OHA Drinking Water Services
OR41
PWS ID: 94200 ---- COE DALLES/JD-THE DALLES DAM
Lead & Copper

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Summary Results
Detailed Results
Service Lines
90th Percentile Summary Results

Sample Dates Date
Received
Sample
Count
Frequency Lead
(mg/L)
Copper
(mg/L)
Consumer
Notice Date
7/3/2023  7/17/2023 7 3 years 0.0032 0.034
6/2/2022  6/27/2022 7 3 years 0.0027 0.041
6/8/2021  7/8/20217/23/2021 7 3 years 0.0013 0.081
6/12/2018  7/13/2018 7 3 years 0.0017 0.077
7/19/2016  8/25/20169/7/2016 10 3 years 0.0028 0.008
7/9/2014  8/7/20149/24/2014 5 3 years 0.0022 0.004
8/9/2011  9/6/2011 5 1 year 0.0041 0.006
8/19/2010  9/8/2010 5 1 year 0.0019 0.012
6/20/2007  7/17/2007 5 1 year 0.0070 0.011
11/15/2005  12/27/2005 5 1 year 0.0040 0.003
7/1/1994  12/29/19941/31/1995 10 6 months 0.0043 0.081
1/1/1994  2/18/19949/8/1994 10 6 months 0.0090 0.114



More information for this water system: SDWIS ID 1640
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Something missing? The new Chemical Results page replaces many pages, including arsenic and nitrate.

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