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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: J Water Health. 2012 Dec;10(4):565–578. doi: 10.2166/wh.2012.102

Figure 2.

Figure 2

Detection Frequencies of E. coli in monthly monitored private (P), unsealed monitoring (M), and sealed monitoring (MS) wells from April 2008 through November 2009. For the Well Type plots (a–c) the number of wells with at least five months of monthly data in each season were 33, 6 and 11 for P, M and MS respectively. There were a total of 12 possible wet season sampling events and 6 dry season months. In the Platform Presence plots (d–f), only private wells are presented here since no monitoring wells had cement platforms. A reduced number of private wells (n=30) was available due to missing information.