Water pipelines near actual or potentially contaminated soil, should be based on specifications to resist permeation. The issue here is potential. We have pipelines, railways and trucks carrying chemicals and oil were spills can occur.
Unfortunately water pipelines frequently follow the same highways that have tanker trucks carrying chemicals.
Contaminated soil has the potential to let chemicals into water pipelines in the ground.
If municipal engineers would specify pipes and gaskets that are resistant to POTENTIAL FUTURE contaminants that may end up in the soil around water pipelines, we could avoid future water contamination. Pipe stays in the ground for years, so it only makes sense to go ahead and specify pipes and gaskets for unexpected potential hazards.
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