OHA Drinking Water Services
OR41
PWS ID: 94946 ---- GUIDE DOGS FOR THE BLIND INC
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
5/1/2025  5/6/2025 10 6 months 0.0002 0.025
11/15/2024  11/26/2024 10 6 months 0.0004 0.020
2/26/2024  2/28/2024 10 6 months 0.0004 0.024
8/16/2023  8/23/2023 10 6 months 0.0005 0.024
2/10/2023  -  6/1/20236/12/2023 20 6 months 0.0008 0.025
10/6/2020  10/20/2020 5 3 years 0 0
9/5/2017  9/25/2017 5 3 years 0.0030 0
9/23/2014  10/7/2014 5 3 years 0 0
8/17/2010  9/23/2010 5 3 years 0.0035 0
12/26/2006  2/8/2007 5 3 years 0.0005 0.043
12/16/2002  2/24/2003 5 3 years 0.0030 0.006
1/1/1999  -  8/16/19999/9/1999 5 1 year 0.0070 0.038
7/1/1997  -  9/8/199710/21/1997 5 6 months 0 0
7/1/1996  -  12/8/19961/2/1997 5 6 months 0.0018 0.138


More information for this water system: SDWIS ID 2988
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