This is general guidance for Schools and Child Care Facilities. You should consult your lab, consultant or water systems specialist. If you have question the NJDEP has developed a "lead team" to assist with this issue at (609)-292-2957 The New Jersey Water Association is also hosting several lead training sessions this month.
It is very important for schools to understand the sampling process and have a sampling plan in place prior to sampling. There are many differences between sampling under the LCR and sampling in schools, for example, EPA recommends schools collect a 250ml sample instead of a one liter sample.
EPA recommends not conducting pre-stagnation flushing prior to the sampling event and to have the water sit a minimum of 8 hours. However, if the school elects to sample after a long break (i.e. spring break) then the school should flush a day or two before sampling. EPA guidance recommends sampling sites typically used for human consumption such as kitchens and drinking water fountains; however, some schools have elected to sample all taps that are or could be used for consumption.
NJDEP is recommending schools and childcares turn off water outlets that have a result of 15 ppb or higher (EPA guidance recommends 20 ppb or higher). If they are bathroom sinks that need to remain on, Do Not Drink signs should be posted.
If a water system elects to sample in school, the sample results should be provided to NJDEP; however, they will not be used for compliance purposes under the LCR. If the school district samples themselves, it is strongly recommended that they let us know and provide us with a copy of the data.
The EPA's 3Ts lead in schools sampling guidance is available on the EPA's website at: Click Here