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.
- 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.
- 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.
- 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.
- If you have a sample container that is the collapsible
type, before taking the sample, inflate the container by gently
blowing into the bottle.
- 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
- All samples must be kept cold. Bottles
must be labeled with address of sample, date collected, and analysis
- Complete Sample Information form (WSI). The
following information must be completed:
System ID number
Group A or B
Sample location (must be address of home from which sample was
Collection Date and time