SAMPLING INSTRUCTIONS FOR NITRATE ANALYSIS OF DRINKING WATER SAMPLES

 

         The samples should be taken as close to the source as possible. If there is a spigot in the well house, use that rather than a tap in a residence on the distribution system.

 

         Disconnect any garden hose or appliance that may be connected to the spigot.

 

         From the spigot or tap, run the water 2 to 3 minutes before taking the sample.

 

         Write the necessary information (time, date, location, etc.) on the label attached to the bottle (this information should match the corresponding information on the request form)

 

         Fill the sample container to the shoulder of the bottle

 

         Complete the accompanying form (Public water systems must include the system ID number, the system name, the source number, whether group A or B and the date and time of sampling if the sample is to be used for compliance purposes).

 

         Deliver the water sample and the analysis request form to the laboratory within 24 hours of sampling.

 

Please contact Twiss Analytical Labs at (360) 779-5141 if you have any questions.