OHA Drinking Water Services
OR41
PWS ID: 00912 ---- TYGH VALLEY WATER DISTRICT
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
9/9/2022  -  9/11/20229/27/2022 5 3 years 0.0013 0.018
9/9/2018  9/20/2018 5 3 years 0.0012 0.100
9/29/2014  -  9/30/201410/7/2014 5 3 years 0.0012 0.081
8/25/2010  9/8/2010 5 3 years 0.0020 0.075
12/5/2005  12/27/2005 5 3 years 0.0021 0.079
1/1/1999  -  4/3/20014/17/2001 5 3 years 0.0010 0.035
1/1/1998  -  9/28/199810/7/1998 5 1 year 0.0011 0.076
1/1/1997  -  7/27/19978/27/1997 5 1 year 0.0012 0.140
1/1/1996  -  7/14/19968/9/1996 5 1 year 0.0018 0.103
1/1/1995  -  5/23/19956/15/1995 10 6 months 0 0.220
7/1/1994  -  11/22/19943/8/1995 10 6 months 0.0020 0.250


More information for this water system: SDWIS ID 3469
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