As we enter the summer season with its longer and hotter days, your landscape will require more water to stay healthy. Correctly programming your irrigation controller is key to keeping your plants thriving, and your water bill low.
We have had a chance to review the feasibility study for the removal of the Potter Valley Project’s Scott Dam and find the conclusions used to be frighteningly misguided. George Santayana must have had the NOI parties – Mendocino County Inland Water and Power Commission, Sonoma County Water Agency, California Trout and the county of Humboldt – in this project in mind when he made the famous quote, “Those who cannot remember the past are condemned to repeat it.”
Residents of a town in central California won’t have water for several days after the town’s water treatment plant became clogged with algae, officials said. The water outage in Dos Palos started Monday, when the city declared a water emergency and urged the town’s 5,000 residents to use only boiled tap water for drinking and cooking to avoid stomach or intestinal illness.
The Sweetwater Authority recently began a multiyear water main flushing program using innovative technology to clean all 400 miles of pipeline in its system. It’s part of Sweetwater Authority’s use of the latest technology to deliver a safe, reliable water supply to its South San Diego County customers.
Water main flushing cleans pipeline interiors by sending a rapid flow of water through them. Sweetwater’s program is the first in the region to use a new, innovative technology resulting in less environmental impact.
“We’re committed to providing our customers with high-quality water, ensuring that every drop meets safety standards and protects public health,” said Tish Berge, Sweetwater Authority general manager. “We’re also dedicated to providing the safe, reliable water through the use of best available technology and sustainable practices.”
See the system in action in the following video. A Spanish language version is also available.
Traditional flushing methods release water from fire hydrants at a high speed in order to flush out naturally occurring sediments accumulating in water pipes over time. Although the sediment itself is harmless, it can eventually affect water color and taste. The water used to clean the pipes often cannot be captured and ends up in the storm drain system.
The bulk of Sweetwater Authority‘s flushing program now eliminates the need to discharge water from fire hydrants during the cleaning process while delivering the same results.
With the closed-loop system and increased controls, crews are able to effectively and thoroughly flush large sections of pipeline with a single setup and staging area. This more efficient setup is less labor-intensive and allows the crew to maintain a safe hub for operations. Photo: Sweetwater Authority
Crews identify all pipes, valves, and fire hydrants located in the area to be flushed. Next, crews connect one end of a hose to a hydrant and the other end of the hose to the no discharge, or NO-DES flushing unit. The process repeats, connecting a second hose to another hydrant and the other end back into the flushing unit, creating a temporary closed loop.
Once the NO-DES flushing unit is turned on and the hydrants are open, water will push through the loop at high pressure, disrupting any accumulated sediment on the inside of the pipes. The water is pushed through a series of sock-like filters, which remove those sediments and return clean, high-quality water back into the system.
Crews closely monitor the filtration system and water quality to determine when flushing of each pipeline segment is complete.
Additional member water agencies have indicated an interest in the cost-effectiveness of purchasing the NO-DES flushing units for the region and collaborating to create a shared-use program with the technology. Photo: Sweetwater Authority
With the closed-loop system and increased controls, crews are able to effectively and thoroughly flush large sections of pipeline with a single setup and staging area. This more efficient setup is less labor-intensive and allows the crew to maintain a safe hub for operations.
In the National City area 75.8 miles of pipeline was recently flushed. Crews are now completing work in the Bonita area, and then will start work in Chula Vista.
Additional water agencies have indicated an interest in the cost-effectiveness of purchasing the NO-DES flushing units for the region and collaborating to create a shared-use program with the innovative technology.
“Securing a local water supply to ensure the water delivered is of the highest quality through the best technology in our projects and programs helps to maximize value for our customers while also being sustainable,” said Berge.
For more information on the program, go to www.sweetwater.org/flushing.
In these uncertain times, protecting the integrity of water lines, and moving water in them to prevent stagnation, is critical, particularly in schools and manufacturing plants that are experiencing reduced and interrupted water usage during the pandemic.
Millions of ordinary Americans are facing rising and unaffordable bills for running water, and risk being disconnected or losing their homes if they cannot pay, a landmark Guardian investigation has found.
Drought can mean restrictions for watering the lawn, crop losses for farmers and an increased risk of wildfires. But it can also hit you and your power company in the wallet.
House Democrats on Monday released new details about their $1.5 trillion green infrastructure plan slated to come to a vote as early as next week. The legislation, unveiled Thursday, would funnel hundreds of billions of dollars toward transportation and broadband, along with investments in schools and hospitals, with requirements to reduce emissions and clean up industry woven throughout the bill.
The EPA may be masking risks to health and the environment because its Quality System has become outdated and inaccurate, the agency’s internal watchdog reported on Monday.
A large influx from the potable water system into the sewage treatment plant on the grounds of the San Onofre Nuclear Generating Station is the likely reason as much as 7,000 gallons of non-radiological wastewater were released into the ocean in late March.
