Description: Watermains are shown as positionally accurate as possible to their geographic locations. Since the watermain is not visible, these locations are usually determined by features on the pipes - such as valves. For newer watermains, measurements may be obtained during construction.Diameter, install date, and material type are three key attributes maintained for this feature.If the user is working directly with the source data, they are cautioned to exclude all features wihere 'End_Date' is null. Abandoned watermains are included in data. For Cityworks and Map-it users abandoned pipes are not shown.Generally, the Material2 field lists the approriate AWWA specification as follows:C900 - PVC pipe that is <= 300mm in diameterC901 - Polyethylene pipe that is <= 75mm in diameterC903 - Polyethylene-Aluminum pipe (ie. Kitec)C904 - Cross-Linked Polyethylene Pipe (PEX)C905 - PVC pipe that is >= 350mm in diameterC906 - Polyethylene pipe that is >= 100mm in diameterC909 - PVCO pipe (molecularly oriented PVC pipe)PVC-160 - PVC pipe pressure class 160PVC-200 - PVC pipe pressure class 200
Description: Several attributes are recorded for each failure to assist with future analysis.Locations are based on field ties or a municipal address. However, since the analysis is typically based on an entire pipe, this is considered positionally accurate.
Description: Control valve locations are geographically accurate. Data is still being gathered for these features, so attributes should be ignored at this time (Dec 2013)