OHA Drinking Water Services
OR41
PWS ID: 91920 ---- REDWOOD ELEMENTARY SD 7
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
8/23/2023  9/8/2023 5 3 years 0 0.107
7/2/2020  7/9/2020 5 3 years 0 0.102
7/12/2017  8/7/2017 5 3 years 0 0.091
9/3/2014  10/10/2014 5 3 years 0 0.106
8/18/2011  9/2/2011 5 3 years 0.0006 0.140
10/28/2008  12/11/2008 5 3 years 0.0015 0.097
6/19/2002  8/2/2002 10 1 year 0.0020 0.099
1/1/1999  -  10/14/199912/6/1999 5 1 year 0.0015 0.082
1/1/1998  -  11/2/199812/7/1998 5 1 year 0.0024 0.120
7/1/1996  -  10/10/19961/3/1997 10 6 months 0.0064 0.110
1/1/1994  -  5/24/19946/27/1994 10 6 months 0 0.140


More information for this water system: SDWIS ID 1097
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