A federal magistrate judge has barred mention of symptoms from drinking tainted water as well as prior settlements between Susquehanna County residents and an oil and gas driller in a long-running “legal saga” over ­groundwater contamination.

U.S. District Chief Magistrate Judge Martin C. Carlson of the Middle District of Pennsylvania’s decision on injury and settlement evidence came as part of a broader ruling hashing out which of the 28 types of evidence proffered by the plaintiffs and defendants in Ely v. Cabot Oil & Gas could be used during the upcoming trial.