OHA Drinking Water Services
OR41
PWS ID: 01324 ---- WEST YAMHILL 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
9/28/2023  5 3 years 0 0.075
9/28/2023  10/10/2023 5 3 years 0 0.075
9/20/2020  -  9/21/2020 5 3 years 0 0
9/20/2020  -  9/21/202010/5/2020 5 3 years 0 0
9/27/2017  -  9/28/2017 5 3 years 0 0
9/27/2017  -  9/28/201710/10/2017 5 3 years 0 0
9/5/2014  -  9/7/2014 5 3 years 0 0
9/5/2014  -  9/7/20149/15/2014 5 3 years 0 0
9/15/2011  -  9/19/201110/4/2011 5 3 years 0 0
9/24/2008  -  9/25/200810/23/2008 5 3 years 0 0
7/1/1994  -  8/23/19946/19/1995 5 6 months 0.0030 0.380
1/1/1994  -  2/23/199411/21/1994 5 6 months 0.0100 0.650


More information for this water system: SDWIS ID 4711
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