California Water Digest — 2026-07-25

20 item(s) from 8 source(s); 14 flagged (🔔) for your blog keywords.

📰 News & Policy

🔔 WEEKLY WATER NEWS DIGEST for July 19-24: California dodges a bullet on Colorado River cuts; Could water rights scuttle Sites?; Will the “super” El Niño fill Tulare Lake?; Can cities make deals to lessen data center downsides? A Caltech professor says yes; and more …

Maven’s Notebook — Fri, 24 Jul 2026 16:30:54 +0000

A wrap-up of posts published on Maven’s Notebook this week … Note to readers: Sign up for weekly email service and you will receive notification of this post on Friday mornings. Readers on daily email service can add weekly email service by updating their subscription preferences. Click here to sign up! [cmtoctableofcontents] In California water news this week … California dodges a bullet on Color…

🔔 Is Ken Jennings trolling me…?

SJV Water — Fri, 24 Jul 2026 23:24:19 +0000

You know groundwater has hit the big time when Jeopardy! has a subsidence question. And, yes, I yelled out the answer in my living room.

🔔 July 2026 ACWA News Available

ACWA — Fri, 24 Jul 2026 15:00:14 +0000

Reading Summary: July 2026 ACWA News Available

Key Facts

The July 2026 ACWA News digest is gated behind member login, limiting full public access to content
The EPA is rescinding regulatory determinations and extending the compliance deadline for PFOA and PFOS Maximum Contaminant Levels
Fresno Irrigation District’s Herndon Canal surface water is flowing into the Biola area for the first time
San Bernardino Valley Municipal Water District board unanimously voted to lower its annual agency rates
SCV Water is beginning a recycled water conversion project expanding use in Santa Clarita to Fair [Oaks]

Who Is Affected

California water ratepayers served by ACWA member agencies statewide
Communities near Contra Costa, Eastern Municipal, Walnut Valley, Otay, and Sacramento Suburban water districts
Residents of Biola (Fresno County) gaining new surface water access
Water utilities facing PFAS compliance under EPA PFOA/PFOS rules
Valley Center Municipal Water District community, mourning the loss of former GM Gary Arant

Policy/Legal Angle

EPA rescission of regulatory determinations and extended PFOA/PFOS compliance deadlines signal a rollback posture on drinking water contaminant rules
AB 1096 (Lead and Copper Regulation) and California’s related policy handbook are under active ACWA comment
California Air Resources Board Advanced Clean Fleets regulation amendments are drawing ACWA pushback
OMB Federal Financial Assistance regulations affecting water infrastructure funding are flagged
State Fiscal Year 2026-27 Drinking Water State Revolving Fund is subject to ACWA comment letters to the State Water Resources Control Board

Blog Angles

PFAS Rollback Watch: The EPA’s extension of PFOA/PFOS compliance deadlines and rescission of regulatory determinations raises urgent questions — which California water systems were counting on those rules, and how does this leave ratepayers exposed?
Rate Relief or Red Flag?: San Bernardino Valley MWD lowering rates is unusual in the current fiscal climate — what’s driving it, and is it sustainable or a political move ahead of budget pressures?
Groundwater Recharge Innovation: The first-ever flow of FID’s Herndon Canal surface water into Biola deserves a deeper look — is this a recharge project, a supply equity story, or both, and could it be a model for other underserved San Joaquin Valley communities?

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Deadline to file for host of water board seats is Aug. 7 - SJV Water

Google News — CA water — Thu, 23 Jul 2026 21:30:15 GMT

Deadline to file for host of water board seats is Aug. 7 SJV Water

🔔 COMMENTARY: Advancing groundwater recharge in the Sacramento River basin: A strong technical foundation - Maven’s Notebook

Google News — groundwater/SGMA — Thu, 23 Jul 2026 15:56:10 GMT

COMMENTARY: Advancing groundwater recharge in the Sacramento River basin: A strong technical foundation Maven’s Notebook

🔔 DAILY DIGEST, 7/22: Will the “super” El Niño fill Tulare Lake? A Fresno engineer thinks it’s almost certain; San Joaquin Valley Watershed Studies: A roadmap for a changing climate; The Sacramento region has a climate change resilience plan—now comes th - Maven’s Notebook

Google News — Bay-Delta — Wed, 22 Jul 2026 16:00:22 GMT

DAILY DIGEST, 7/22: Will the “super” El Niño fill Tulare Lake? A Fresno engineer thinks it’s almost certain; San Joaquin Valley Watershed Studies: A roadmap for a changing climate; The Sacramento region has a climate change resilience plan—now comes th Maven’s Notebook

Gallagher, Thompson to mark start of $8M Oroville Wildlife Area recreation project - KRCR

Google News — state agencies — Fri, 24 Jul 2026 16:12:57 GMT

Gallagher, Thompson to mark start of $8M Oroville Wildlife Area recreation project KRCR

🔔 DAILY DIGEST, weekend edition: California dodges a bullet on Colorado River cuts; New report documents challenges and applications for telemetered water monitoring; CA can’t replant its forests fast enough to keep up with wildfires; Mexico and US team-up to build desalination plant in Baja; and more …

Maven’s Notebook — Fri, 24 Jul 2026 16:00:39 +0000

[cmtoctableofcontents] Several news sources featured in the Daily Digest may limit the number of articles you can access without a subscription. However, gift articles and open-access links are provided when available. For more open access California water news articles, explore the main page at MavensNotebook.com. On the calendar today … MEETING: Central Valley Flood Protection Board beginning at…

🔔 Kern water district inks deal to keep water flowing to homes hear Patterson

SJV Water — Fri, 24 Jul 2026 22:39:18 +0000

Reading Summary: Kern Water District Deal for Diablo Grande

Key Facts

Kern County Water Agency (KCWA) and Western Hills Water District signed a contract to deliver up to 1,500 acre-feet/year to the 600-home Diablo Grande development in western Stanislaus County
KCWA forgave $14 million in debt Western Hills had accumulated since stopping payments in 2019
Western Hills will pay KCWA $37,500/year as an administration fee, plus an optional $50,000/year for up to 1,000 additional acre-feet over five years
Western Hills transferred 4,791 acre-feet of banked Kern County water back to KCWA as part of the settlement
The deal voids all contracts back to 1998 and was driven by KCWA’s threat to cut off water by May 31

Who Is Affected

600 Diablo Grande homeowners facing $400/month water bills going forward
Western Hills Water District, which serves Diablo Grande exclusively
Kern County Water Agency, a State Water Project contractor
Berrenda Mesa Water District, whose original 8,000 acre-feet contract initiated the arrangement

Policy/Legal Angle

The Department of Water Resources refused to add Western Hills as a direct State Water Project contractor in 1998, forcing the roundabout KCWA exchange arrangement
The “exchange” mechanism — Western Hills taking aqueduct water while KCWA debited its Pioneer groundwater bank — raises questions about flexibility and limits of SWP contractor rules
No court decisions cited, but the debt forgiveness and contract termination back to 1998 carry significant legal and financial implications for public agency accountability

Blog Angles

The $400/month question: What does Diablo Grande reveal about the true cost of serving small, isolated water districts dependent on distant infrastructure — and who should bear that risk?
DWR’s contractor policy: The entire 25-year problem traces back to DWR refusing to add a new SWP contractor. Is that policy still serving Californians well, or does it create perverse workarounds?
Debt forgiveness precedent: KCWA is a public agency that forgave $14 million owed by another public district — what does that mean for ratepayers and fiscal accountability in Kern County?

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🔔 Recycled Water Conversion to Begin at Fair Oaks Park and Nearby City Medians

ACWA — Thu, 23 Jul 2026 16:00:04 +0000

Reading Summary: Recycled Water Conversion at Fair Oaks Park, Santa Clarita

Key Facts

SCV Water will convert irrigation at Fair Oaks Park (17468 Honey Maple Street, Santa Clarita) and nearby City of Santa Clarita street medians from potable to recycled water
Project approved by SCV Water Board of Directors on July 21, 2026; construction expected complete winter 2026
Conversion covers 250,000 square feet of landscaping and will free up 11.4 million gallons of potable water annually
Recycled water will be supplied via the Vista Canyon Water Factory, enabled by the Vista Canyon Recycled Water Main Extension (Phase 2B) completed February 2024
This is the first customer conversion project implemented under SCV Water’s Purple PREP (Planning, Readiness & Effectuating Program)

Who Is Affected

SCV Water ratepayers (residential and commercial) in the Santa Clarita Valley
City of Santa Clarita (median irrigation infrastructure)
Users of Fair Oaks Park

Policy/Legal Angle

No specific laws or court decisions cited; the project operates under SCV Water’s internal Purple PREP program, designed to reduce customer conversion costs and remove adoption barriers — a local policy mechanism worth watching as a replicable model

Blog Angles

Purple PREP as a Replicable Model: Is this customer-conversion framework being adopted elsewhere in California, and could it serve as a statewide template for accelerating recycled water adoption under existing drought resilience mandates?
Potable Water Savings at Scale: 11.4 million gallons annually from one park and some medians — what would valley-wide or statewide replication of similar conversions yield, and how does that compare to California’s recycled water expansion targets?
Infrastructure-First Strategy: The Vista Canyon pipeline extension preceded this conversion by over two years — does this sequence (build infrastructure, then convert customers) reflect best practice, and who paid for that Phase 2B buildout?

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Plan to save Lake Mead faces hurdles - Newsweek

Google News — CA water — Wed, 22 Jul 2026 17:19:00 GMT

Plan to save Lake Mead faces hurdles Newsweek

🔔 Virginia study on groundwater, data centers calls for tighter water regulations - Audacy

Google News — groundwater/SGMA — Fri, 24 Jul 2026 20:20:53 GMT

Virginia study on groundwater, data centers calls for tighter water regulations Audacy

Herbert Hadley DEARDORFF - The Press Democrat

Google News — state agencies — Wed, 22 Jul 2026 03:48:06 GMT

Herbert Hadley DEARDORFF The Press Democrat

CAL MATTERS: California can’t replant its forests fast enough to keep up with wildfires

Maven’s Notebook — Fri, 24 Jul 2026 16:00:18 +0000

California’s wildfires are destroying forests faster than the state can replant them, and federal cuts are making the gap worse. One expert says the crisis is barely known — even though it could reshape half the state’s forests by 2071. By Rachel Becker, CalMatters This story was originally published by CalMatters. Sign up for their newsletters. A windowless warehouse on the outskirts of Davis she…

🔔 Kern water districts officially pledge just 1/3 of state ask for delta tunnel costs

SJV Water — Fri, 24 Jul 2026 22:01:53 +0000

Reading Summary: Kern Water Districts’ Delta Tunnel Funding Pledge

Key Facts

Kern County Water Agency approved a funding agreement pledging $11.7 million of the $33 million requested by DWR — just 35% of the ask — for the Delta Conveyance Project’s planning phase.
The shortfall leaves DWR with a 20% funding gap in its $300 million planning-phase budget; the full tunnel is estimated at $20 billion (environmental groups say $50 billion).
Kern districts’ participation level dropped sharply: from ~45% of contracted water supplies in March 2025 to just 16% in 2025.
The agency secured an amended agreement capping its exposure: if water costs exceed $55 per acre-foot, contributions toward construction are reduced and partially deferred.
Metropolitan Water District committed $141.6 million toward planning in 2024 and has paid $25.7 million so far.

Who Is Affected

Kern County Water Agency and its 13 member water districts
DWR (Department of Water Resources), which faces a funding gap
Delta farmers near Hood and Tracy, concerned about salinity from reduced Sacramento River flows
Metropolitan Water District of Southern California, the largest State Water Project contractor
Sacramento-San Joaquin Delta ecosystems dependent on Sacramento River freshwater flows

Policy/Legal Angle

No specific statutes or court decisions are cited, but the funding structure operates under State Water Project contracts, which govern how contractors pay for infrastructure based on contracted water allocations.
The amended funding agreement introduces “off ramps” — contractual exit provisions allowing Kern to pause or stop payments for significant project changes — which DWR has not yet signed.
DWR’s stated fallback position (“adjust workload and prioritization accordingly”) suggests administrative flexibility but no binding commitment to a reduced scope.

Blog Angles

The “road toll” analogy breaks down: If districts opt out of paying and later can’t access the tunnel, what happens to their State Water Project allocations during a catastrophic Delta levee failure? This raises a real equity and reliability question worth exploring.
The Met vs. Kern divergence: Why is MWD paying full freight ($141.6M committed) while Kern slashed its share to a third of the ask? What do Southern California urban contractors know — or accept — that agricultural Kern districts don’t?
The $20B vs. $50B gap: DWR and environmental groups are $30 billion apart on cost estimates. Who has audited these numbers, and what assumptions drive the difference? That discrepancy alone could anchor a deep-dive post.

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NCAR: Why only a few wildfires become extreme

Maven’s Notebook — Fri, 24 Jul 2026 15:59:45 +0000

Hot, dry conditions set the stage, but it takes a short-lived local window of opportunity to produce an extreme wildfire By David Hosansky, NCAR Hot and dry conditions have become synonymous with the risk of extreme wildfires. But a new paper argues that such conditions are not by themselves sufficient for blazes, and most warm years do not result in the burning of exceptionally large areas. The r…

🔔 DRI and OpenET are partnering with the Upper Colorado River Commission and the Bureau of Reclamation to expand evaporation monitoring on the Colorado River

Maven’s Notebook — Fri, 24 Jul 2026 15:59:22 +0000

From the Desert Research Institute: DRI and OpenET are partnering with the Upper Colorado River Commission and the Bureau of Reclamation to expand evaporation monitoring on the Upper Colorado River Basin’s largest reservoirs. This summer, new monitoring stations are being established on Flaming Gorge, Blue Mesa, and Navajo Reservoirs. The initiative follows the success of the Lake Powell evaporati…