At Nortest Analytical, We strive to provide our northern Arizona clients with: * Quality Water Analysis * Reliable Water Analysis * Fast Water Analysis * Local Laboratory Convenience * Certified Water Operator Consultation * Water Technician Field Services Nortest is an Arizona Department of Health Services (ADHS) licensed laboratory. Nortest participates fully in the annual DMRQA performance testing study required by the EPA for most of our NPDES permit clients. Visit our Certifications/Licensure page to see DMRQA study results. As part of Western Technologies, Inc., Nortest Analytical has long-term stability and an outstanding reputation as "The Quality People".