Tag Archive for: Water Supply

Plumbing systems-stagnant water-Shutterstock-Coronavirus

Water Systems in Closed Buildings May Require Flushing and Testing

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Plumbing systems in buildings closed or vacant for long periods may need to be flushed to safely remove stagnant water.

Water provided by the San Diego Water Authority and its 24 member agencies continues to meet all state and federal drinking water standards. But after water leaves the agencies’ distribution systems and enters private service connections, the water quality can deteriorate if water becomes stagnant.

Most commercial and industrial buildings have been partially occupied even during the COVID-19 shutdown, and HVAC and water systems continue to be maintained and operated even though many employees are working remotely. However, building owners and managers should take special care with plumbing systems in buildings that have been vacant or have had periods of low water use to protect the public and employees returning to work.

That’s because plumbing systems must be actively managed and maintained to prevent bacteria growth. Bacteria can flourish in pipes, fixtures and associated equipment (like fountains, cooling towers and HVAC systems) that aren’t used for several days. Schools, for example, commonly flush pipes before kids and teachers return from breaks.

Building owners should prepare plumbing systems

Water agencies and other organizations are providing public notice about plumbing safety; however, it is the responsibility of building owners and managers to address any related issues on their own properties.

Several steps are necessary to prepare inactive plumbing systems for building re-occupancy, and workers performing start-up tasks should wear PPE and receive appropriate training. The steps involve flushing the entire plumbing system with water and testing to ensure “residual chlorine” levels are within the safe range. Testing to ensure effective flushing is recommended; if testing reveals high levels of bacteria in the system, additional steps are needed.

8 Key Steps for Reopening Buildings

Develop a comprehensive water management program for your water system and all devices that use water. Guidance to help with this process is available from CDC and others.

  1. Develop a comprehensive water management program for your water system and all devices that use water. Guidance to help with this process is available from CDC and others.
  2. Ensure your water heater is properly maintained and the temperature is correctly set.
  3. Flush your water system.
  4. Clean all decorative water features, such as fountains.
  5. Ensure hot tubs/spas are safe for use.
  6. Ensure cooling towers are clean and well-maintained.
  7. Ensure safety equipment including fire sprinkler systems, eye wash stations, and safety showers are clean and well-maintained.
  8. Maintain your water system.

The CDC has more details about these recommendations.

Coronavirus: The Workers Keeping the Water Flowing

/in , , /by /BBC Newsby Cormac Campbell

The way we use water is one of the many aspects of daily life that has changed in lockdown.

Commercial use may be down, but domestic use has increased.

With greater levels of hand washing, tea drinking and gardening, demand has risen “considerably,” according to David Murray, a field technician for the water network.

Mr. Murray has worked with water for 35 years and has seen how our recent usage has put pressure on the system.

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Regulators Express Concerns About Huntington Beach Desalination Project

/in , , /by /The Orange County Registerby Martin Wisckol

The Poseidon desalination plant proposed for Huntington Beach could be facing rough waters ahead, as several regulatory officials on Friday expressed concerns over the controversial plan..

During a Regional Water Quality Control Board workshop held online, three of the agency’s six board members persistently pressed local officials about the need, consumer cost and environmental harm of the $1 billion project.

The board is tentatively scheduled to a vote July 31 on one of two permits still needed by Poseidon Water before it can negotiate a final contract and begin construction on a project that that company has been pursuing for two decades. The proposal needs four votes from the regional board before it can go before the Coastal Commission for its last permit.

The Orange County Water District, the prospective purchaser of the water, has been attracted to the desalination project because it’s drought-proof and would protect its service area of 2.5 million residents from shortages of imported water. Currently, about 23% of the district’s water is imported.

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How Much Water Do We Really Need to Drink?

/in , , /by /CBS Sacramento (CNN Wire)

Here’s some welcome news: Water can work wonders for your health.

The humble liquid comprises about 60% of our body weight and allows our internal organs to perform at their best. Water regulates our body temperature, keeps our joints lubricated and carries nutrients to our cells. Water also provides moisture to skin, ensuring a bright and radiant glow.

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Questions Simmer About Lake Powell’s Future as Drought, Climate Change Point to a Drier Colorado River Basin

/in , , /by /Water Education Foundation (Western Water)by Gary Pitzer

Sprawled across a desert expanse along the Utah-Arizona border, Lake Powell’s nearly 100-foot high bathtub ring etched on its sandstone walls belie the challenges of a major Colorado River reservoir at less than half-full. How those challenges play out as demand grows for the river’s water amid a changing climate is fueling simmering questions about Powell’s future.

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Let’s Refill Lakes Mead & Powell Now

/in , , /by /Sustainable Watersby Brian Richter Quoted: San Diego County Water Authority

As of Monday, the National Oceanic and Atmospheric Administration’s forecast for this year’s expected water supplies in the Colorado River is at 59% of average. That’s not good news.

If that prediction proves true, this will be one of the driest water years since Lake Powell was constructed nearly 60 years ago. The volume of water stored in Lake Powell each year is affected by three primary factors: the amount of water flowing into the reservoir after ‘Upper Basin‘ water users have extracted water for their use, minus water released from the reservoir to support Lower Basin water users, and minus evaporation from the reservoir itself. Lake Powell will lose – by my estimation — about 22 feet of water this year, or about 2.1 million acre-feet of storage.

At that point, the reservoir will be 60% empty.

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Opinion: Pure Water Monterey Expansion Proposal Falls Short

/in , /by /Monterey Heraldby Fred Meurer, Bill Kampe, Norm Groot and Joe Gunter

The board of Monterey One Water recently voted not to certify a supplemental environmental impact report for an expansion of Pure Water Monterey. While the expansion was a technical concept that might provide additional water for the Peninsula, the Board action injected some much-needed clear thinking and foresight into a critical topic for the Monterey Peninsula. It’s not about desal versus expansion or public versus private ownership.  It’s about creating an adequate and reliable water supply for our future.

Initially, the expansion was described as a backup to the Monterey Peninsula Water Supply Project yet would provide substantially less water, still leaving the Peninsula with a constrained water supply.

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Lomita Receives Grant to Remove Chemical from Drinking Water

/in , , /by /Daily Breezeby Nick Green

A grant of up to $2 million will allow Lomita to install a filtration system that removes a potentially carcinogenic chemical from its drinking water, allowing the community to resume using groundwater instead of more expensive imported supplies.

The small city had taken its sole well offline last year and drained its 5 million gallon reservoir after the levels of benzene discovered in its groundwater exceeded state drinking water standards.

The community was forced to tap pricey imported water from the Metropolitan Water District to serve its 4,242 residential and commercial customers.

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Opinion: Southern California Doesn’t Have Decades to Figure Out Water Recycling. We Need it Now

/in , , /by /Los Angeles Times

The great achievement of the Metropolitan Water District of Southern California is that few people ever give it much thought. You turn on the faucet and the water comes out. The stuff is reliably clean and safe, and always available.

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Massive Northern California Reservoir Project Scaled Back to Reduce Costs

/in , /by /San Jose Mercury Newsby Paul Rogers

An ambitious plan to build the largest new reservoir in California in 40 years to supply water to homes and businesses from the Bay Area to Los Angeles, along with Central Valley farmers, is being scaled back considerably amid questions about its $5 billion price tag and how much water it can deliver.

Sites Reservoir is proposed for construction in remote ranch lands in Colusa County, about 70 miles north of Sacramento. The reservoir, originally designed to be four times as big as Hetch Hetchy Reservoir in Yosemite National Park and nearly as big as San Luis Reservoir between Gilroy and Los Banos, received more money than any other project two years ago from a water bond passed by state voters during California’s historic drought.

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