OHA Drinking Water Services
OR41
PWS ID: 05094 ---- THE MARYLHURST 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
6/15/2024  5 3 years 0 0.436
6/15/2024  7/10/2024 5 3 years 0.0022 0.436
9/23/2021  9/30/2021 5 3 years 0.0080 0.309
9/15/2015  9/25/2015 5 3 years 0.0020 0.028
9/12/2011  9/23/2011 5 3 years 0 0.187
2/2/2009  3/10/2009 5 3 years 0.0010 0.375
8/23/2007  9/24/2007 5 3 years 0.0180 0.515
1/1/1998  -  2/18/19983/4/1998 5 6 months 0.0019 0.100
1/1/1994  -  1/21/19941/31/1994 5 6 months 0.0040 0.175


More information for this water system: SDWIS ID 157
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