Ayers and others (plaintiffs) brought a toxic-tort suit against the Township of Jackson (Jackson) (defendant). The plaintiffs were residents of Jackson and claimed that their well water was contaminated by a landfill operated by Jackson. The plaintiffs sought to recover for an enhanced risk of future illness caused by their exposure to the contamination. The plaintiffs did not quantify this risk at trial. At trial, the jury found that Jackson’s conduct was the proximate cause of the contamination of the plaintiffs’ wells. The appellate court dismissed the plaintiffs’ claim for recovery for an enhanced risk of future illness. The plaintiffs appealed.