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Desalination Turns Ocean Water into Drinking Water — So Why Hasn’t it Solved Droughts?

More than 70% of the Earth’s surface is covered in water, but only 0.5% it is actually accessible to us. Removing salt from ocean water, known as desalination, can create drinkable water during a time of extreme drought and soaring demand. So what’s the problem?

Water Conservation-A side by side look at before and after photos of the Rancho San Diego Association landscape renovation, completed with assistance from the County's Landscape Optimization Service. Photos: Courtesy Rancho San Diego HOA

Spring Valley HOA and Watershed Benefit From Landscape Optimization Service

Conserving water and reducing pollution are two of many benefits from a new program in San Diego County.

Through a partnership between the County of San Diego’s Watershed Protection Program and the San Diego County Water Authority, residences and businesses in unincorporated areas of the county became eligible for newly enhanced water-use efficiency rebates in 2021. The Waterscape Rebate Program saves money for residential, commercial, and agricultural customers who make landscape upgrades to improve the region’s climate resilience and reduce the flow of pollutants into waterways.

The new concierge-style assistance program helped members of a Spring Valley homeowners association benefit from available incentives and rebates. As a result, residents saved money on landscape upgrades while reducing the flow of pollution into waterways and conserving water.

Rancho San Diego Association, the first HOA to complete a project through the program and a customer of Otay Water District and Helix Water District, replaced nearly 40,000 square feet of unused grass and installed smart irrigation timers. Photo: Courtesy Rancho San Diego Association

Rancho San Diego Association, the first HOA to complete a project through the program and a customer of Otay Water District and Helix Water District, replaced nearly 40,000 square feet of unused grass and installed smart irrigation timers. Photo: Courtesy Rancho San Diego Association

To make applying for rebates easier for large landscapes, the county added a Landscape Optimization Service, a unique technical assistance program for large-scale landscaping projects. The program helps applicants with large landscapes, such as HOAs and commercial properties, navigate the requirements, overcome barriers, and maximize their rebate eligibility.

LOS staff analyzes estimated water and cost savings, which details how quickly the project will pay for itself. The program also offers discounted designs to participants.

The finished project is estimated to reduce water use by almost two million gallons annually. Their total project costs prior to the rebate were approximately $120,000. After the rebates, the HOA paid just $13,000 for the project. Photo: Courtesy Rancho San Diego Association Landscape Optimization ServiceThe finished project is estimated to reduce water use by almost two million gallons annually. Their total project costs prior to the rebate were approximately $120,000. After the rebates, the HOA paid just $13,000 for the project. Photo: Courtesy Rancho San Diego Association Landscape Optimization Service

The finished project is estimated to reduce water use by almost two million gallons annually. Their total project costs prior to the rebate were approximately $120,000. After the rebates, the HOA paid just $13,000 for the project. Photo: Courtesy Rancho San Diego Association

VIDEO: Learn more about the program and see the Rancho San Diego HOA transformation

First of its kind assistance program

“Many of our larger customers, such as HOAs, are run by volunteers who don’t have the time or resources to undertake large landscape projects,” said Joni German, Water Resources Specialist at the Water Authority. “Most of their landscapes were put in during the 1970s, and many are ready for a water-efficient upgrade. This partnership with the County enables us to offer HOA customers a first-of-its-kind program with assistance from start to finish.”

Rancho San Diego Association, the first HOA to complete a project through the program and a customer of Otay Water District and Helix Water District, replaced nearly 40,000 square feet of unused grass and installed smart irrigation timers. The project is estimated to reduce water use by almost two million gallons annually. Total costs prior to the rebate were estimated at $120,000. After rebates, the HOA paid $13,000 for the project.

Currently, seven San Diego County HOAs are working through the process of removing common area grass with the support of County of San Diego contractor Environmental Incentives.

Their project is estimated to reduce water use by almost two million gallons annually. Their total project costs prior to the rebate were approximately $120,000. After the rebates, the HOA paid just $13,000 for the project.

The project is estimated to reduce water use by almost two million gallons annually. The total project costs prior to the rebate were approximately $120,000. After rebates, the HOA paid $13,000 for the project.

“The County is proud to partner with HOAs, like the Rancho San Diego Association, to help protect local waterways by transitioning to a more sustainable landscape,” said Scott Norris, Land Use Environmental Planning Manager with the County Water Protection Program. “We look forward to expanding the Landscape Optimization Service in the coming years to assist more properties in upgrading their outdoor space and helping protect water quality.”

Sustainable landscapes produce multiple benefits, which include reducing water use, enhancing habitat, increasing stormwater retention, and decreasing runoff.

The enhanced incentives include rebates starting at $3 per square foot for turf replacement, $60 per smart controller station, $65 per rain barrel, and up to $450 per cistern. In addition to offering technical assistance to upgrade larger landscapes on multifamily and commercial properties, a cost-share is available for agricultural growers to make water-saving upgrades.

Water customers in unincorporated San Diego County can determine their eligibility at SanDiegoCounty.gov/WatershedRebates. The Landscape Optimization Service is actively recruiting new participants.

Protecting our watershed by conserving water

The Waterscape Rebate Program helps to protect local waterways by reducing pollutants that enter storm drains. When irrigation systems overflow from landscaping, runoff may carry pollutants like pesticides, herbicides, and fertilizers into the storm drain system and cause the same adverse effects as runoff from rainfall. Reducing turf helps reduce irrigation use and runoff.

The program includes outreach and education to commercial, industrial, and residential properties in unincorporated areas of the county. San Diego County is also offering programs with rebates for upgrades, including rain gardens, gutters, permeable pavement, and regular septic system pumping.

(Editor’s note: The Helix Water District and Otay Water District are two of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)

How California’s Highly Anticipated Drought Rules Will Likely Impact San Diegans

San Diego’s top water managers have pleaded for months with state officials in Sacramento not to adopt mandatory drought restrictions similar to those imposed by then-Gov. Jerry Brown in 2015.

For now, it appears their concerns have been heeded. Gov. Gavin Newsom recently laid out a pathway for curtailing water use that gives local jurisdictions significant flexibility over how hard to push residents to conserve.

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Few Strong Landfalling Atmospheric Rivers Reach California

Few landfalling atmospheric rivers in the current water year have reached California, now in the third year of a statewide drought.

The latest update from the Center for Western Weather and Water Extremes, Scripps Institution of Oceanography at UC San Diego, shows that Water Year 2022 started strong in October, but weaker storms did not ease dry conditions.

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Landfalling atmospheric rivers

The CW3E report, Distribution of Landfalling Atmospheric Rivers over the U.S. West Coast During Water Year 2022: Summary Through March, was published April 7.

“While Water Year 2022 began with an exceptional AR over California in October, the state only experienced strong or greater magnitude AR conditions FIVE times, resulting in three straight water years of below normal activity,” according the report.

The report shows that the “lack of impactful events over consecutive years” – water year 2021 and water year 2020, combined with the current water year, has resulted in three straight years of below normal activity. Bottom line: If California hoped strong atmospheric rivers would end the current drought this water year, that’s not happening, at least so far. And the two previous years were a bust, creating extremely dry conditions across the state.

CW3E and Water Authority partnership

The San Diego County Water Authority partnered with the Scripps Institution of Oceanography, Center for Western Weather and Water Extremes, at UC San Diego in 2020 to better predict atmospheric rivers and improve water management before, during, and after those seasonal storms. The Center and its partners share best practices in forecast-informed reservoir operations, increased research around atmospheric rivers and droughts, and develop strategies for mitigating flood risk and increasing water supply reliability.

“Through our partnership with CW3E and the AR forecasting tools they’ve developed, it better prepares us in management of our water resources using regional storage,” said Jeff Stephenson, Water Resources Manager with the San Diego County Water Authority, in 2021. “This storage, in conjunction with developing multiple water supply sources in the San Diego region, has prepared us for years when rainfall levels are below normal in the region.”

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For additional details and graphics go to: https://bit.ly/38rSTNE.

Atmospheric rivers-drought-California drought-climate

(Editor’s Note: Atmospheric river analysis by Chad Hecht, Julie Kalansky, & F. Martin Ralph. This analysis is considered experimental.)

Record Drought Conditions Across West Raise Concerns for Summer Dry Season

The current multi-year drought across the West is the most extensive and intense drought in the 22-year history of the U.S. Drought Monitor. Precipitation deficits during the first three months of 2022, across parts of the western U.S., are at or near record levels. As the climatological wet season ends across portions of the West, with below average snow cover and reservoirs at or near record-low levels, concerns for expanding and intensifying drought and water resource deficits are mounting.

During March, the average contiguous U.S. temperature was 44.1°F, 2.6°F above the 20th-century average. This ranked in the warmest third of the 128-year period of record. The year-to-date (January-March) average contiguous U.S. temperature was 36.3°F, 1.2°F above average, ranking in the middle third of the record.

The March precipitation total for the contiguous U.S. was 2.26 inches, 0.25 inch below average, and ranked in the driest third of the 128-year period of record. The year-to-date precipitation total was 5.66 inches, 1.30 inches below average, ranking seventh driest in the January-March record.

Temperatures were above average across much of the West and along the East Coast. California ranked sixth warmest for the January-March period.

California’s Worsening Drought Could Disrupt Hydropower Electricity Generation This Summer

California’s drought is getting worse — and the drying lakes and reservoirs could severely disrupt the state’s ability to generate electricity ahead of the hot summer months.

California’s energy commission says the state gets 10% of its electricity from power plants at dams along lakes and reservoirs. But when there’s no water, those plants are unable to generate power.

California Drought Demands Statewide Water Conservation Effort

California is in the third year of drought and water agencies and officials statewide are urging residents and businesses to increase their water conservation. Governor Gavin Newsom has called on all Californians to voluntarily reduce their water use by 15% with simple measures to protect water reserves.

California DWR-Phillips Station-Water Conservation-snowpack survey-drought

California Drought Demands Statewide Water Conservation Effort

California is in the third year of drought and water agencies and officials statewide are urging residents and businesses to increase their water conservation.

April 1 is typically when the snowpack is at its highest, however the statewide snowpack likely peaked in early-March this year and the Northern Sierra snowpack peaked in mid-January, according to the California Department of Water Resources.

“The conditions we are seeing today speak to how severe our drought remains,” said DWR Director Karla Nemeth on April 1. “DWR has been planning for the reality of a third dry year since the start of the water year on October 1. While DWR has made significant investments in forecasting technology and other tools to ensure we make the most out of the snowmelt we do receive, water conservation will remain our best tool in the face of this ongoing drought and the statewide impacts of a warming climate. All Californians must focus on conserving water now.”

Water conservation critical

While the state continues to take necessary actions to help extend the state’s existing water supply, state agencies are asking all Californians to do their part now to conserve as much water as possible to make it last. Governor Gavin Newsom has also called on all Californians to voluntarily reduce their water use by 15% with simple measures to protect water reserves.

WaterSmart moves to make now

Typical gardening activities such as landscaping, irrigation, and use of fertilizers and pesticides, can lead to stormwater pollution if not done properly. Pollutants such as garden chemicals, soil and sediment, and yard waste can be carried to storm drains by rain and irrigation runoff and end up in our local waterways and ocean without being treated.

Here are some earth-friendly guidelines for WaterSmart gardening and a pollution-free environment.

Plan and Plant Wisely

When planning your landscape, design your landscape to capture water and minimize run-off. Install rain gardens or dry creek beds; use permeable surfaces to allow water to soak into the soil; and direct water from downspouts to landscaped areas. Get planting ideas by checking the California Native Plant Society of San Diego website. When planting, use drought-tolerant or native plants to reduce the amount of water, fertilizers, and pesticides needed and group plants with similar water, sun, and soil needs. Check out the San Diego Water Authority’s Nifty 50 Plants for WaterSmart Landscapes for plants best suited for our climate as well as helpful water-savings tips.

Mulch/Compost Liberally

Use mulch to reduce the need for fertilizers, hold water in the soil, and prevent erosion of exposed soil patches. Sediment is a common pollutant in our waterways and comes from eroded soils. Opt for healthy compost to add nutrients to your soil and further lock in moisture and reduce waste.

Water Smartly

Avoid water waste by repairing leaking or broken sprinklers, adjusting misdirected sprinklers so water does not spray on driveways or sidewalks, and using irrigation methods such as drip irrigation and soaker hoses. Water in short cycles to allow water to infiltrate into the ground, and in the early morning or late evening when it’s cooler outside to reduce water loss due to evaporation.

Learn how much water your lawn and garden actually needs by observing an entire watering cycle (watering guide) or sign up for a free WaterSmart Checkup to receive water-saving recommendations. Rebates may be available to help you prevent over irrigation.

Apply Fertilizers/Pesticides Sparingly

Be sure to read labels and follow directions to avoid improper use and application of fertilizers and pesticides which can lead to stormwater pollution and contribute to toxic harmful algal blooms in both fresh and coastal waters. Only apply chemicals when it is not windy and more than 48-hours from a rainstorm. When possible, use organic or slow-release fertilizers to minimize leaching.

Clean Up Thoroughly

Sweep up spills from fertilizers and pesticides immediately. Blow, rake, or sweep up leaves and debris into a pile for proper disposal into a green waste container with a lid. To make clean up easier and prevent stormwater pollution, protect stockpiles and materials from wind and rain by storing them under tarps or secured plastic sheeting.

Learn more about WaterSmart and sustainable landscaping practices by reviewing the WaterSmart Landscaping Watering Guide in San Diego County and San Diego Sustainable Landscaping Guidelines. Explore even more by participating in the numerous Earth Day/Pollution Prevention events offered throughout San Diego County during the month of April.

San Diego County Mostly Winning its Bout With the Drought

Although California’s governor has made overtures to conserve water, most of the water districts in San Diego County are already ahead of the game.

Gov. Gavin Newsom recently asked everyone to try to conserve up to 20% of their water as the state endures another drought. The Sweetwater Authority in San Diego’s South Bay area, however, said it’s 200,000 customers are already ahead of those savings.

“We’ve been able to manage this drought pretty well so far because of our local investments and local resources,” said Doug Roberts, a program manager for Sweetwater.

Newsom Urged Californians to Cut Water Use by 15%. In February They Saved Less Than 1%

Total water usage in California cities and towns decreased by just half a percent in February compared to the same month in 2020, a far cry from Gov. Gavin Newsom’s goal of reducing urban water use by 15%.

Figures released this week by the State Water Resources Control Board showed that even during a third year of drought, Californians have been slow to step up conservation efforts.