sackett v. EPA. We have previously reported extensively on Sackett and the varying iterations of the definition of WOTUS. You can view EPA’s webpage on the amendment here. … 

We are excited to release the inaugural issue of Nossaman’s California Water Views – 2023 Outlook. April 1st is an important milestone in California’s water year – marking the annual snowpack assessment and related drought determination. We asked a number of our attorneys and policy advisors who are committed to the water sector to identify the pivotal issues they’re watching now and for the year ahead. … 

On January 6, 2023, the U.S. Environmental Protection Agency (EPA) announced its Final Rule, listed at 88 FR 986, updating the maximum civil monetary penalties that may be assessed for violations of environmental statutes. This annual update is required by the Federal Civil Penalties Inflation Adjustment Act Improvements Act of 2015. This is the seventh annual adjustment under that act.

The update is designed to reflect inflation in order to maintain the deterrent effect of statutes providing civil monetary penalties, and is based on a formula that factors in the consumer price ...

On January 10, 2023, Governor Gavin Newsom announced his $297 billion budget proposal for 2023-2024, which includes a $22.5 billion budget deficit. Despite environmental/climate change programs facing $6 billion in cuts, Governor Newsom’s proposed budget includes relatively few negative impacts to water projects. In fact, the drought response and water resilience section, which includes the vast majority of water-related funding, only faces a cut of two percent, from $8.7 billion to $8.6 billion. That two percent reduction is the lowest of any environmental category. ...  

On December 19, 2022, the U.S. Army Corps of Engineers (Army Corps), Sacramento District released its Draft Environmental Impact Statement (EIS) for the Delta Conveyance Project. The Army Corps is the federal agency tasked with evaluating the Delta Conveyance Project for compliance with the National Environmental Policy Act. Cooperating federal agencies include the U.S. Fish and Wildlife Service, National Marine Fisheries Service, U.S. Environmental Protection Agency, and U.S. Bureau of Reclamation. … 

On December 6, 2022, the U.S. House of Representatives passed the National Defense Authorization Act (NDAA) by a bipartisan vote of 350-80. The NDAA includes the Water Resources Development Act (WRDA) of 2022, which includes nearly $38 billion in funding for the Army Corps of Engineers (Corps). (The text of the WRDA begins on page 3160 of the NDAA.) The WRDA is biennial legislation that provides the Corps with funding to address navigation, flood control, and ecosystem restoration. This year’s bill authorizes projects in all 50 states. On the same day, a bipartisan group of Senators and Representatives announced that they reached an agreement on the WRDA. On December 15, 2022, the Senate passed the NDAA. … 

On November 10, 2022, California Attorney General Rob Bonta announced that he had filed a lawsuit against 3M, DuPont, and sixteen other companies for their roles in manufacturing per- and polyfluoroalkyl substances (PFAS). The lawsuit seeks money damages, which could reach hundreds of millions of dollars, for damages, penalties, and restitution, as well as injunctive relief and abatement. Some consider the lawsuit the broadest of its kind brought by any state.

PFAS is an umbrella term that covers dozens of types of man-made chemicals. PFAS were used for a variety of purposes ...

On September 7, 2022, California became the first government in the world to require microplastics testing for drinking water, an emerging contaminant that is found throughout the environment. The State Water Resources Control Board (State Water Board) approved a policy handbook that details how it will implement a four-year plan, including testing logistics as well as how it will select the public agencies that will be required to test.

Microplastics represent an emerging contaminant of concern for which there are still a number of unanswered questions. As the policy handbook ...

A key priority of the Newsom administration – the Delta Conveyance Project – has officially entered its next chapter. On July 22, the Department of Water Resources (DWR) released its draft environmental impact report (Draft EIR) for the Delta Conveyance Project.

The Delta Conveyance Project is DWR’s and Governor Newsom’s plan to build an underground tunnel to bring water from the Sacramento-San Joaquin Delta to the State Water Project pumps near Tracy in order to reduce the risk from earthquakes and climate change to the State’s water supplies. It is intended to protect ...

On July 1, 2022 a panel of the Ninth Circuit issued a superseding opinion in California River Watch v. City of Vacaville, Appeal No. 20-16605, withdrawing its previous opinion in the same case and reaching the opposite result. The case is a rare example of a court reversing itself, and has important implications for water suppliers in California and nationwide.

In California River Watch, the plaintiff sought to impose RCRA liability on a water supplier based on the presence of hexavalent chromium in the water it supplied to customers, despite the fact that the water complied with the ...

On June 15, 2022, the U.S Environmental Protection Agency (EPA) announced new health advisories for four per- and polyfluoroalkyl substances (PFAS). The health advisories significantly lowered the level considered safe to consume for two PFAS and set limits for two new PFAS. At the same time, EPA announced it was making $1 billion available in grant funding to help communities address PFAS contamination.

PFAS have been dubbed “forever chemicals” because they tend to linger in the environment and humans rather than naturally breaking down. There are dozens of different types ...

On May 24, 2022, the California State Water Resources Control Board announced emergency drought restrictions resulting from Governor Newsom’s Executive Order N-7-22. The regulations are the latest in a series of attempts by the state to deal with the ongoing severe drought. The regulations cover two areas: a ban on irrigating non-functional turf and a requirement that urban water suppliers implement the Level 2 demand reduction actions in their water shortage contingency plan. …

On May 12, 2022, at the conclusion of a 10-hour hearing, the California Coastal Commission voted to deny Poseidon Water’s application to site and operate a desalination plant in Huntington Beach, in what could be a fatal blow for a project that has been debated for more than 20 years.

The Coastal Commission’s vote was unanimous, 11-0, in agreeing with the staff report’s recommendation to reject Poseidon Water’s application. The staff report recommended denial “due to this project’s fundamental inconsistencies with Coastal Act and LCP policies related to coastal ...

At a board meeting on April 26, 2022, the Metropolitan Water District of Southern California (“the Met”) announced it would be requiring reductions in water usage from retail water suppliers that are dependent on water from the State Water Project. The reduction, which the Met took as a result of the severity of the state’s current drought, will apply to six million Californians covering Los Angeles, Ventura and San Bernardino counties. The impacted retail water suppliers are Los Angeles Department of Water and Power, Three Valleys Municipal Water District, Upper San Gabriel ...

Recently, I authored a post for DeltaCurrents, the Center for California Water Resources Policy and Management's blog. The focus of the piece is on the ways in which science can play a role in the success of the so-called Voluntary Agreements (VAs). The VAs are an alternative to an adjudicatory water-rights proceeding as a means for the State Water Resources Control Board to implement updated water quality objectives for California’s Bay-Delta and its tributary rivers.

A number of federal, state, and local agencies took a significant first step toward negotiation of VAs by ...