Ooops so yet another good reason to Make Your Own Water with an Atmospheric Water Generator.
Note that the WaterMainBreakClock website is the love child of the PVC Association. I’m betting that PVC is no better than HDPE when it comes to the Houdini of hydrocarbons…BENZENE.
The National Sanitation Foundation (NSF) Standard 14 & 61 has listings for potable water applications, but do they stand up to the Frack Attack? Nope!
The site, http://trenchlessonline.com/stating-their-case-pvc-vs-hdpe/,weighs the pros/cons of PVC vs HDPE and attempts to answer the question (I bold faced for emphasis), “Is the pipe material resistant to permeation in contaminated soils/groundwater?” and here is the answer from the PVC spokesperson…. “It is far better and more sustainable to use pipes that are inherently well suited for their operating environments, including exposures to contaminated soils. This has contributed greatly to PVC pipes’ rise to become the most-installed product for new water and wastewater systems. Utilities have acquired a true appreciation of PVC pipes’ low-maintenance, corrosion-free performance and resistance to permeation by hydrocarbons at levels normally encountered“.
Normally encountered? Crude oil pipeline spills and frack brine and frack chemical spills are not normal (neither is fracking in residential neighborhoods) and so there we should have an immediate sense of dread since our Arlington water director responded to me “To date we have only used HDPE in residential replacement projects none of which are in a high risk zone. However, PVC pipe has been a standard pipe material for small diameter water and sewer lines in Arlington and many other communities for many years”.
ol’Benzene worries me and in my research I repeatedly found statements such as “The listing that follows does not address chemical combinations”. This link shows a numbering system for individual chemicals:
1 – High Resistance
2 – Limited Resistance
3 – No Resistance
Benzene has limited resistance at 104 degrees fahrenheit for PVDF. Polyvinylidene fluoride is a more expensive polyvinyl by a factor of 8 than PVC and so don’t look for your city to man up to a more expensive piping.
For PVC, Benzene has no resistance.
As for HDPE, Benzene has limited resistance (over an hour?) at 68 degrees fahrenheit.
Previously I blogged about Benzene in soil can put your health at risk if it gets into your drinking water and this link, https://barnettshalehell.wordpress.com/2016/02/23/arlington-using-hdpe-drinking-water-piping-benzenes-favorite-houdini-trick/ has a letter from the Senior Manager of Standards at the American Water Works Association responding to me saying (I boldfaced for emphasis)…. “AWWA does have several standards on HDPE pipe, and we do include information in those standards that alerts users that should be cautious where hydrocarbon contamination may be an issue. The following note is included in those standards: