OHA Drinking Water Services
OR41
PWS ID: 01514 ---- TWIN CEDARS MHP
Lead & Copper

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Detailed Results
Corrosion Control
Service Lines
90th Percentile Summary Results

Sample Dates Date
Received		 Sample
Count		 Frequency Lead
(mg/L)		 Copper
(mg/L)		 Consumer
Notice Date
9/16/2025  10/9/2025 4 3 years 0.0006 0.220
9/29/2022  -  9/30/202210/5/2022 5 3 years 0 0.185
6/1/2019  -  6/5/20196/19/2019 5 3 years 0.0092 0.117
8/9/2016  8/25/2016 5 3 years 0.0013 0
6/14/2013  -  6/16/20137/10/2013 5 1 year 0.0058 0
7/13/2012  -  8/14/20129/5/2012 5 1 year 0.0095 0.140
6/29/2011  -  7/1/20117/27/2011 10 1 year 0.0047 0
12/7/2010  1/5/2011 10 6 months 0 0
6/14/2010  7/7/2010 10 6 months 0 0
11/7/2009  -  11/9/200912/9/2009 10 6 months 0 0
5/14/2009  -  5/15/20096/3/2009 10 6 months 0 0


More information for this water system: SDWIS ID 5055
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