OHA Drinking Water Services
OR41
PWS ID: 00350 ---- HIGHLAND HEIGHTS ESTATES
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
9/16/2025  10/9/2025 5 3 years 0 0.464
8/17/2022  -  8/18/2022 5 3 years 0 0.323
8/17/2022  -  8/18/20228/31/2022 5 3 years 0 0.323
8/14/2018  5 3 years 0 0.136
8/14/2018  8/23/2018 5 3 years 0 0.136
9/9/2014  10/10/2014 5 3 years 0 0.665
9/10/2010  10/4/2010 5 3 years 0.0050 0.405
7/1/1996  -  9/26/199610/23/1996 5 6 months 0.0057 0.300
7/1/1993  -  12/20/19932/11/1994 5 6 months 0.0030 0.340


More information for this water system: SDWIS ID 3318
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