In a recent article in Plumbing Engineer, it reads, that San Francisco is becoming the first in the country to require new developments (more than 250,000 square feet) to use on-site water reuse systems for anything that requires non-potable water.
Non-potable water sources include rainwater, reclaimed/recycled water and gray water. While non-potable water is not appropriate for human consumption, it can be used in a myriad of other applications, such as doing laundry, toilet and urinal flushing and cooling tower make-up water. This means that when it comes to the water used in buildings for things such as cooling towers, irrigation and water closets (toilet flushing), developers can’t use drinking water.
Now San Franciscans must implement on-site treatment systems to make use of rainwater, greywater (which includes water from bathroom sinks, bathtubs, washing machines), blackwater (sewage), stormwater or foundation drainage (groundwater) to meet their needs for non-potable water.
The ordinance also requires smaller buildings of 40,000 square feet or more to do a reuse assessment and in five years the city will need to use non-potable water for all irrigation needs and cleaning of public spaces.
More details can be found here.
Aquanomix, experts in water chemistry and water reuse, have timely solutions for San Francisco. Our support is two-fold: custom water reuse systems and intelligent water optimization software. Please contact our California sales engineers for more information on how Aquanomix can help you meet regulations. And, while you’re here, check out some of our details below.