OHA Drinking Water Services
OR41
PWS ID: 91810 ---- FERN RIDGE MIDDLE SCHOOL
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
6/12/2025  6/17/2025 5 3 years 0 0.072
9/20/2022  5 3 years 0 0
9/20/2022  9/28/2022 5 3 years 0 0
9/12/2018  5 3 years 0 0
9/12/2018  9/18/2018 5 3 years 0 0
9/20/2015  5 3 years 0 0
9/20/2015  9/30/2015 5 3 years 0.0022 0
6/21/2012  6/29/2012 10 3 years 0.0080 0.052
7/21/2011  5 3 years 0 0.019
9/15/2010  10/1/2010 5 3 years 0 0.048
9/28/2007  10/9/2007 10 3 years 0 0.640
6/10/2003  -  7/1/20036/24/2003 20 6 months 0 0.180
1/14/2003  1/27/2003 20 6 months 0 0.170
6/10/2002  -  7/1/20027/15/2002 20 6 months 0.0090 1.500
1/1/2002  -  3/18/20024/1/2002 10 6 months 0.0090 1.400
1/1/2001  -  4/17/20015/14/2001 20 6 months 0.0170 1.000
1/1/2000  -  5/9/20006/6/2000 20 6 months 0.0180 2.800
7/1/1999  -  10/26/199911/15/1999 20 6 months 0.0140 3.000
7/1/1993  -  11/9/19931/21/1994 20 6 months 0.1100 1.680


More information for this water system: SDWIS ID 1033
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