Lead and Copper Sampling Instructions

Lead and Copper sampling is required for all community and non-transient non-community water systems.  Unlike other sampling, lead and copper samples must be taken from inside the home.  The number of samples that a system must collect is based on the system population.  There are specific guidelines for selecting homes to be sampled. 

SAMPLE COLLECTION

1. Make arrangements with the homeowners to coordinate sample collection and discuss sampling procedures or arrange to be allowed into their homes to take the samples.
2. There must be a six-hour period (but no more than a twelve-hour period) during which there is no water use through-out the residence prior to sampling.  Either early morning or evenings are the best sampling times to insure that stagnant water conditions exist.
3. The sample must be collected from a kitchen or bathroom cold water faucet.  Do not run any water prior to sampling.  The object is to get the “first draw” of the water that has sat stagnant in the line.  Make sure that the water does not go through a hose or filter before it reaches the sample container.
4. If you have a sample container that is the collapsible type, before taking the sample, inflate the container by gently blowing into the bottle.
5. Place the open bottle below the faucet and gently open the cold water tap.  Fill the sample bottle to the shoulder of the bottle and turn the water off.  Tightly cap the sample bottle.

AFTER SAMPLE COLLECTION

1. All samples must be kept cold.  Bottles must be labeled with address of sample, date collected, and analysis requested.
2.  Complete Sample Information form (WSI).  The following information must be completed:

·         System ID number

·         System name

·         County

·         Group A or B

·         Sample location (must be address of home from which sample was taken)

·         Collection Date and time