Untested Private Well Water
High burden — Untested Private Well Water is a significant avoidable exposure.
Private well, never tested.
The breakdown
Each driver rated 0 (none) to 10 (worst)
Evidence strength: moderate · Detox Score = 100 − hazard×4.6 − exposure×3.4 − persistence×2.6, clamped 1–100.
What this means for you
A Detox Score of 36 places untested private well water in the High band. The chemical-hazard rating is what drives the score down. Wells aren't covered by public water rules. Arsenic, nitrates, bacteria and agricultural runoff are all possible and invisible without a test.
Frequently asked questions
Is untested private well water a toxic exposure?
Untested Private Well Water has a Detox Score of 36 out of 100 (High burden), which means it is a significant avoidable exposure. Wells aren't covered by public water rules. Arsenic, nitrates, bacteria and agricultural runoff are all possible and invisible without a test.
What is a safer alternative to untested private well water?
A lower-exposure swap for untested private well water is: Annual testing + a targeted filter. Wells aren't covered by public water rules. Arsenic, nitrates, bacteria and agricultural runoff are all possible and invisible without a test.