OHA Drinking Water Services
OR41
PWS ID: 01474 ---- WESTLAND WATER ASSOCIATION
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
6/21/2022  7/7/2022 5 3 years 0.0070 0.576
7/23/2019  8/2/2019 5 3 years 0 0.197
7/12/2016  8/1/2016 5 3 years 0.0019 0.613
8/20/2013  -  8/21/20139/3/2013 5 3 years 0.0030 0.740
8/18/2010  9/23/2010 5 3 years 0.0030 0.215
5/9/2007  6/5/2007 5 3 years 0 0.065
5/12/2004  5/24/2004 5 3 years 0.0035 0.325
1/1/2001  -  7/12/20017/23/2001 5 1 year 0.0030 0.360
1/1/2000  -  8/2/20008/22/2000 5 1 year 0.0150 0.200
1/1/1998  -  6/18/19988/11/1998 5 1 year 0.0010 0.120
7/1/1997  -  11/6/199712/3/1997 5 6 months 0.0020 0.180
1/1/1997  -  2/27/19974/24/1997 5 6 months 0.0060 0.930


More information for this water system: SDWIS ID 4275
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