OHA Drinking Water Services
OR41
PWS ID: 00932 ---- WARRENTON, CITY OF
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
7/12/2024  -  9/3/20249/20/2024 20 3 years 0.0012 0.248
9/10/2021  -  9/13/20219/24/2021 20 3 years 0.0110 0.378 10/15/2021
8/8/2018  -  8/15/20189/17/2018 22 3 years 0.0080 0.348 10/3/2018
9/22/2015  -  9/23/201510/6/2015 20 3 years 0.0100 0.450
6/12/2012  -  9/19/201210/1/2012 40 3 years 0.0030 0.372
9/29/2009  -  9/30/200910/29/2009 20 3 years 0.0070 0.400
6/28/2006  7/20/2006 20 3 years 0.0070 0.380
9/23/2003  -  9/25/200310/20/2003 20 6 months 0.0020 0.220
3/14/2003  -  3/18/20034/11/2003 20 6 months 0.0050 0.200
1/1/1999  -  8/16/20011/31/2002 20 3 years 0.0090 0.820
1/1/1998  -  6/23/19989/16/1998 20 1 year 0.0050 0.530
1/1/1995  -  9/7/19959/16/1998 20 1 year 0.0050 0.510
1/1/1994  -  7/14/19949/13/1994 20 1 year 0.0100 0.630
1/1/1993  -  5/11/19936/11/1993 40 6 months 0.0100 0.490
7/1/1992  -  11/24/199212/24/1992 40 6 months 0.0140 0.997


More information for this water system: SDWIS ID 3918
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