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Watershed areas such as the land around the El Capitan Reservoir was assessed in the 2020 Watershed Survey by the City of San Diego. Photo: City of San Diego

Watershed Survey Helps Maintain San Diego Regional Water Quality

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The City of San Diego Public Utilities Department conducts regular surveys of its watersheds to monitor and maintain high water quality within those watersheds.

The City recently released its 2020 Watershed Sanitary Survey. Conducted and issued every five years since 1996 as required by California law, the report identifies actual or potential causes of local source water contamination that might adversely affect the quality and treatability of City of San Diego water.

The updated information is used as a basis for future watershed management and planning efforts. City of San Diego tap water meets all state and federal drinking water health standards, the primary standards for treating and monitoring water.

“Development and other activities in our watersheds can have a profound influence on the quality of our water,” said Shauna Lorance, director of the City of San Diego Public Utilities Department. “The Watershed Sanitary Survey is important for identifying potential negative impacts and ways to better protect our watersheds.”

Watershed protection critical to safe, reliable water supply

Everything that is on the land, whether a natural feature or a human activity like grazing cattle at this area near the Sutherland Reservoir, is part of the watershed. Photo: City of San Diego

Everything that is on the land, whether a natural feature or a human activity like grazing cattle at this area near the Sutherland Reservoir, is part of the watershed. Photo: City of San Diego

A watershed is an area of land that drains water into a specific body of water. Everything that is on the land, whether a natural feature or a human activity, is part of the watershed. Many places San Diego County residents live, work, and play in are watershed areas.

There are 11 westward draining watersheds in San Diego County.  Six are within the City of San Diego: San Dieguito River, Los Peñasquitos, Mission Bay and La Jolla, San Diego Bay, San Diego River, and Tijuana River.

The City of San Diego’s nine water supply reservoirs have a combined capacity of over 550,000 acre-feet and more than 900 square miles of watershed lands tributary to these reservoirs. Local runoff from watersheds captured in City reservoirs accounted for about 11% of total drinking water production from 2015-2020.

Six of San Diego County's watershed regions lie within the City of San Diego boundaries. Map: City of San Diego

Six of San Diego County’s watershed regions lie within the City of San Diego boundaries. Map: City of San Diego

Reservoirs are critical components of the regional water supply system, as water is supplied to nearly two million people in the City of San Diego and neighboring communities. Protecting these water sources is vital to providing healthy and safe drinking water. The public can assist in preventing watershed damage through source reduction and preventing stormwater runoff.

The 2020 survey noted these changes since the 2015 Watershed Sanitary Survey:

  • Total area of residential and commercial development in the watersheds increased slightly by about 2%.
  • A total of 412 new construction permits were recorded for onsite wastewater treatment systems located within the watersheds.
  • The number of fires occurring in the watersheds increased by about 8%.
  • Leaking underground storage sites decreased by 53%.
  • Sanitary sewer overflows increased by 36%.

The survey offers recommendations including continuing and expanding public awareness programs to help protect watershed, and implementing projects and programs to improve land management and water quality of source waters. All recommendations will be used for future watershed management and planning efforts.

The full 2020 Watershed Sanitary Survey, as well as past surveys, is available on the City’s website.

Editors Note: The City of San Diego is one of the San Diego County Water Authority’s 24 member agencies working collaboratively with the Water Authority to increase the value, reliability, and safety of water for ratepayers in San Diego County.

Helix Water District Logo Square officers for 2021

Helix Water District’s New Customer Assistance Program Starts Today

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The Helix Helps Customer Assistance Program starts today, April 5, and offers a one-time credit of up to $300  to help Helix Water District’s residential customers  who live in a single-family home, are behind on their water bill and can demonstrate loss of income due to the Covid-19 pandemic.

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Olivenhain Municipal Water District Logo landscape design workshops

OMWD Awarded Federal Funding to Complete its Advanced Metering Infrastructure Project

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Encinitas, Calif. — Olivenhain Municipal Water District has been awarded $500,000 in grant funding from United States Bureau of Reclamation for OMWD’s Advanced Metering Infrastructure project. The award was made available through USBR’s Water and Energy Efficiency Research Program for Fiscal Year 2021.

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Otay Water District Logo

Otay Water District Announces Launch of 2021 WaterSmart Landscape Contest

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Spring Valley, Calif. – The Otay Water District announces the launch of the 2021 WaterSmart Landscape Contest. The contest awards the title of “Best in District” and a $250 nursery gift card to the customer judged to have the most attractive, water-efficient yard. The deadline to enter is Friday, May 14, 2021.

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Hooded mergansers glide across Sweetwater Reservoir. Photo: Sweetwater Authority Reservoirs

Sweetwater Authority Reservoirs Provide Safe Public Recreation 

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One year into the coronavirus pandemic, San Diego County’s reservoirs and lakes have provided welcome opportunities for safe, accessible outdoor family recreation.

After shutting down in March 2020, facilities began to slowly reopen through the summer months by carefully implementing safety guidelines, including increased sanitation, social distancing, and restricted attendance to allow San Diegans to resume their favorite hiking, fishing, horseback riding, and bird watching activities.

Sweetwater Authority owns and maintains two popular recreation spots in San Diego County, Sweetwater Reservoir near Spring Valley and Loveland Reservoir, near Alpine.

Primarily a local water supply for Sweetwater Authority’s 200,000 customers in National City, Chula Vista, and Bonita, the agency has created recreational opportunities at the reservoirs. Fishing programs are offered at both reservoirs and a riding and hiking trail at Sweetwater Reservoir is operated by the County of San Diego.

Sweetwater is one of several regional water agencies that offer recreational opportunities at reservoirs and lakes. Helix Water District operates Lake Jennings, a hot spot for trout fishing. The City of San Diego also provides boat rentals and paddle-boarding at several of its reservoirs.

Safety first to protect the public 

Sweetwater Authority owns and maintains two popular recreation spots in San Diego County, Sweetwater Reservoir (above) near Spring Valley, California, and Loveland Reservoir, further east near Alpine, California. Photo: Sweetwater Authority

Sweetwater Authority owns and maintains two popular recreation spots in San Diego County, Sweetwater Reservoir (above) near Spring Valley and Loveland Reservoir near Alpine. Photo: Sweetwater Authority

Both fishing programs and the trail at Sweetwater Reservoir are designed to protect public health and the drinking water supply while benefiting the community.

“At Sweetwater Authority, part of our mission is finding the balance between human and environmental needs,” said Sweetwater Authority Board Chair Hector Martinez. “The recreation opportunities at our two reservoirs are a great example of how we achieve that balance. We can share these beautiful resources with the community while continuing to protect the local drinking water supply for our customers.”

A California Fishing License is required to fish at both reservoirs, and there are rules in place to ensure the protection of the water supply and sensitive habitats surrounding its reservoirs. For more information on current hours, fees, and COVID-19 safety, go to: www.sweetwater.org/fishing.

“The Board and I are proud to offer these recreation programs,” said Martinez. “We encourage the community to take advantage of these opportunities to get outside and enjoy the beauty of our water and the environment.”

USBR Grants-water efficiency-WaterSMART grants

Over $2.7 Million in Federal Grants Awarded to San Diego Water Agencies

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The U.S. Bureau of Reclamation has awarded three San Diego County water agencies a total of $2,788,500 in 2021 WaterSMART Water and Energy Efficiency Grants. A total of $42.4 million in grants was given to 55 projects across 13 states to improve water reliability and efficiency, conserving more 98,000 acre-feet of water per year.

“The Water Authority and its member agencies have been leaders in helping customers improve water efficiency, which ultimately helps our communities become more resilient to both dry years and the large-scale impacts of climate change,” said Water Authority Board Chair Gary Croucher. “This grant money is added value for our region as we continue to do our part for people and the planet.”

Projects awarded grants in San Diego County

  • The City of Oceanside’s Advanced Metering Infrastructure and Pipeline Improvement Project (Phase III) — $2,000,000 grant. The project includes upgrades to 11,519 existing primarily residential water meters to smart meters connected to the city’s customer feedback portal. Approximately 62 broken and leaking pipe segments will also be replaced. Website: www.ci.oceanside.ca.us/gov/water/watersmart/default.asp
  • Olivenhain Municipal Water District Advanced Metering Infrastructure Water Use Efficiency Project — $500,000 grant. The project will expand advanced metering infrastructure with the installation of 4,181 meter transmitting units on existing AMI-capable meters. The meters will be integrated with the district’s customer engagement portal to provide customers near real-time water-use data. Website: www.olivenhain.com/new-meter-reading-technology
  • San Diego County Water Authority WaterSmart Contractor Incentive Program — $288,500 grant. The project will expand an existing rebate program for irrigation devices, including smart irrigation controllers and high-efficiency nozzles. The expanded program will encourage large landscape and commercial customers to install an estimated 8,000 stations for smart irrigation controllers, 330 irrigation controllers, 18,000 high-efficiency sprinkler nozzles, 75 flow sensors, and 30,000 square feet of drip irrigated landscaping. Website: www.sdwatersmartcip.com/

The Bureau of Reclamation grants support the new Executive Order on Tackling the Climate Crisis at Home and Abroad to increase resilience to climate change impacts. The agency’s WaterSMART program works cooperatively with states, tribes, and local entities to plan and implement actions that increase water supply reliability through investments to modernize existing infrastructure and attention to local water conflicts.

Over $2.7 Million in Federal Grants Awarded to San Diego Water Agencies

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March 24, 2021 – The U.S. Bureau of Reclamation has awarded three San Diego County water agencies a total of $2,788,500 in 2021 WaterSMART Water and Energy Efficiency Grants. A total of $42.4 million in grants was given to 55 projects across 13 states to improve water reliability and efficiency, conserving more 98,000 acre-feet of water per year.

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Crane lifts valve from roof

Heavy Metal: Facility Upgrades Enhance Flexibility of Regional Water System

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San Diego County Water Authority crews recently replaced two pickup truck-sized valves at the agency’s Pressure Control and Hydroelectric Facility in central San Diego – each valve weighing about 35,000 pounds.

The replacement project took place during a scheduled shutdown of a portion of Pipeline 5, which delivers untreated water throughout the county. The pressure-control facility is a key piece of the Emergency and Carryover Storage Project, which ensures water is available around the region if imported water deliveries are disrupted.

Several large-diameter valves in the facility control the pressure and quantity of water delivered to reservoirs and water treatment plants in eastern and southern parts of the county. In addition, a hydroelectric turbine in the facility generates supplemental electricity that reduces the Water Authority’s energy costs while supplying surplus power to the region.

Facility upgrades for infrastructure efficiency

“The new valves will allow the facility to function efficiently at both low and high water flows, depending on regional demand,” said Kirk Whitaker, a senior engineer at the Water Authority. “The project is part of ongoing improvements that enhance the flexibility of our regional water delivery system.”

To perform the valve replacement, a large crane lifted the existing valves out of the facility through the roof and placed them onto flatbed trucks for delivery to a disposal and recycling site. The new valves were then lowered into the facility through the roof and fitted with new 42-inch pipeline sections. Concrete was poured to build pedestals that secure the valves in place.

The new valves were produced in Germany and transported to San Diego by ship. The valve installation process took four days to complete.

Enhancing regional aqueduct operations

The Pressure Control and Hydroelectric Facility serves an important function in improving aqueduct operations and enhancing the flexibility of the Water Authority’s extensive water delivery system. The $21 million facility was completed in 2007 and pressurizes a 22-mile-long section of the Water Authority’s large-diameter Pipeline 5 between San Marcos and Mira Mesa.

The pipeline previously conveyed water in one direction only, from north to south, by gravity. This limited the Water Authority’s ability to move water around the county in the event of a supply disruption. Upgrades to Pipeline 5 now allow water to be transported either north or south using water stored at San Vicente Reservoir, which greatly improves pipeline operations and ensures that water can continue flowing to member agencies.

Sweetwater Authority Logo 2019Sweetwater Authority Logo 2019

Sweetwater Authority Offers Community Safe Outdoor Recreation Opportunities at Two Local Reservoirs

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An angler casts a line, hoping for a nibble. Nearby, hikers and equestrians enjoy a morning walk along the water. Overhead, dozens of bird species, some of which are endangered, travel home to their nests made safe by protected areas around the reservoir. This idyllic scene is just another Saturday morning near Sweetwater Reservoir in Spring Valley, Calif.

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Padre Dam Board Votes to Return Money to Customers Through Rates

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March 17, 2021, Santee, Calif. – Padre Dam Municipal Water District’s Board of Directors unanimously approved using the recently received $1,157,552 rebate from the San Diego County Water Authority to offset the District’s next pass‐through rate increase from the San Diego County Water Authority. This action will result in a direct benefit to customers by the reduction or potential elimination of a water pass through increase in 2022.

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