Laboratory Certification

Certified laboratories use approved methods to analyze drinking water compliance samples from public water systems (PWSs). This provides the PWSs with reliable information on the quality of their water. The laboratory results are used to monitor PWS compliance with health-based and aesthetic standards.

Laboratories must:

  • Be certified by the state to analyze drinking water samples for compliance monitoring
  • Successfully analyze proficiency testing (PT) samples at least annually for each method and analyte for which they desire certification
  • Use approved methods
  • Pass periodic on-site audits

 

Out of state laboratories wishing to be certified in South Dakota must provide specific information to achieve certification and to maintain their current certification status. Click here for more information.

Laboratories certified for the analysis of drinking water in the state of South Dakota: