OHA Drinking Water Services
OR41
PWS ID: 00057 ---- OLNEY-WALLUSKI WATER ASSN
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
9/27/2023  10/9/2023 5 3 years 0.0010 0.282
9/16/2020  9/25/2020 5 3 years 0 0.309
9/13/2017  9/27/2017 5 3 years 0 0.263
9/17/2014  9/30/2014 5 3 years 0.0030 0.385
9/14/2011  9/28/2011 5 3 years 0 0.470
9/22/2008  12/4/2008 5 3 years 0.0010 0.435
9/8/2005  -  9/13/200510/21/2005 5 3 years 0 0.490
9/18/2002  10/30/2002 5 1 year 0.0015 0.530
1/1/1999  -  9/2/199910/22/1999 5 1 year 0.0020 0.360
1/1/1995  -  5/18/19957/6/1995 10 6 months 0.0030 1.080
7/1/1993  -  8/12/19938/30/1994 10 6 months 0.0040 1.317


More information for this water system: SDWIS ID 4380
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