ration systems were provided to those with contaminated private wells. In May 2016, the EPA released a lower Lifetime Health Advisory Level of 70 ppt of combined PFOS/PFOA, leading to more closures of public and private water wells. Due to the half-life of PFAS species found in the community, post-PFAS exposure may be observed 2022–2027."></a></p>
<figcaption>Horsham-Warminster-Warrington area PFAS exposure timeline</figcaption>
</figure>
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