OHA Drinking Water Services
OR41
PWS ID: 00460 ---- LAKE GROVE WATER DISTRICT
Lead & Copper

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Detailed Results
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90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
7/9/2025  -  7/15/20257/31/2025 10 1 year 0.0042 0.060
8/5/2024  -  8/14/20249/12/2024 10 1 year 0.0034 0.035
7/31/2023  -  8/4/20238/31/2023 20 1 year 0.0030 0 8/31/2023
8/17/2022  -  8/19/20223/3/2023 20 1 year 0.0060 0.097 9/14/2022
8/12/2021  -  8/16/20219/14/2021 11 1 year 0.0100 0.131 9/14/2021
8/19/2020  -  8/24/20209/17/2020 19 1 year 0.0100 0.083 9/16/2020
8/29/2019  -  9/4/20199/30/2019 20 6 months 0.0070 0.082 9/30/2019
4/3/2019  -  5/18/20197/10/2019 21 6 months 0.0040 0.084 5/16/2019
3/20/2018  -  3/28/20185/7/2018 20 6 months 0.0080 0.064 5/7/2018
9/6/2017  -  9/21/20172/12/2018 22 6 months 0.0100 0.061 10/9/2017
4/11/2017  -  4/17/20175/17/2017 22 6 months 0.0073 0.063
10/15/2016  -  10/26/201611/18/2016 112 6 months 0.0174 0.310
3/15/2016  -  4/27/20166/10/2016 114 6 months 0.0130 0.288
10/26/2015  -  11/12/20151/8/2016 114 6 months 0.0141 0.336
4/28/2015  -  5/12/20157/10/2015 112 6 months 0.0141 0.326
9/30/2014  -  10/15/201412/10/2014 114 6 months 0.0142 0.335
1/7/2014  -  5/27/20147/10/2014 111 6 months 0.0128 0.293
11/9/2013  -  11/18/20131/10/2014 108 6 months 0.0159 0.500
5/8/2013  -  5/21/20137/10/2013 111 6 months 0.0100 0.270
10/10/2012  -  10/23/20121/9/2013 112 6 months 0.0120 0.340
5/9/2012  -  5/23/20127/10/2012 112 6 months 0.0110 0.270
10/11/2011  -  10/24/201112/8/2011 111 6 months 0.0120 0.290
4/27/2011  -  5/17/20117/7/2011 114 6 months 0.0090 0.270
10/14/2010  -  10/22/20101/7/2011 112 6 months 0.0120 0.340
4/2/2010  -  5/10/20107/8/2010 110 6 months 0.0100 0.330
10/14/2009  -  10/26/20091/8/2010 115 6 months 0.0090 0.370
5/8/2009  -  5/21/20097/9/2009 113 6 months 0.0100 0.270
7/1/2008  -  12/31/20081/9/2008 116 6 months 0.0100 0.330
11/17/2007  -  12/7/20071/10/2008 111 6 months 0.0110 0.280
5/17/2007  -  6/1/20077/10/2007 116 6 months 0.0130 0.280
10/19/2006  -  11/2/20061/10/2007 116 6 months 0.0170 0.500
5/22/2006  -  5/26/20067/10/2006 117 6 months 0.0090 0.310
10/15/2005  -  10/31/200512/9/2005 115 6 months 0.0120 0.350
5/18/2005  -  6/1/20057/8/2005 119 6 months 0.0150 0.390
10/19/2004  -  11/22/200412/30/2004 111 6 months 0.0150 0.042
5/2/2004  -  6/25/20047/9/2004 123 6 months 0.0080 0.360
10/21/2003  -  11/4/200312/10/2003 110 6 months 0.0080 0.330
5/10/2003  -  6/30/20037/11/2003 113 6 months 0.0104 0.345
10/23/2002  -  11/3/20021/10/2003 147 6 months 0.0170 0.500
5/6/2002  -  5/21/20027/10/2002 133 6 months 0.0130 0.420
11/9/2001  -  11/22/20011/8/2002 134 6 months 0.0200 0.810
5/10/2001  -  5/22/20017/9/2001 144 6 months 0.0170 0.620
9/14/2000  -  9/22/20001/10/2001 124 6 months 0.0220 0.710
4/7/2000  -  5/22/20007/10/2000 125 6 months 0.0150 0.660
10/19/1999  -  11/1/19991/13/2000 126 6 months 0.0120 0.600
5/12/1999  -  6/6/19997/8/1999 126 6 months 0.0210 0.640
11/5/1998  -  11/17/19981/13/1999 127 6 months 0.0190 0.660
5/7/1998  -  5/29/19987/9/1999 129 6 months 0.0150 0.670
11/9/1997  -  11/21/19971/9/1998 129 6 months 0.0130 0.680
5/24/1997  -  6/5/19977/16/1997 130 6 months 0.0120 0.650
7/1/1993  -  12/14/19932/22/1994 20 6 months 0.0620 1.070


More information for this water system: SDWIS ID 4126
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