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OR41
PWS ID: 06204 ---- KNIFE RIVER MATERIALS - CENTRAL OREGON
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
8/17/2022  9/8/2022 5 1 year 0.0070 0.438
6/16/2021  6/23/2021 5 1 year 0.0110 0.134
6/3/2020  7/7/2020 5 1 year 0.0120 0.138
6/19/2019  7/5/2019 5 6 months 0.0070 0.157
11/12/2018  11/21/2018 5 6 months 0.0080 0.164


More information for this water system: SDWIS ID 5247
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