| Drinking water quality | Assessment grade | Confidence | ||||
|---|---|---|---|---|---|---|
| Very poor | Poor | Good | Very good | In state grade | In trend grade | |
| Drinking water quality measures | Stable | Adequate high-quality evidence and high level of consensus | Adequate high-quality evidence and high level of consensus | |||
Drinking water quality assessment is based on data and assessments provided by Icon Water. Trend increases or decreases refer to changes relative to 2007–2011 conditions.