OHA Drinking Water Services
OR41
PWS ID: 93921 ---- TRI-COUNTY INDUSTRIAL PARK #1
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
8/30/2023  9/15/2023 5 3 years 0.0010 0.279
8/21/2018  -  8/22/20189/27/2018 5 3 years 0 0.263
9/11/2015  9/21/2015 5 3 years 0 0.780
9/13/2012  10/3/2012 5 3 years 0 0.506
10/9/2003  10/27/2003 5 3 years 0 0
1/1/2000  -  8/9/20008/31/2000 5 1 year 0.0040 0.810
1/1/1999  -  10/14/199911/2/1999 5 1 year 0.0030 0.070
1/1/1998  -  6/29/199810/8/1999 5 1 year 0.0020 0.040
7/1/1997  -  12/5/199710/8/1999 5 6 months 0 0.030
7/1/1993  -  9/28/199310/8/1999 5 6 months 0.0100 0.820


More information for this water system: SDWIS ID 1483
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