OHA Drinking Water Services
OR41
PWS ID: 94063 ---- WEST LINN/WILSONVILLE
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
6/26/2022  7/5/2022 5 3 years 0.0019 0.117
6/13/2019  6/26/2019 5 1 year 0.0020 0.052
6/23/2017  7/6/2017 5 1 year 0.0010 0.059
6/23/2016  7/18/2016 5 1 year 0.0018 0.085
6/9/2015  7/13/2015 5 6 months 0.0022 0.037
9/24/2014  10/10/2014 5 6 months 0.0372 0.356
5/17/2013  6/13/2013 5 6 months 0.0019 0.066
9/17/2010  -  9/24/2010 5 3 years 0.0400 0.160
1/19/2006  -  2/15/20065/11/2006 5 3 years 0.0090 0.200
7/1/2000  -  10/12/200011/21/2000 5 6 months 0.0040 0.048
7/1/1994  -  11/14/199411/25/1994 5 6 months 0.0285 0.235


More information for this water system: SDWIS ID 1557
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