OHA Drinking Water Services
OR41
PWS ID: 90528 ---- OREGON TRAIL SD - COTTRELL ELEM
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
6/14/2024  5 3 years 0 0.016
6/14/2024  6/19/2024 5 3 years 0.0005 0.016
6/17/2021  5 3 years 0 0.034
6/17/2021  6/22/2021 5 3 years 0.0020 0.034
6/23/2017  5 3 years 0 0.019
6/23/2017  6/12/2018 5 3 years 0.0008 0.019
9/19/2014  5 3 years 0 0.037
9/19/2014  9/29/2014 5 3 years 0.0034 0.037
8/26/2011  9/6/2011 5 3 years 0 0.003
8/10/2005  5 3 years 0 0.028
3/14/2003  4/1/2003 5 1 year 0.0010 0.120
1/1/1999  -  10/14/199910/29/1999 5 1 year 0.0064 0.370
1/1/1995  -  5/9/19955/16/1995 10 6 months 0.0070 0.800
7/1/1994  -  11/14/19941/6/1995 10 6 months 0.0040 0.640


More information for this water system: SDWIS ID 690
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