OHA Drinking Water Services
OR41
PWS ID: 00913 ---- UKIAH, 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
7/22/2025  8/6/2025 5 3 years 0 0 11/25/2025
7/13/2022  8/9/2022 5 3 years 0 0 4/3/2023
8/1/2019  8/22/2019 5 3 years 0 0 9/1/2020
9/22/2016  10/7/2016 5 3 years 0.0040 0 10/20/2016
9/25/2013  11/6/2013 5 3 years 0 0
8/25/2010  11/8/2010 5 3 years 0 0.001
9/28/2006  10/16/2006 5 3 years 0 0
7/27/2004  8/26/2004 5 1 year 0.0020 0.014
1/1/1997  -  7/22/199711/20/1997 5 1 year 0.0007 0.008
7/1/1995  -  7/31/19953/19/1996 10 6 months 0 0
7/1/1993  -  8/30/19933/3/1995 10 6 months 0.0020 0


More information for this water system: SDWIS ID 3799
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PFAS data are now located on the Chemical Results page.
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