In an effort to ensure everyone has sufficient water supply, researchers have theorized that storm water can aid in drought problem but more studies needs to be conducted to further understand risks.

Water companies are looking at gray water and storm runoffs to possibly add to the supply needed when it comes to drought season. California, known for its notorious annual drought, needs whatever solution science has to offer.

Runoffs may be a solution, as researchers reported, gray water and storm water may have potential status to increase the water supply locally. 

In Los Angeles, the study shows that if rain comes to the region, a household can save water in containment barrels or a water tank that allows them to save water and cut potable water consumption by 5% the most. 

The researchers created a 326 page study that also details the necessary added examination when it comes to the risk involved in using such means because gray water is waste water, untreated and contaminated, sourced from bathroom sinks, shower drainage and washing machine wastes.

Professor Richard Luthy from Stanford agrees that this water source is an advantage but there are huge risks when it comes to pathogens and other contaminants. Think viruses and bacteria. He further stresses that this has to be studied more carefully and a better filtering system will have to be enforced and treatment would have to be very effective and secure. 

Storm water on the other hand can be easily contained, gathered and stored locally. Local residents can store storm water within underground aquifiers.

The advantages are tremendous but so are the risks and impact on human health. Risks are being assessed carefully if they are to be considered as irrigation for dry lands, crops, or lawns, reusable washing source or if highly possible, drinking water. The authors of the study are racking their brains for "rigorous, risk-based guidelines". This kind of activity also needs federal regulation because of the uncertainty it brings when it comes to health and safety standards, as reported.