L.A. Wildfires Spark Crisis: Unsafe Drinking Water
The aftermath of the Los Angeles wildfires has been likened to the impact of a bomb explosion by several observers, highlighting the severe damage caused not only to structures but also to vital infrastructure. Among the pressing concerns is the contamination of the municipal water supply as melted plastics and ash threaten the water pipes, posing significant risks to public health.
Drinking Water Crisis
In response to the crisis, residents in affected areas have been issued warnings against consuming tap water due to the potential for dangerous contamination. Faith Kearns, a scientist with the Arizona Water Innovation Initiative, warns that it's uncertain how long the water will remain unsafe. Drinking water in the impacted regions might cause illnesses such as Giardia or lead to prolonged health issues stemming from exposure to carcinogenic substances.
Water Safety Measures
The Los Angeles Department of Water and Power initially issued a "boil water" advisory, allowing residents to consume water only after boiling it. However, this advisory was soon upgraded to a "Do Not Drink" notice, as boiling does not remove chemical contaminants introduced by the fires, explained Daniel McCurry, an environmental engineering professor. In Pasadena, officials have cautioned against attempting self-treatment of the water, as typical methods like boiling or filtering are ineffective against chemical contaminants.
Infrastructure Risks
Water systems face numerous vulnerabilities, particularly from plastic components such as PVC pipes, which can release toxic volatile organic compounds (VOCs) when they burn. One of these compounds, benzene, is a known carcinogen. If water system parts melt, these hazardous chemicals can contaminate the water and evaporate, contaminating the air as well.
Widespread Implications
Although VOC contamination in Los Angeles is not yet confirmed due to the inability to test in burned areas, experts suggest it is highly likely. Historical precedents, such as the Tubbs Fire in Santa Rosa, provide worrying indications. Andrew Whelton from Purdue University noted that these fires' intense heat points to significant contamination risks, always urging municipalities to prepare for such scenarios.