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Water Testing



In October, 2017 AUSD voluntarily partnered with ACC Environmental Consultants and EBMUD to test the water at drinking fountains and faucets in its facilities. 

Both the US Environmental Protection Agency (EPA) and the State of California set “action levels” for lead at 15 parts per billion (PPB). An “action level” is the threshold at which action must be taken to ensure potable status.

So far, the vast majority of samples came in with lead concentrations of below 15 PPB. Faucets or fountains with water that had lead concentrations exceeding 15 PPB were immediately shut off, and staff are investigating the source of the problem.

Several letters describing the findings were sent to school communities last fall in response to parent/guardian inquiries. The remaining school principals received letters for their families on January 17, 2018.

The chart below provides links to the reports from every school site.



School Site Water Testing Results

How was the Water Tested?

To determine the lead concentration in water, ACC Environmental Consultants collected two samples from each faucet and drinking fountain at every facility in the district.

The first sample was a “first-draw” collection. This sample measures the concentration of lead in the water after the fountain hadn’t been used for at least 8 hours (e.g., first thing in the morning).

The second sample was a “post-flush” collection. This sample measured the collection of lead in the water after the water ran for at least 30 seconds.

The samples were collected in 125 milliliter bottles preserved with nitric acid and submitted under standard chain of custody protocols to an accredited local laboratory. There the samples were analyzed for lead in accordance with the EPA SM3113B Test Method. 

California Assembly Bill 746

California Assembly Bill 746, which was published on October 12, 2017,requires community water system to test lead levels at all California public K-12 schools sites constructed before January 1, 2010. The law went into effect January 1, 2018; the deadline for testing is July 1, 2019. AUSD initiated started its own testing in the fall of 2017.


You can find more information about the bill here.