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Radionuclide Contaminants Sampling Drinking Water     Central District Highlights


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Radionuclide Contaminants Sampling Requirements



What kind of samples are required? 

  • Gross Alpha Particle Activity

  • Radium-226

  • Radium-228

  • Uranium


Note:  A Gross Alpha test may be used as a substitute test for Radium 226 if the Gross Alpha result plus the Radium 228 result does not exceed 5 Picocurie per liter (pCi/L).  A Gross Alpha test may also be used as a substitute test for Uranium if the Gross Alpha result does not exceed 15 pCi/L.


Who is required to sample?


When is Radionuclide sampling required? 

  • Generally, all new community water systems must complete 4 consecutive quarters of radionuclide sampling.

    • The Department may reduce this requirement to 2 quarters depending on analytical results.

  • After the initial monitoring period, regular monitoring will be required once every 3 years.

    • Depending on analytical results the Department may place a water system on reduced monitoring, in which case the system will have to sample for radionuclides once every 6 or 9 years.


For Additional Assistance:



Drinking Water Contacts:   Compliance Assurance Contacts -- Permitting

Central District

Drinking Water Section

3319 Maguire Blvd., Suite 232

Orlando, Florida 32803-3767


All Purpose Fax: 850-412-0467

Dedicated MOR Fax: 850-412-0740

Incident Reporting and Chemical/Bacteriological Reporting Fax: 850-412-0482


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Last updated: March 24, 2014

  Central District Office 3319 Maguire Blvd, Suite 232 Orlando, Florida 32803-3767
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