How Often Should I Test My Well Water?

Short answer:

Test a private well at least once a year for bacteria and nitrates. Test more often (or immediately) after a well repair, flooding on the property, a change in taste, odor, color, or clarity, or when someone in the home is pregnant, immunocompromised, or under 12 months old. A baseline test also matters at purchase of any home on well water.

The annual baseline panel

Total coliform bacteria and E. coli. The single most important safety test.
Nitrates and nitrites. Especially important with infants in the home.
pH and hardness. Affects both plumbing life and treatment decisions.
Iron and manganese. Common in Northeast Florida shallow wells, causes staining.
Sulfate and hydrogen sulfide. Cause the rotten-egg smell some homeowners get on well water.
Total dissolved solids (TDS). Overall mineral load.

When to test outside the annual schedule

Anytime the water changes in taste, smell, color, or clarity.
After a pump replacement, well repair, or well casing work.
After flooding or heavy sustained rain that could contaminate the wellhead.
Before a real-estate transaction on any home with a private well.
When a new person moves in who is pregnant, immunocompromised, or under 12 months.

What the mechanical side can and cannot fix

WaterCare's role sits on the mechanical and structural side of the well. We inspect the casing, well cap seal, and pump for anything that could allow contamination into the well. If a test result points to a casing integrity issue, we can address it directly. For water treatment (softening, iron removal, chlorination systems), we coordinate with treatment specialists so the mechanical and treatment sides work together. See our residential well and pump page for what we handle directly.

Frequently asked questions

What should a basic well water test cover? +

A baseline residential well water test should cover total coliform and E. coli bacteria, nitrates and nitrites, pH, hardness, iron, and total dissolved solids. In Northeast Florida, testing sulfate and hydrogen sulfide is also worthwhile because the surficial aquifer can carry both.

Can I use a home test kit or should I use a lab? +

Home test strips are useful for quick pH, hardness, and iron checks. For anything that involves health (bacteria, nitrates), a certified lab is the right path because the sample handling and precision matter. Your county health department can provide a list of certified labs.

Does WaterCare do water testing? +

WaterCare focuses on the mechanical side (drilling, pumps, pressure systems, irrigation) and works alongside certified water-testing labs and treatment specialists when a customer needs a health-related analysis. We can point you to the right lab and interpret the mechanical implications of the results.

What if my test shows bacteria? +

A positive bacteria result usually indicates surface contamination reaching the well casing or an issue with the well cap seal. The typical response is shock chlorination followed by retesting. If bacteria return after chlorination, it points to a casing or cap integrity problem that needs mechanical inspection.

Water Quality Concern After a Repair?

We inspect the casing and cap seal so treatment work has a sound foundation.

Schedule a Well Inspection