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Facing Shortages, Cities Tap Sewers to Bolster Drinking Water Supply

On a hot day, there’s nothing quite like a refreshing drink of water. But how would you feel if that water was sourced from the sewer?

Mexico to Send Water to Texas Farmers After Trump Threat Over US Treaty

Mexico will make an immediate water delivery to Texas farmers in an effort to address its shortfall under a decades-old water treaty that has drawn tariff threats from Donald Trump, Mexican President Claudia Sheinbaum announced Friday.

California’s Snowpack Report Card is In. What Does It Mean for the Water Supply?

Some measure the year by calendar, by birth dates or by tax returns. For California water managers, the key date is April 1. That’s when researchers push their trusty tubes down into the snow covering the Sierra Nevada to see how much has accumulated just as the wet season typically peaks. How’d we do this water year?

New Desalination Technology Being Tested in California Could Lower Costs of Tapping Seawater

Californians could be drinking water tapped from the Pacific Ocean off Malibu several years from now — that is, if a company’s new desalination technology proves viable. OceanWell Co. plans to anchor about two dozen 40-foot-long devices, called pods, to the seafloor several miles offshore and use them to take in saltwater and pump purified fresh water to shore in a pipeline.

Strong Reservoir and Snowpack Levels Boost California’s Water Outlook

The water outlook in California is bright, with major reservoirs exhibiting strong levels and a near-average snowpack, according to the latest data.

The state’s three largest reservoirs – Trinity, Shasta and Oroville – are currently holding more than 75% of their capacity, a significant boost compared to typical levels for this time of year.

Report: U.S. Water, Sewer Bills Have Increased 24% in Five Years

According to a new comprehensive analysis of drinking water and sewer rates, the combined water and sewer bill for a typical U.S. household has increased by 4.6% from 2023 to 2024 and about 24% in the past five years.

Where San Diego’s Water Comes From, Explained

Water in California, while always a hot topic, entered the national spotlight at the start of 2025. Where the San Diego region’s water comes from, how it’s provided and who’s in charge of what are big questions that water professionals address every day.

What are the biggest sources of water for San Diego County?

In 2024, about 60% of the region’s water supplies were from the Colorado River, about one-third were from local sources and the rest was from Northern California through the State Water Project. The State Water Project is operated by the State of California and is separate from the Central Valley Project operated by the federal government.

Regardless of the source, all the water delivered to homes and businesses across the region meets strict state and federal quality standards.

How has our region’s water supply changed over the years?

In 1991, San Diego County got 95% of its water from the Metropolitan Water District (MWD) in Los Angeles, leaving the region’s water supply outside of San Diego’s control. A lack of local resources left the region susceptible to supply cutbacks from its major single major source. In 1991, MWD imposed an supply reduction of 31%, prompting the San Diego region’s civic and business leaders to demand greater investments and increased control over the county’s water future. In the following three decades, the Water Authority invested  roughly $3 billion in regional water reliability projects. That included cementing the largest water conservation-and-transfer deal in U.S. history to secure conserved water from the Imperial Valley, partnering with a private company to build the nation’s largest seawater desalination plant and super-sizing San Vicente Reservoir by raising the height of the World War II-era dam. Now San Diego has a locally controlled and diversified water supply to make sure the taps always turn on.

SDCWA’s water portfolio over the years.

Why doesn’t San Diego County use much groundwater?

Before 1947, the San Diego region relied heavily on local surface water runoff in normal and wet years, and on groundwater pumped from local aquifers during dry years when stream flows shriveled. As the economy and population grew exponentially, local resources became insufficient to meet the region’s water supply needs, and the region increasingly turned to imported water supplies. Today, groundwater is a small but important resource, especially in places like the South Bay where the aquifers are relatively large. Overall, it accounts for about 5 percent of the region’s water supply portfolio.

What is being done to create additional water supply here in the region?

Coordinating with 22 member agencies to develop long-term, local water reliability is a key component of the Water Authority’s mission. In fact, a growing number of local water sources across the San Diego region are managed by local retail agencies — and they are critical to ensuring long-term supply reliability. Local projects reduce demand on imported supplies and provide local agencies with more control.

In San Diego County, agencies are investing in seawater desalination, water recycling and water purification to create the water reliability our region needs to thrive.

What does the future of water look like for San Diego County?

Even in very dry years like 2025, regional investments mean there’s sufficient water to sustain our economy and quality of life.  In fact, the region has done such a good job securing water, that it’s talking with other agencies across the Southwest about selling some of locally controlled water to combat rate increases in the county and support the larger regional economy.

For more information about San Diego’s water sources, click here.

Trump Orders More Central Valley Water Deliveries — Claiming It Would Help LA Fires

President Donald Trump signed a sweeping executive order Sunday that told federal agencies to “immediately take action” to deliver more Central Valley water and eliminate rules that stand in the way, including endangered species protections. In the new order, Trump cited the Los Angeles fires, even though the actions he is ordering — delivering more water from the federal Central Valley Project — would primarily serve farms.

How Soon Will It Rain in San Diego?

With winds dying down on Friday throughout San Diego County and a ridge of high pressure moving out, we will see some major changes in the weekend forecast that include a significant drop in temperatures, cloudier skies, and, yes, a good chance for some light to moderate rain and snow in our local mountains. The chance for rain comes after Southern California has been pelted with Santa Ana winds for winds and wildfires have sparked up across the region.

Shrinking Colorado River Puts 100M at Risk as Crucial Water Source Could Drastically Impact Nation’s Food Supply

The shelves and prices at your local grocery store could look a little different soon.

The Colorado River, which provides water for about 15% of our country’s agriculture, is shrinking, and the current agreement that divvies up the water usage ends in 2026.