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01-27-15
NEW Added 100 question practice test which shows answers immediately, instead of at the end.
11-10-14
Complete redesign of website to match our Water Distribution Certification website. Also, working on new content to be added soon.

Alluvial Deposit - Relating to mud and/or sand deposited by flowing water. Alluvial deposits may occur after a heavy rain storm.

Aquifer - A natural underground layer of porous, water-bearing materials (sand, gravel), usually capable of yielding a large amount of water.