OHA Drinking Water Services
OR41
PWS ID: 00087 ---- TOLLGATE WATER COMPANY
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
8/1/2024  -  8/14/2024 10 3 years 0 0.086
8/1/2024  -  8/14/20248/21/2024 10 3 years 0 0.086
7/30/2021  10 3 years 0 0.102
7/30/2021  8/12/2021 10 3 years 0 0.102 8/27/2021
6/26/2018  10 3 years 0 0.143
6/26/2018  7/6/2018 10 3 years 0 0.143
8/13/2015  10 3 years 0 0.145
8/13/2015  2/19/2016 10 3 years 0.0020 0.145
7/23/2012  10 3 years 0 0.154
7/23/2012  8/23/2012 10 3 years 0.0030 0.154
8/25/2009  9/22/2009 10 3 years 0 0
7/11/2006  8/10/2006 10 3 years 0.0020 0.088
5/27/2003  6/6/2003 10 3 years 0.0029 0.189
1/1/1999  -  6/12/20006/28/2000 10 3 years 0.0020 0.190
1/1/1997  -  6/17/19977/11/1997 10 1 year 0.0024 0.220
1/1/1996  -  9/24/199610/21/1996 10 1 year 0.0028 0.210
1/1/1995  -  9/19/199510/12/1995 10 1 year 0 0.180
1/1/1994  -  3/31/19945/2/1994 20 6 months 0 0.207
7/1/1993  -  9/20/199310/9/1993 20 6 months 0.0028 0.138


More information for this water system: SDWIS ID 3690
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