OHA Drinking Water Services
OR41
PWS ID: 01428 ---- LOWER SILETZ WATER SYSTEM
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
7/3/2023  -  7/11/20237/28/2023 5 3 years 0 0.635
8/5/2019  -  8/6/20198/13/2019 5 3 years 0 0.385
9/15/2014  -  8/23/2016 9 3 years 0 0.241
8/23/2016  9/9/2016 5 3 years 0.0016 0
9/15/2014  -  9/16/201410/1/2014 4 3 years 0 0.257
9/6/2011  9/28/2011 5 3 years 0.0127 0.550
7/23/2008  8/6/2008 5 3 years 0.0152 0.430
9/20/2005  -  9/21/200510/3/2005 5 3 years 0.0032 0.410
1/1/1999  -  6/22/19997/12/1999 10 6 months 0.0110 0.320
7/1/1994  -  11/8/19943/10/1995 10 6 months 0.0100 0.560


More information for this water system: SDWIS ID 4097
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PFAS data are now located on the Chemical Results page.
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