Asphalt is used in domestic water reservoirs, fish rearing ponds, and canal liners.

Asphalt has been used in these applications for more than half a century. Hot-mix asphalt is durable, flexible, and can be designed to be either impermeable or porous. As an inert material, it is resistant to the action of most acids, alkalies, and salts.

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From:
Winning with asphalt, Lit. 16
http://www.asphaltroads.org/assets/_control/content/files/cleanerwater.pdf