1. Monitoring Requirements for Public Drinking Water Supplies: Cryptosporidium, Giardia, Viruses, Disinfection Byproducts, Water Treatment Plant Data, and Other Information Requirements. Proposed Rule;Fed. Reg.,1994
2. Final Rule;Monitoring Requirements for Public Drinking Water Supplies.;Fed. Reg.,1996
3. USEPA. ICR Water Utility Database System Users' Guide 1996
4. USEPA. ICR Sampling Manual 1996