General

EPA
Office of Groundwater & Drinking Water
EPA small system info
Office of Solid Waste
USGS

GROUPS:
Water Environment Federation
American Water Works Assn
National Rural Water Assn

State information

ARIZONA:
Arizona Department of Environmental Quality
ADEQ Rulesletters
Arizona small utilities association
Arizona Department of Health Services

NEVADA:
Nevada Division of Environmental Protection
NDEP- Laboratory Services
Water Quality Standards for Surface Waters
TMDLs

CALIFORINA
Department of Drinking Water Environmental Monitoring