What Well Owners Should Test For Every Year

If your water comes from a private well, no one is testing it for you. Municipal water systems are monitored and regulated on a regular schedule; private wells, however, are the owner's responsibility entirely. It's easy to go years without a single test if nothing seems obviously wrong.

The problem is that many well water contaminants have no taste, smell, or visible sign. Here's what's worth checking annually.

Bacteria: total coliform & E. coli

This is the single most important annual test. Bacteria can enter a well through surface runoff, flooding, or a compromised well cap or casing.Because levels can change from one season to the next, a clean result last year doesn't guarantee one this year.

Heavy metals

Lead, arsenic and copper can leach into well water from natural rock formations or from older plumbing and fixtures. These metals build up in the body over time, which is exactly why routine testing matters more than a one-time check.

Chemical & VOC contamination

Wells near agricultural land, septic systems, or old fuel storage can be exposed to pesticides, fertilizers, or petroleum-related compounds. A chemical and VOC panel screens for the contamination sources most relevant to your property's location and history.

pH, hardness & mineral content

These don't usually pose a health risk, but they affect everything from plumbing lifespan to how effective your water softener or filtration system actually is. Tracking them yearly helps you catch problems with well equipment early.

A simple annual habit

Testing once a year and after any major event like flooding, nearby construction, or a new odor or taste, is the standard recommendation for private well owners. It's a small, routine step that protects the people drinking that water every day.

If it's been a while since your well was tested, or you've never had it tested at all, now is a good time to start.