Table 9.
Comparison of summary statistics for: health risk as measured by hazard indices (HIs) vs. well water quality as measured by the sum of risk quotients (RQs).
| Carcinogenic Risk from Arsenic | Carcinogenic Risk from Uranium | ||
|---|---|---|---|
| Number of wells tested for arsenic, reporting limit of 0.001 mg/L | 164 | Number of wells tested for uranium, reporting limit of 0.001 mg/L | 97 |
| Number of wells with detected arsenic | 44 | Number of wells with detected uranium | 66 |
| Percent of wells with detected arsenic | 26.8 | Percent of wells with detected uranium | 68.8 |
| Number of wells with carcinogenic risk ≥ 4 × 10−5 | 44 | Number of wells with carcinogenic risk ≥ 1.0 × 10−6 | 0 |
| Percent of wells with carcinogenic risk ≥ 4 × 10−5 | 26.8 | Percent of wells with carcinogenic risk ≥ 1.0 × 10−6 | 0.0 |