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About half of California waterways contaminated with Pfas, pesticide analysis finds

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About half of California waterways contaminated with Pfas, pesticide analysis finds


Around half of California waterways tested by regulators are contaminated with pesticides considered Pfas, “forever chemicals”, a new analysis of state and federal records shows, highlighting a risk in the substances’ wide use that is only beginning to come into focus.

The pesticides are linked to a range of health problems, including cancer, and the review is the first to systematically check for the dangerous substances in streams and rivers, which include drinking water sources.

More than half of sediment samples also showed some levels of the pesticides, which are increasingly applied to California and the nation’s food crops.

The review of California department of pesticide regulation and United States geological survey data was released this week, just days before a proposal to eventually ban Pfas pesticides failed to make it through the state assembly. However, pieces of the legislation, including a moratorium on approvals of the new pesticides, passed.

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The findings are “alarming but not surprising”, said Varun Subramaniam, one of the report’s co-authors with the Environmental Working Group (EWG) non-profit.

“It’s concerning that we’re finding these levels of Pfas pesticide … but they were applied at really high rates on produce, so it makes sense that they’re in the streams and sediment,” he said.

Pfas are a class of at least 16,000 compounds most frequently used to make products water-, stain- and grease-resistant. They have been linked to cancer, birth defects, decreased immunity, high cholesterol, kidney disease and a range of other serious health problems. They are dubbed “forever chemicals” because they can persist for thousands of years in the environment, and are designed to be indestructible.

The chemicals are added as an active ingredient to food crop pesticides to kill weeds or insects, or used as an inert ingredient. At least 60% of active ingredients in pesticides fit the most widely accepted definition of Pfas, a 2023 analysis of EPA data found.

California farms applied an average of 2.5m lb of Pfas per year on cropland from 2018 to 2023, a review of state records last year revealed. Recent regulatory testing found the pesticide residues on 37% of all produce. But about 90% of peaches, plums and nectarines contained Pfas, while 80% of strawberries and grapes showed them.

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Public health advocates have said the pesticides almost certainly pollute nearby water sources, and the new analysis confirmed their theory. Regulators only tested streams from 10 counties, and found the highest concentrations in agricultural areas, including Monterey and San Luis Obispo counties.

Previous research showed the highest applications of Pfa pesticides in Fresno and Kern counties, but water pollution data was not collected in those regions. The results are “almost certainly an undercount” because of the limited scope, Subramaniam said.

At least 10 Pfas in pesticides were identified across the state. The pesticide bifenthrin, which is among the most toxic and linked to cancer, was found in all San Luis Obispo waterways, and more than 80% of samples in Stanislaus county, which holds Modesto and portions of the Central valley.

The health threat is difficult to determine because pesticide laws do not require companies to assess many of the health threats common to Pfas, like immunotoxicity, reproductive harm, or hormone disruption, in part because the regulators do not have proper resources, Subramaniam said. Regulators also do not consider the cumulative effect of drinking water contaminated with the Pfas, then eating produce containing its residues.

“The fact that the chemicals are permitted is largely because we’re not considering all the ways that they can harm us,” Subramaniam added.

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Amid pressure from the powerful agricultural lobby, the proposal to fully ban Pfas pesticides by 2035 failed, but the moratorium on new pesticides survived. The California Farm Bureau, in its opposition to the bill, wrote that the legislation is an “overly broad and unworkable approach that departs from science-based regulation”. It argued that California farmers would be put at an economic disadvantage with little health benefit to the public.

The legislation still includes a new requirement that pesticides come with warnings to farmers that alert them that they are using Pfas with health and environmental risks. Susan Little, California legislative director for EWG, said most farmers are unaware that they are spreading Pfas on food crops.

The legislation also gives local leaders more power to limit the pesticides’ use, and defines the pesticides as Pfas, which is in line with most scientific definitions. California’s pesticide office currently uses a narrow definition of Pfas that is favored by industry in part because it excludes smaller compounds like those used in pesticides.

Advocates say the legislation is especially needed with the Trump administration rushing to approve more Pfas pesticides for use. California’s pesticide office also recently reapproved the Pfas insecticide sulfoxaflor despite that its approval has repeatedly been struck down by state and federal courts over its high toxicity to honeybees and other pollinators.

Little said advocates are “disappointed” the ban did not make it into the final bill, but added the bill, if approved by the state senate, “will continue to address and reduce the use of Pfas pesticides in California”.

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This 1947 adobe home has found a new life as a ‘modern California hacienda’

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This 1947 adobe home has found a new life as a ‘modern California hacienda’


This is the latest instalment of The Inside Story, Wallpaper’s series spotlighting intriguing, innovative and industry-leading interior design.

Nestled at the base of the San Gabriel Mountains in Sierra Madre, a 1947 adobe home – a traditional building method using sun-dried bricks of organic materials – has been reimagined. Removed from the noise and polish of Los Angeles, this neighbourhood is shaded by California oaks, eucalyptus and pine, and shares its hillside with bears. It’s an unusual setting for a design story.

(Image credit: Michael P.H. Clifford)

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mid-century california home redesigned by Kirsten Blazek

(Image credit: Michael P.H. Clifford)

The home’s transformation began with a fire that destroyed much of the structure, leaving only the original adobe brick wall standing. Rather than rebuild from scratch, designer Kirsten Blazek of A1000XBetter chose to work with what remained.

‘The overall vision was to maintain as much of the original character and style of the home as possible, while making it more functional for modern living,’ she explains. New rooms were added – a kitchen, a primary suite, a family room – though the expansion was restrained. ‘We worked mainly within the original footprint,’ the designer notes, ‘only adding a small amount of square footage for the primary closet.’

mid-century california home redesigned by Kirsten Blazek

(Image credit: Michael P.H. Clifford)

mid-century california home redesigned by Kirsten Blazek

(Image credit: Michael P.H. Clifford)

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mid-century california home redesigned by Kirsten Blazek

(Image credit: Michael P.H. Clifford)

On the original adobe side, the layout was left untouched. The hallway windows, original to the 1947 build and ‘one of [Blazek’s] favourite features’, were preserved. ‘I wanted the house to feel like a modern California hacienda,’ she says of her guiding aesthetic, ‘and embraced that through every colour choice and finish.’



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CDFW News | California Fish and Game Commission Takes Emergency Action to Prevent White Shark Take and Reduce Potential Interactions Between Hooked Sharks and Swimmers

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CDFW News | California Fish and Game Commission Takes Emergency Action to Prevent White Shark Take and Reduce Potential Interactions Between Hooked Sharks and Swimmers


Prosecutors Honored for Their Work to Protect Wildlife; Southern Resident Killer Whale Named CESA Candidate

Anticipating a larger presence of white sharks in Southern California as a result of warmer El Niño ocean conditions, the California Fish and Game Commission (Commission) adopted emergency regulations at its June 17-18, 2026 meeting to further protect the large ocean predator and reduce the potential for dangerous interactions with ocean users. These regulations will prohibit the use of certain fishing gear from beaches and nearshore that are used to hook large sharks and could create hazards for nearby beachgoers.

Forecasted warmer waters shift the preferred range for juvenile white sharks northward from Mexico and lead them to stay in California nearshore areas later in the year. The emergency regulations protect not only white sharks but also people recreating in the ocean, decreasing the risk of dangerous human encounters with sharks that are hooked with wire leaders from piers and beaches.

Specific gear types used to target large sharks, including hooks greater than 1.5 inches in maximum inside measurement and wire or metallic lines and leaders, will be prohibited when recreational fishing from shore or within 1,000 yards of shore from Pigeon Point (San Mateo County) south to the U.S.-Mexico border. Shore fishing includes beaches, banks, piers, jetties, breakwaters, docks and other man-made structures connected to the shore. Unless extended, the emergency regulations will expire 180 days after being filed with the secretary of state. The Commission may pursue up to two 90-day extensions of the emergency action and, ultimately, may propose continuing the restrictions through a regular rulemaking if the regulations prove to be effective.

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Prosecutor of the Year

Commissioners recognized two deputy district attorneys who have demonstrated their dedication to protecting California’s natural resources and have effectively collaborated with the California Department of Fish and Wildlife (CDFW) to prosecute wildlife crimes. San Luis Obispo County Deputy District Attorney Ken Jorgensen and San Diego County Deputy District Attorney Michael McCann were presented with the Prosecutor of the Year Award for 2025.

Jorgenson’s work resulted in a landmark $165,000 settlement and injunctions in a case involving rare plant habitat destruction, and in another case a $12,500 fine and five years of probation for often under-prosecuted commercial fishing violations.

McCann assisted in the prosecution and investigation surrounding a global wildlife trafficking ring connected to illegal drug and firearm trade. The investigation disrupted a sophisticated trafficking network and resulted in multiple felony and misdemeanor charges, with more anticipated.

Southern Resident Killer Whale

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The Commission named the southern resident killer whale (orca) a candidate species for listing under the California Endangered Species Act (CESA). This population of orcas inhabits ocean waters from British Columbia to California and is estimated to now number as few as 75.

Orcas face threats such as limited availability of prey; Chinook salmon are a primary food source and have experienced population decline across the entire West Coast range of orcas. The species’ abundance has also been impacted by past practices of capture for live display.

CDFW will have one year to complete a review on the status of orcas, of the best available science, before the Commission can make a final decision on CESA listing. Orca is currently listed as endangered under the federal Endangered Species Act and is considered depleted under the federal Marine Mammal Protection Act.

Western Spadefoot

Continued from the Commission’s April meeting, a decision to consider CESA candidacy for western spadefoot frog was postponed to the August meeting to give environmental advocates and the solar industry additional time to collaborate on proposing exceptions to CESA protections that would be allowed under Fish and Game Code Section 2084.

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Meeting Participation and Next Meeting

Commission President Eric Sklar, Vice President Darius Anderson and Commissioners Samantha Murray and Erica Zavaleta were in attendance for both days of the June Commission meeting. Commissioner Jacque Hostler-Carmesin was in attendance for the first day. The meeting was held in Sacramento.

The complete agenda for the meeting, along with supporting information, is available on the Commission website. Archived video of past Commission meetings is available online. The next regularly scheduled meeting of the Commission is scheduled for Aug. 12-13, 2026, at the California Natural Resources Agency building in Sacramento. Participants are encouraged to attend in person, with options available for Zoom or phone; for more information visit the Commission website.

The Commission authorized public notice of upcoming potential regulation changes related to:

Harpoons and Flying Gaffs Allowance: A discussion hearing is scheduled for Aug. 12-13 and an adoption hearing Oct. 14-15 on amendments to regulations related to allowing use of harpoons and flying gaffs in the recreational tuna fishery.

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Media Contacts: 
Krysten Kellum, CDFW Communications, (916) 825-7120
Alicia de la Garza, CDFW Communications, (916) 754-7237



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Bug infestation found at California Department of Education headquarters, employees sent home

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Bug infestation found at California Department of Education headquarters, employees sent home


Bugs have once again been found inside the California Department of Education headquarters in downtown Sacramento, prompting employees to leave the building and raising concerns among workers about returning to the office.

Employees were instructed to go home after bugs were detected in the building, according to state workers and union representatives.

They say it’s not the first time. Union representatives and employees confirmed to CBS News Sacramento that this is the second bug-related incident at the headquarters in the past two years.

“If they’re in one place, it’s very easy for them to be throughout the entire building,” said Anica Walls, president of SEIU Local 100.

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The discovery has renewed concerns about workplace safety, particularly as state employees prepare for expanded return-to-office requirements.

“Let’s do what’s necessary and make sure that our employees stay safe and that when they are in the building, they’re not contracting or taking home anything that they don’t need to be,” Walls said.

The California Department of Education confirmed the building experienced a bed bug incident in 2024. However, officials said they are still awaiting pest control reports to determine whether the insects recently discovered are bed bugs or another species.

State workers say they want a permanent solution rather than temporary fixes.

“It’s smart to fix the problem the correct way rather than trying to just mitigate the issue and shut down certain floors,” Walls said.

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While most state agencies are scheduled to move to a four-day-a-week, in-office schedule beginning next week, California Department of Education employees will continue their current hybrid schedule of two in-office days per week through the end of the year.

In a statement, the department said it is working with the Department of General Services and pest control specialists to inspect the entire building.

“As stated in the message to our employees, we are actively coordinating follow-up inspections and remediation efforts and will provide updates as soon as additional information becomes available,” the department said.

Union representatives said the department was responsive during the previous infestation and expressed hope for a quicker resolution this time.

“Last time, they were really receptive to the conversations with employees, which was good. We’re hoping for another good outcome, hopefully just a little more expedient this time,” Walls said.

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CBS News Sacramento also spoke with a local pest control company, which said that if the insects are confirmed to be bed bugs, treatment could take several months.

The process typically involves repeated inspections and treatments every one to two weeks, including high-heat treatments reaching approximately 160 degrees and extensive cleaning to prevent the infestation from returning.



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