GUILDERLAND — Results are now in for the lead testing of the Guilderland High School water outlets, and 171 of them have lead above the action level of 15 parts per billion. However, only four of those are fountains or sinks that might be used for cooking or dishwashing, while the great majority are sinks in science labs and classrooms, in bathrooms and locker rooms, and in other types of classrooms.

All outlets exceeding the threshold have — as the state requires — already been taken offline or labeled “for hand-washing only,” said Marie Wiles, district superintendent, in a letter to parents.

Governor Andrew Cuomo signed, on Sept. 6, new mandates requiring public schools statewide to test all outlets for lead and to remediate any above 15 parts per billion. The state is to pay for the remediation although the process for funding has not been announced.

Results for the Guilderland elementary schools were announced in October. The school with the highest number of actionable outlets was — contrary to expectations — Pine Bush Elementary, the only one of the district’s five elementary schools built after federal regulations on the use of lead in construction were issued in the early 1980s. The highest single value was seen in a water fountain in a classroom in Lynnwood Elementary. Lynnwood had a total of 22 sites — 10 fountains and 12 sinks.

The middle school’s results were also announced in October, with 95 outlets throughout the building testing above the limit. Most of those were science lab sinks, and seven were outlets used for drinking or cooking.

The district is currently in the process of deciding what forms of remediation it will take for the various actionable outlets; it has six weeks to decide how to remediate each outlet. One acceptable form is to leave the “hand-washing only” signs up, where this is practical and other sinks are available. Similarly, water fountains can be covered over and left offline, provided that other fountains are available nearby. Other measures being considered include replacing pipes and installing filters.

Guilderland got a headstart on state-mandated testing this summer when it did preliminary tests of 19 outlets across the district and found measurable amounts of lead contamination in five of the school kitchens, although all were below the action threshold. All of those kitchens were immediately repiped, Neil Sanders, the district’s superintendent for business, told The Enterprise at the time. The costs were folded into an approved bond project already underway to upgrade facilities. From that point on, Sanders said, the plan was to remediate only outlets with action levels.