OHA Drinking Water Services
OR41
PWS ID: 00381 ---- WOLSBORN FARMS WATER DISTRICT
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
9/8/2023  10 3 years 0 0.251
9/8/2023  9/15/2023 10 3 years 0.0030 0.251
9/30/2020  10 3 years 0 0.625
9/30/2020  10/6/2020 10 3 years 0.0030 0.625
9/26/2017  10 3 years 0 0.298
9/26/2017  10/9/2017 10 3 years 0 0.298
9/22/2014  -  9/23/2014 12 3 years 0 0.440
9/22/2014  -  9/23/201410/9/2014 12 3 years 0.0040 0.440
9/27/2011  -  9/29/201110/10/2011 11 3 years 0 0.665
8/20/2010  9/23/2010 10 3 years 0.0030 0.580
8/29/2007  -  9/4/200710/10/2007 10 3 years 0.0075 1.790
8/10/2004  -  8/11/20048/20/2004 10 1 year 0.0070 0.950
7/28/2003  8/14/2003 10 1 year 0.0060 1.220
12/22/2002  -  12/27/20021/13/2003 9 1 year 0.0030 1.320
1/1/2001  -  4/13/20015/2/2001 5 1 year 0.0020 1.200
1/1/1998  -  6/16/19987/8/1998 5 1 year 0.0060 1.160
7/1/1997  -  12/28/19971/5/1998 10 6 months 0.0020 0.900
7/1/1993  -  7/15/199312/30/1993 10 6 months 0.0030 1.820


More information for this water system: SDWIS ID 3326
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