OHA Drinking Water Services
OR41
PWS ID: 95537 ---- US SILICA
Lead & Copper

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Corrosion Control
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90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
6/5/2023  -  6/6/20236/23/2023 5 3 years 0.0022 0.182 3/12/2024
8/13/2020  11/10/2020 5 1 year 0 0 4/23/2021
9/9/2019  9/30/2019 5 1 year 0.0005 0.096 10/3/2019
6/26/2018  -  6/27/20187/19/2018 5 1 year 0 0.001
7/10/2017  8/14/2017 4 1 year 0.0029 0.094
6/21/2016  7/7/2016 5 6 months 0.0059 0.128
10/28/2015  -  11/10/20151/28/2016 5 6 months 0.0106 0.166


More information for this water system: SDWIS ID 5383
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