Library of References and Resources
In order to feel more comfortable about the process do a little reading and research on the web. Here are some suggestions to get you started.
Books
Ground Water and The Rural Homeowner, by Roger M. Waller, published by the U.S Department of Interior/United States Geological Survey, ISBN-10: 0607730269, ISBN-13: 978-0607730265
Ground Water Issues and Answers, by George H. Davis, et al, published by the American Institute of Professional Geologists.
Well...What's All That Drilling About?, by Andrew Stone, Jessica Bryan, and Rachel Pender, Published by American Ground Water Trust, ISBN-10: 0964118637, ISBN-13: 978-0964118638
Wells and Septic Systems, by Max Alth, Charlotte Alth, and S. Blackwell Duncan, published by McGraw-Hill Professional, ISBN-10: 0830621369, ISBN-13: 978-0830621361
Web Resources
http://www.agwt.org/info/pdfs/welldrilling.pdf
http://dnrc.mt.gov/wrd/water_op/bwwc/pdfs/waterwelldrillowner.pdf
http://www.epa.gov/safewater/index.html
http://www.agwt.org/gwinfo.htm