Water Quality Testing

Water Quality Testing

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In February 2018, the State of New Hampshire adopted Senate Bill 247 "Preventing Childhood Lead Poisoning from Paint and Water." This bill requires that by July 1, 2019, all schools and licensed childcare facilities in the state complete testing for lead in drinking water at all locations where water is available for consumption by children.

The water testing protocol for Senate Bill 247 (SB247) consists of collecting one liter of water from each fixture first thing in the morning, before there is any water used in the building. This is referred to as "stagnant lead" and is intended to represent worst-case conditions. Lead is not naturally occurring in water but can leach out of plumbing fixtures as the water sits stagnant over long periods of time.

To meet the requirements of SB247, the District has recently completed testing of 48 water fountains and sinks located at Harold Martin School, Maple Street School, and Hopkinton Middle and High Schools: all the locations at which children could obtain drinking water at the Hopkinton School District. Most locations showed levels well below the drinking water lead advisory, however, two locations were found to have elevated levels. These locations were immediately taken out of service and will remain out of service until the fixtures are corrected and testing indicates that lead is below the action level. While the ultimate goal is for zero lead exposure, the action level in drinking water is currently set at 15 parts per billion (ppb) or 0.015 milligrams per liter (mg/L) as the threshold to implement remedial actions.

Testing results for the two locations that exceeded the threshold are as follows:

Testing LocationSample DateLab Result DateStagnant Lead, ppb (mg/L)
Harold Martin - 2nd Floor Staff
Room/Computer Lab
February 25, 2019March 8, 201917 ppb (0.017 mg/ L)
Maple Street - Learning CenterMarch 19, 2019April 1st, 201932 ppb (0.032 mg/L)

The state has additional background information and resources available that you can find on the NH
Department of Environmental Services website, https://www.des.nh.gov/organization/divisions/water/dwgb/lead-drinking-water.htm

Results for each of the schools are below:

Harold Martin School Results
Maple Street School Results
Hopkinton Middle High School Results
HMS Results (tabular)
MSS Results (tabular)

HMHS Results (tabular)

Testing from 2017/2018

Additional testing from HMHS / Tabular

Additional testing from MSS / Tabular

SAU Office Results / Tabular

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