Regional Water Authority Lab Sample Collection Sample Collection

Prior to collecting any sample:

  • Wash & dry hands
  • Put on gloves
  • Organize bottles
  • Flush system for five minutes

All bottles provided are labeled according to methodology and contain the preservative required by the method. Please do not rinse the bottles since that will remove the preservative.

In ink, complete the sample label and the chain of custody form supplied by the Regional Water Authority. Proper identification, including the date and time of collection, must be submitted.

If samples are collected from a standard faucet, remove aerator, screen, and all attachments from the faucet.

Prior to collecting any sample, turn on the cold water tap and run for four to five minutes or until the water temperature has stabilized, whichever is longer. Then reduce flow so that stream of water is no greater than 1/8 inch in diameter.

Most samples need to be placed in a cooler with ice at the time of collection through the delivery process. The laboratory will supply the coolers and ice packs. Please make sure that the ice packs are frozen prior to beginning sample collection. Specific temperature requirements are documented in each section.

Sample Collection for Inorganic Chemicals, Organic Chemicals and Taste & Odor (Cyanotoxins).