OHA Drinking Water Services
OR41
PWS ID: 90889 ---- ANNEX CHARTER SCHOOL
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
8/31/2022  9/16/2022 5 3 years 0.0016 0.059
9/18/2019  10/9/2019 5 3 years 0.0032 0.096
6/22/2016  7/25/2016 5 3 years 0.0049 0.310
9/18/2013  10/7/2013 5 3 years 0.0018 0.029
7/26/2010  10/4/2010 5 3 years 0.0092 0.474
5/30/2007  8/17/2007 5 3 years 0.0015 1.034
5/2/2003  3/13/2003 5 3 years 0.0020 0.492
1/1/2001  -  3/29/200111/19/2001 5 1 year 0.0040 0.118
1/1/2000  -  5/23/20006/26/2000 5 1 year 0.0160 0.150
1/1/1999  -  3/3/199910/7/1999 5 1 year 0.0133 0.130
1/1/1998  -  12/2/19981/8/1999 5 1 year 0.0405 0.210
1/1/1996  -  9/30/199710/14/1997 5 1 year 0.0023 0.410
1/1/1996  -  12/18/19961/9/1997 5 1 year 0.0350 0.060
1/1/1995  -  9/27/19957/17/1996 5 1 year 0 0.040
1/1/1994  -  11/22/19947/3/1995 5 6 months 0.0570 0.095
1/1/1994  -  6/30/19948/19/1994 5 6 months 0.0300 0.120
7/1/1993  -  12/21/19931/6/1994 5 6 months 0.0109 0.020


More information for this water system: SDWIS ID 2560
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