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U.S. Pressures Mexico for Violating the 1944 Water Treaty

Water has become a source of internal and external dispute for the Mexican government in recent months. On November 25, the U.S. State Department reported on a meeting between Mexican and U.S. officials in which, it claims, it “pressed” Mexico to comply with its obligation—stipulated in the 1944 Water Treaty—and supply “the maximum possible amount” of water to users in Texas. “The shortfall in water deliveries has exacerbated the shortage in Texas and contributed to hundreds of millions of dollars in crop losses,” they warned.

The demand echoes months of complaints made by farmers in the southern United States, Texas Governor Greg Abbott, Agriculture Secretary Brooke Rollins, and Republican Senator Ted Cruz, some of the voices that have most pressured Mexico to comply with what was agreed in 1944, in the bilateral treaty that manages the distribution of water from three rivers: the Colorado River, the Rio Grande, and the Conchos River, for the population of both countries.

Supreme Court Urged to Decide if Diverting Water in California Counts as Government ‘Theft’

A legal battle over California water rights has reached the doorstep of the U.S. Supreme Court, raising a fundamental constitutional question: When the government commandeers water for environmental reasons, is it merely regulating a resource or physically seizing private property?

The Liberty Justice Center filed an amicus brief last week in the case of United Water Conservation District v. United States, asking the high court to clarify the boundaries of the Fifth Amendment. The brief argues that diverting water specifically for government use should be classified as a “physical taking,” a designation that would mandate just compensation for property owners.

California Adds 2.9 Billion Gallons of Drinking Water Through New Infrastructure Projects

California has added an estimated 2.9 billion gallons of drinking water to its annual supply following the completion or groundbreaking of eight state-funded water infrastructure projects this fall, according to state officials. The projects — located in communities from Orange County to the Bay Area and the Sierra — include wastewater treatment upgrades, recycled water systems and new desalination facilities.

State data shows the work is supported by about $590 million in grants and low-interest loans, much of it from the Clean Water and Drinking Water State Revolving Funds. The investments are part of a broader effort to expand local water supplies and modernize aging systems as the state faces more volatile weather patterns. More than 1 million Californians are expected to benefit from the latest round of projects.

But Where Will the Water Come From?

California can still wring water out of its rivers — in theory, and only if you’re willing to pay an increasingly steep premium for it.

Take Sites Reservoir, which could become the first new major reservoir in California in decades. It would pull water from the Sacramento River to fill a valley in the coast range with enough water for roughly 3 million households, then distribute it to the local farmers and Southern California cities that would partly fund its construction.

California Strongly Objects to Trump’s Plan to Pump More Delta Water South

The Trump administration plans to weaken environmental protections for threatened fish in California’s Sacramento-San Joaquin River Delta and pump more water to Central Valley farmlands, according to letters obtained by the Los Angeles Times.

The letters show Gov. Gavin Newsom’s administration strongly criticizing the Trump administration plan.

Loveland Reservoir Levels Cause Concern for East County Residents

Residents who frequent Loveland Reservoir are again raising alarms about water being drained from the area’s largest public open-space reservoir. The concerns come three years after the reservoir was lowered to deadpool levels, killing off the fish population and severely impacting recreation.

Now, locals fear the reservoir may be headed down the same path.

Brown Grass Cost a Famed Golf Course a Big Tournament and Highlighted Hawaii Water Problems

High up on the slopes of the west Maui mountains, the Plantation Course at Kapalua Resort provides golfers with expansive ocean views. The course is so renowned that The Sentry, a $20 million signature event for the PGA Tour, had been held there nearly every year for more than a quarter-century.

“You have to see it to believe it,” said Ann Miller, a former longtime Honolulu newspaper golf writer. “You’re looking at other islands, you’re looking at whales. … Every view is beautiful.”

California Sets Initial State Water Project Allocation at 10% After Beneficial Rainfall

California is beginning the annual water planning process for the upcoming year with a conservative estimate of the water it will deliver across the state, while noting that the recent wet weather is helping out, authorities said Monday.

The state Department of Water Resources announced an initial allocation of 10% of requested supplies for the State Water Project in the new water year, which runs from Oct. 1 through Sep. 30, saying the low starting percentage reflects current hydrological conditions, existing reservoir storage, and an assumption of dry conditions through the rest of the year.

Santa Fe Irrigation District Customers to See Rate Increases in January

At its Nov. 20 meeting, the Santa Fe Irrigation District Board of Directors unanimously approved rate increases for its potable and recycled customers that will take effect at the start of the new year, Jan. 1, 2026.

Customers will receive a notification by mail with more details about the impact on their bills and when they can expect the increase to be reflected in their statements, according to a district news release.

Experts Issue Warning as Major Us Lakes Plunge Toward Historic Lows — Here’s What’s Happening

Experts are sounding the alarm as Texas enters yet another year of punishing drought — pushing major lakes toward historic lows and raising concerns for communities across the Hill Country.

South-Central Texas has been stuck in a rainfall deficit since 2022, with San Antonio hit especially hard. According to a report from the San Antonio Express-News, the city is now short nearly 45 inches of rain. That kind of prolonged dry spell doesn’t just wilt lawns — it drains the region’s lifelines: its lakes.