OHA Drinking Water Services
OR41
PWS ID: 00517 ---- COBBLESTONE MHP
Lead & Copper

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Summary Results
Detailed Results
Corrosion Control
Service Lines
90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
11/12/2024  11/22/2024 5 6 months 0.0006 0.015
6/13/2024  -  6/17/20246/27/2024 5 6 months 0.0010 0.037
11/29/2023  -  12/4/202312/15/2023 5 6 months 0.0128 0.069
5/29/2023  -  6/5/20236/16/2023 5 6 months 0.0013 0.039
4/5/2022  4/22/2022 5 6 months 0.0069 0.109
9/27/2018  10/3/2018 5 3 years 0.0045 0.046
9/6/2017  9/13/2017 5 1 year 0.0053 0.117
9/29/2016  -  9/30/201610/7/2016 5 1 year 0.0107 0.082
9/8/2015  9/15/2015 5 1 year 0.0026 0.044
7/2/2014  7/10/2014 5 1 year 0.0023 0.031
9/4/2013  9/11/2013 5 1 year 0.0056 0.128
11/8/2011  11/11/2011 5 6 months 0.0070 0.141
1/20/2011  3/8/2011 5 6 months 0.0139 0.256
9/29/2009  10/8/2009 5 3 years 0.0165 0.185
7/1/2003  7/28/2003 5 1 year 0.0006 0.105
1/1/2002  -  4/17/20025/8/2002 5 6 months 0.0070 0.090
7/1/2001  -  7/24/20018/2/2001 5 6 months 0.0093 0.290
1/1/2000  -  6/30/20007/31/2000 5 1 year 0.0358 0.376
1/1/1999  -  6/20/19997/30/1999 5 1 year 0.0090 0.273
1/1/1998  -  6/16/19987/2/1998 5 1 year 0.0080 0.470
1/1/1996  -  7/2/19967/12/1996 5 1 year 0.0080 0.295
1/1/1995  -  3/24/19954/10/1996 5 6 months 0.0080 0.245
7/1/1994  -  11/15/19944/10/1996 5 6 months 0.0180 0.219


More information for this water system: SDWIS ID 3361
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