Is the historic information important, or just the most recent data?
A. It’s important to understand that water quality can vary simply because local conditions may change. In fact, the results of a single measurement of a water body’s properties are actually less important than looking at how the properties vary over time. Some CRWN sites only contain historic data while others are active and reporting currently. Some of the data may reflect different detection levels or methods of sampling procedures that have changed over the years.
