OHA Drinking Water Services
OR41
PWS ID: 00371 ---- CHARLES TRACTS WATER COMPANY
Lead & Copper

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90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
9/23/2020  10/7/2020 5 3 years 0.0019 0.042
9/15/2016  10/4/2016 5 3 years 0.0069 0.085
9/26/2013  10/29/2013 5 3 years 0.0050 0.087
8/31/2010  11/8/2010 5 3 years 0.0014 0.017
11/27/2007  1/8/2008 5 3 years 0.0020 0.026
7/20/2004  9/23/2004 5 3 years 0.0050 0.068
1/1/2001  -  7/20/20018/23/2001 5 1 year 0.0012 0
1/1/2000  -  12/18/200012/29/2000 5 1 year 0.0010 0.010
1/1/1999  -  12/8/19991/20/2000 5 1 year 0.0050 0.030
1/1/1994  -  6/17/19949/2/1994 10 6 months 0 0.080
7/1/1993  -  12/16/19931/26/1994 10 6 months 0.0020 0.100


More information for this water system: SDWIS ID 3730
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