City Participates with EPA in Nationwide Water Data Collection


In the month of November, the City of Spearfish Utilities Department will begin its participation in the Fourth Unregulated Contaminant Monitoring Rule (UCMR4).  The EPA uses the UCMR program to collect data for contaminants that are suspected to be present in drinking water and do not have health based standards set under the Safe Drinking Water Act (SDWA).

The UCMR program started in 1996 to provide for:

  • Monitoring no more than 30 contaminants every 5 years
  • Monitoring large systems and a representative sample of small systems serving less than or equal to 10,000 people
  • Storing analytical results in a National Contaminant Occurrence Database (NCOD)

Occurrence data are collected through UCMR to supports the EPA’s determination of whether to regulate particular contaminates in the interest of protecting public health.

EPA’s selection of contaminates for a particular UCMR cycle, this being the 4th cycle, is largely based on a review of the Contaminate Candidate List (CCL).  The UCMR program was developed in coordination with the CCL.

The CCL is a list of contaminates that:

  • Are not regulated by the National Primary Drinking Water Regulations
  • Are known or anticipated to occur at public water systems
  • Mare warrant regulation under the Safe Drinking Water Act

So what does all this mean for our customers in the City of Spearfish?  Our Utilities Department will be taking samples of the water produced at our 7 Madison Aquifer wells and throughout the city’s distribution system.  These samples will be sent to an approved laboratory and analyzed for the list of chemicals required by the UCMR4 program.  The results will be included in the national database and will be made available to you, our customers.  We are confident in the quality of our drinking water in Spearfish.  Using then Madison Aquifer as our water source, we continue to have some of the best water in the state and nation.  All of our test results and annual reports are available on the city website. 

More information about this program and the test results will be available on the City of Spearfish Website under Public Works, Water, Water Reports, UCMR4 information.  City staff will also be available to discuss this and other Drinking Water information, as requested, for homeowner association groups, business/civic group meetings and individually.  To schedule a meeting, please contact the Public Works office at 605-642-1333.