Over 330 US EPA drinking water and wastewater test methods are featured on
the agency's just-released Methods and Guidance for Analysis of Water
CD-ROM. The CD contains Series 500, 600, 1660 test methods; 40 CFR Parts
136-149; Methods of Chemical Analysis of Water and Wastes; Metals, inorganic
and organic substances in environmental samples; and whole effluent toxicity
methods. It's in PDF format for easy search & retrieval.
See http://www.env-sol.com/solutions/EPAW.HTML for details.