Colorado Department of Public Health and Environment
Denver, Colorado
(303) 692-3048
www.cdphe.state.co.us/lr/Water/Index.htm  
Testing parameters: pH, hardness, nutrients, trace metals, and biological contaminants.

Aspen Consolidated Sanitation District 
Aspen, Colorado
(970) 925-7262 ext.109
www.aspensan.com/lab.html  
Testing parameters: pH, hardness, nutrients, trace metals, and biological contaminants

AmeriSpec Home Inspection Service
Basalt, Colorado
(970) 927-8800
www.amerispec.net/service.cfm/Colorado/#134  
Testing parameters: pH, hardness, nutrients, trace metals, and biological contaminants.

Aspen Waterwise
Aspen, Colorado
(970) 925-1914
www.aspenwaterwiseltd.com  
Testing parameters: pH, hardness, dissolved solids, and Iron.

Advanced Water Systems
Carbondale, Colorado
(970) 963-0229
Testing parameters: pH, hardness, and Iron.