Water Testing (image) American Society of Agronomy Share Print E-Mail Caption Private water wells are a vital source of drinking water in Pennsylvania. They provide water to nearly one million rural homes and farms. Credit Chad Voorhees Usage Restrictions Use with story only. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.