Alarm over lead may be in drinking water at US schools

In the wake of the Flint water crisis several schools have shut off their drinking water due to high levels of result, raising the question: how big is this issue?

Several schools across the US have either detected or acted upon evidence of high levels of leading in their drinking water in the wake of the crisis in Flint, Michigan , with one leading expert warn the cases could mark the tip of the iceberg.

Yanna Lambrinidou, who is an affiliate faculty member in science, technology and communities at Virginia Tech, the university that helped uncover the extremely elevated levels of leading in Flint, said schools are especially vulnerable to contamination from ageing pipes, faucets and valves.

The full extent of the problem in Americas schools with lead, which can affect the brain and nervous system in both children and adults, is unknown.

However, Lambrinidou said a slew of recent cases in which schools have shut off drinking water supplies, from New York to California, could signal a wider problem.

Theres no way to know, she said. I think its only reasonable to assume that these cases are only the tip of the iceberg.

Michael Sharp, the parent of a tenth-grader in Binghamton, New York, received a disturbing letter from the local school district last week.

Seven drinking water outlets in Binghamtons public schools had tested too high for result, the letter stated. The tests had been performed several years ago, but different districts took action only last month, when problematic sinks or fountains were shut down, flushed or dedicated new filters.

I was surprised, because it seemed like a big deal to have resulted in the water, Sharp said, adding: The component that was more upsetting was that they had the results for more than three years and nothing had been done about it.

Like the rest of America, Sharp knew about the crisis in Flint, where water in some homes contained dangerous quantities of leading. Now, following the completion of Flint, schools around the nation are on heightened alert for lead and some are finding levels that are too high.

Last week, the school superintendent in Ithaca, an hours drive from Binghamton, announced that drinking water would be shut off in all school buildings, after water sources in two schools tested high. Other Ithaca school buildings had not tested their water for 11 years, and a number of those older exams had presented fountains with excessive sums of lead.

Lead problems have recently been found in the water in an elementary school near Detroit, and another elementary school in eastern Idaho. In an elementary school in the California wine country town of Healdsburg, tests last year proven high levels of result above federal criteria in a few locations, but Healdsburg officials said more recent exams have been normal and they are continuing to provide bottled water. In Jackson, Mississippi, schools are urgently moving ahead with testing after lead was uncovered during citywide sampling.

The Environmental Protection Agency( EPA) does not require schools that draw from public water supplies to exam for leading.( The public water systems perform their own testing , not specific to schools .) Schools that use their own water systems, such as those drawing from wells, may need to exam some drinking sources every six months.

In 2004, federal lawmakers introduced a bill that would have necessitated schools to test annually for lead and appropriated $30 m for the purpose. But it failed to pass. Last week, New York senator Chuck Schumer, a Democrat, called for the EPA to help investigate their own problems in Ithaca.

Ithaca is a very typical example of local schools that detected problems a long time ago and didnt notify the community, Lambrinidou told. Because of Flint, she added, Were going to be seeing likely more school communities testing because of parental fears.

In Washington DC, where high levels of leading more than a decade ago in city water triggered a congressional investigation, consultants are finding that about one in every 200 drinking water samples in schools exams too high for lead( filters are generally added to the fountains in question ). In Baltimore, the leading problem in schools has been deemed so extensive that children drink bottled water, according to Lambrinidou.

Schools pose special challenges for lead and not only because children, with their developing bodies and brains, are especially vulnerable to toxins. Unlike homes, the water at schools goes through long periods of not being used, including during nights, weekends and holidays and especially the summer.

Even though lead tubes have been banned for decades, result from faucets, valves and solder( ie, the route tubes are connected ), as well as from the ageing tubes themselves, can leach into the water. When water sits in pipes and stagnates, it collects and it assimilates lead, Lambrinidou told. These prolonged stagnations can actually place children at increased risk.

Even regular testing can miss lead particles that flake off old plumbing. Thus, even flushing drinking fountains ie running the water for a long time, to get rid of the stand water may not wash off all the result( and most schools likely do not flush the water frequently anyhow ). Most houses constructed before 2014 will probably have some plumbing that includes result, Lambrinidou said.

If I were a parent, I would organize with other mothers to request that the school, first of all, sample correctly[ and] that any school built before 2014 utilizes lead-certified filters at every single tap, only to make sure infants are protected, Lambrinidou said.

In New York country in 2014, virtually 1.5% of children under six who were tested for result have excessive levels in their bloodone of the highest percentages in the nation( though most children have not been tested, and the figures do not include New York City, where childrens result levels are much lower .)

In Binghamton, the schools superintendent has committed to improvements going forward.

Going into the future, we commit ourselves to testing our drinking water sources every three years. We are obliging ourselves to do that, superintendent Marion Martinez said last week, according to the Press& Sun Bulletin of Binghamton. She said that while there was no legal testing requirement from New York nation or all federal departments, we have a moral requirement.

Mr Sharp said he was not especially alarmed for his daughter, but he took the opportunity to discuss a basic civics lesson.

They talked at length, he told, about the bigger problems of why is there not a better system for testing the water.

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