# Guidelines for Testing Well Water

CDC guidance on what to test and when to test sooner.

CDC provides a browser guide to baseline well water tests and events that call for extra testing. It explains indicators such as total coliforms, pH and total dissolved solids. It also describes how to find a certified laboratory and seek help with results. Follow local health advice for a specific well.

Price: Public web resource; contractor services and laboratory tests are separate.. Site: https://cdc.gov/drinking-water/safety/guidelines-for-testing-well-water.html.

Also on the [web page](https://welldrillers.fyi/apps/cdc-well-testing).