Elevated blood pressure and high sodium levels in the public drinking water. Preliminary results of a study of high school students.

High school sophomores residing in a community with elevated levels of sodium in the drinking water (107 mg/1) exhibited a marked upward shift in blood pressure distribution patterns for systolic and diastolic blood pressures in both males and females as compared with a similar group in the control community (8 mg/1). The students group from the high sodium community appears to exhibit a blood pressure distribution characteristic of persons several years older.