Updated: Dec 1, 2021
Diminishing water supplies is a world-wide problem. In the United States, with population increase and an increasing decline in water supply, the best current solution is a reduction in water use. To address this problem, many states and communities are imposing water use restrictions. Restrictions to landscape watering is the most common. A great solution to reducing water use in landscaping is greywater irrigation! Using water twice makes sense!
WHAT IS GREYWATER?
Greywater is all wash-water waste generated by a home or business. This is water from the washing machine, the sinks, bathtubs and showers and can be reused! Blackwater, on the other hand, is toilet waste and waste from garbage disposals and dishwashers and contains high levels of nitrogen and pathogens and cannot be used in irrigation.
GREYWATER CAN BE USED FOR IRRIGATION:
Yes, greywater can be used for irrigation; but the codes and regulations on this process varies from state to state. Californians, for instance, have used greywater irrigation systems illegally for many years. Due to these practices, the California Greywater Code was re-written with significant changes. This code designates three types of greywater systems:
Clothes Washer System: This is probably the most commonly used as it is the easiest to implement, but there are restrictions on its use. It can use only a single washing machine in a family dwelling, and must be a domestic, not a commercial machine. This system may only use gravity or the pump from the washing machine itself to irrigate the desired areas in the yard or garden. The washing machine system may use up to 15 gallons per day per person in the household. It does not require a construction permit as long as it does not require cutting of the pipes that exist.
Simple System: This system also serves a one or two family residence. The discharge of greywater is greater than the clothes washer system, and discharges up to 250 gallons per day. A construction permit is needed for a simple system.
Complex System: This is a greywater system that uses over 250 gallons per day, and also requires a construction permit. The simple and complex systems are subject to inspection and possible percolation tests until they are approved.To install a whole-house system is a fairly simple matter in new construction, but is difficult in existing buildings.
BASIC REQUIREMENTS FOR USING GREYWATER:
Two inch covering regulation: The irrigation system using greywater must be covered by 2” of material to avoid contact with the greywater.
Drip system of greywater irrigation: The drip system works the best with greywater irrigation. Spray irrigation is not to be used with greywater. Also, greywater is not to have run-off or ponding, and cannot reach any body of water or storm drain.
No irrigation of crops intended for human consumption: Greywater may not be used for this; and, in addition, human contact with the system should be minimized.
GREYWATER IN THE GARDEN:
Plants can respond better to greywater and the nutrients within than potable water
Don't store greywater for more than 24 hours
Distribute graywater evenly across the garden, don't over water any one area, drip systems are perfect for greywater
Avoid any cleaners containing Boron or high levels of salt, this is toxic for plants.
If using a water softening system, opt for adding potassium instead of salt.
CALIFORNIA'S GREYWATER CODE:
California’s greywater code is found in Chapter 15 of the California Plumbing Code (CPC). (You can download it here: https://greywateraction.org/wp-content/uploads/2014/12/Chapter-15-CA-Plumbing-Code-2016.pdf)
It includes regulations for both “HCD” – the residential code, and “BSC”- the commercial code.
Pacific Vista Landscape Services is focused on water conservation. Re-using your greywater to irrigate your landscape can not only result in water reduction, but is a great way to keep a beautiful garden during drought conditions. Our professional team are experts with the latest irrigation technology and can implement a greywater system for your property. We will even evaluate your current system for free! Contact us and see how we can save you water AND money now AND in the years to come!
Updated: Oct 5, 2021
When backflow protection is necessary, customers are required by their local water company, for instance LADWP, to have an approved backflow prevention assembly installed and tested annually by a certified company. Pacific Vista Landscape Services is proud to be certified in installation, repair, and testing of all approved backflow prevention assemblies in Los Angeles and Ventura counties.
Protecting the public water system from contamination is essential for the safety of our water supply. Cross-connections of pipes between the public water system and private water systems can lead to backflow issues in which untested and possibly unsafe water goes the wrong direction due to backpressure, and can contaminate the public water supply system.
To protect against this, there are Backflow Prevention Programs like LADWP's Backflow Protection Program by the Los Angeles Department of Water and Power and the County of Ventura's Resource Management Agency's Backflow Prevention Program.
As explained by the Los Angeles County Waterworks District, "A cross-connection is any connection between a safe drinking water system and any other untested water source, system, or equipment that may contain unsafe substance. LACWD’s public water systems are designed to keep water flowing in one direction—from LACWD’s water main to the customers’ connections. When an undesirable condition known as backflow occurs, water is allowed to flow in the opposite direction and may bring contaminants or pollutant into the public drinking water supply through a cross-connection.
Backflow is caused by a back siphonage or a back pressure condition in the public water system. Back siphonage may occur when the pressure in the public water system drops below atmospheric pressure and creates a vacuum that may pull unsafe substance into the public water supply. Back pressure may occur when the pressure from a private water system becomes greater than the pressure in the public water system. This difference in pressure may allow unsafe substance from the private water system to enter the public water system. Approved backflow prevention assemblies are designed to prevent backflow of contaminants or pollutants from entering the public water systems."
AT Pacific Vista Landscape Services, we offer low rates to our clients with backflow requirements and also specialize in custom protective cages for the backflow assembly, repairs to existing devices, and offer a free annual reminder for testing and certification. Emergency and after hour service is also available. Contact us today for installation, repairs, and testing by our professional, certified backflow prevention service team and let us ensure your property is in compliance!
Recently California's Governor Newsom expanded the drought emergency declaration to 50 counties in California, signing an executive order asking all Californians to save water by 15%.
Not included in the list is Imperial, Los Angeles, Orange, Riverside, San Bernardino, San Diego, San Francisco and Ventura counties of Southern California. At this time Southern California's drought situation is considered to be not as bad as other counties because it gets it's water from Federal and state water systems and according to the LA Times, "The Metropolitan Water District of Southern California, which imports water from the Colorado River and the north, says it has record reserves in regional reservoirs and groundwater banks — enough to carry it through this year and next. Los Angeles, which is partly supplied by the MWD, similarly doesn’t anticipate shortages, officials said last month." Even though all counties are not under the order, it is important all of California tries to save water to help with continuing drought conditions.
Newsom is asking Californians to voluntarily reduce their water use by 15 percent compared to 2020 levels through simple actions such as reducing landscape irrigation, running dishwashers and washing machines only when full, finding and fixing leaks, installing water-efficient showerheads and taking shorter showers. These voluntary efforts complement specific local conservation mandates already in place in some communities experiencing acute water shortage conditions this summer.
“The realities of climate change are nowhere more apparent than in the increasingly frequent and severe drought challenges we face in the West and their devastating impacts on our communities, businesses and ecosystems,” said Governor Newsom. “The entire state is in a drought today, and to meet this urgent challenge we must all pull together and do our part to reduce water use as California continues to build a more climate resilient water system to safeguard the future of our state. We’re proud of the tremendous strides made to use water more efficiently and reduce water waste, but we can all find opportunities this summer to keep more water in reserve as this drought could stretch into next year and beyond.”
State officials estimate an additional 15 percent voluntary reduction by urban water users from 2020 levels could save as much as 850,000 acre-feet of water over the next year for future use, or enough to supply more than 1.7 million households for a year.
Some of the easiest ways to save water outdoors is listed below from SaveOurWater.com:
Doing even a few of these can make a big difference in your water usage! Our professionals are experts in smart irrigation, drought tolerant trees and plants, soft and hard scapes, combined with good drainage to create landscaped areas that are totally water efficient! Contact us today and see what we can do for you!
