OHA Drinking Water Services
OR41
PWS ID: 00922 ---- VERNONIA, CITY OF
Surface Water Treatment Rule

MRDL Summary

Abbreviations:  CFE = Combined filter effluent, CT = Contact time, IFE = Individual filter effluent, MCL = Maximum contaminant level, MRDL = Maximum residual disinfection level, N = No (requirement was not met), WTP = Water treatment plant, Y = Yes (requirement was met).

Results not meeting criteria are outlined in red.

Monitoring
Period
Date
Received
Entry
Point
< CFE 95 %
Turbidity
MCL
< CFE Max
Turbidity
MCL
IFE
Triggers
Met
CT's
Required
Met
Chlorine
at Entry
Point
Oct 01, 2024 (pdf) Nov 08, 2024 WTP-AYYYYY
Sep 01, 2024 (pdf) Oct 10, 2024 WTP-AYYYYY
Aug 01, 2024 (pdf) Sep 10, 2024 WTP-AYYYYY
Jul 01, 2024 (pdf) Aug 08, 2024 WTP-AYYYYY
Jun 01, 2024 (pdf) Jul 10, 2024 WTP-AYYYYY
May 01, 2024 (pdf) Jun 10, 2024 WTP-AYYYYY
Apr 01, 2024 (pdf) May 10, 2024 WTP-AYYYYY
Mar 01, 2024 (pdf) Apr 09, 2024 WTP-AYYYYY
Feb 01, 2024 (pdf) Mar 06, 2024 WTP-AYYYYY
Jan 01, 2024 (pdf) Feb 09, 2024 WTP-AYYYYY
Dec 01, 2023 (pdf) Jan 04, 2024 WTP-AYYYYY
Nov 01, 2023 (pdf) Dec 08, 2023 WTP-AYYYYY
Oct 01, 2023 (pdf) Nov 09, 2023 WTP-AYYYYY
Sep 01, 2023 (pdf) Oct 05, 2023 WTP-AYYYYY
Aug 01, 2023 (pdf) Sep 11, 2023
Late
WTP-AYYYYY
Jul 01, 2023 (pdf) Aug 10, 2023 WTP-AYYYYY
Jun 01, 2023 (pdf) Jul 10, 2023 WTP-AYYYYY
May 01, 2023 (pdf) Jun 26, 2023
Late
WTP-AYYY
May 01, 2023 (pdf) Jun 06, 2023 WTP-AYY
Apr 01, 2023 (pdf) May 10, 2023 WTP-AYYYYY
Mar 01, 2023 (pdf) Apr 10, 2023 WTP-AYYYYY
Feb 01, 2023 (pdf) Mar 03, 2023 WTP-AYYYYY
Jan 01, 2023 (pdf) Feb 09, 2023 WTP-AYYYYY
Dec 01, 2022 (pdf) Jan 04, 2023 WTP-AYYYYY
Nov 01, 2022 (pdf) Dec 08, 2022 WTP-AYYYYY
Oct 01, 2022 (pdf) Nov 10, 2022 WTP-AYYYYY
Sep 01, 2022 (pdf) Oct 10, 2022 WTP-AYYYYY
Aug 01, 2022 (pdf) Sep 09, 2022 WTP-AYYYYY
Jul 01, 2022 (pdf) Aug 11, 2022
Late
WTP-AYYYYY
Jun 01, 2022 (pdf) Jul 06, 2022 WTP-AYYYYY
May 01, 2022 (pdf) Jun 07, 2022 WTP-AYYYYY
Apr 01, 2022 (pdf) May 06, 2022 WTP-AYYYYY
Mar 01, 2022 (pdf) Apr 11, 2022
Late
WTP-AYYYYY
Feb 01, 2022 (pdf) Mar 04, 2022 WTP-AYYYYY
Jan 01, 2022 (pdf) Feb 10, 2022 WTP-AYYYYY
Dec 01, 2021 (pdf) Jan 10, 2022 WTP-AYYYYY
Nov 01, 2021 (pdf) Dec 10, 2021 WTP-AYYYYY
Oct 01, 2021 (pdf) Nov 08, 2021 WTP-AYYYYY
Sep 01, 2021 (pdf) Oct 08, 2021 WTP-AYYYYY
Aug 01, 2021 (pdf) Sep 10, 2021 WTP-AYYYYY
Jul 01, 2021 (pdf) Aug 09, 2021 WTP-AYYYYY
Jun 01, 2021 (pdf) Jul 07, 2021 WTP-AYYYYY
May 01, 2021 (pdf) Jun 09, 2021 WTP-AYYYYY
Apr 01, 2021 (pdf) May 06, 2021 WTP-AYYYYY
Mar 01, 2021 (pdf) Apr 05, 2021 WTP-AYYYYY
Feb 01, 2021 (pdf) Mar 08, 2021 WTP-AYYYYY
Jan 01, 2021 (pdf) Feb 08, 2021 WTP-AYYYYY
Dec 01, 2020 Jan 05, 2021 WTP-AYYYYY
Nov 01, 2020 Dec 10, 2020 WTP-AYYYYY
Oct 01, 2020 Nov 06, 2020 WTP-AYYYYY
Sep 01, 2020 Oct 07, 2020 WTP-AYYYYY
Aug 01, 2020 Sep 03, 2020 WTP-AYYYYY
Jul 01, 2020 Aug 13, 2020
Late
WTP-AYYYYY
Jun 01, 2020 Jul 13, 2020
Late
WTP-AYYYYY
May 01, 2020 Jun 04, 2020 WTP-AYYYYY
Apr 01, 2020 May 08, 2020 WTP-AYYYYY
Mar 01, 2020 Apr 06, 2020 WTP-AYYYYY
Feb 01, 2020 Mar 09, 2020 WTP-AYYYYY
Jan 01, 2020 Feb 06, 2020 WTP-AYYYYY
Dec 01, 2019 Jan 06, 2020 WTP-AYYYYY
Nov 01, 2019 Dec 06, 2019 WTP-AYYYYY
Oct 01, 2019 Nov 08, 2019 WTP-AYYYYY
Sep 01, 2019 Oct 09, 2019 WTP-AYYYYY
Aug 01, 2019 Sep 09, 2019 WTP-AYYYYY
Jul 01, 2019 Aug 12, 2019
Late
WTP-AYYYYY
Jun 01, 2019 Jul 05, 2019 WTP-AYYYYY
May 01, 2019 Jun 06, 2019 WTP-AYYYYY
Apr 01, 2019 May 10, 2019 WTP-AYYYYY
Mar 01, 2019 Apr 10, 2019 WTP-AYYYYY
Feb 01, 2019 Mar 06, 2019 WTP-AYYYNY
Jan 01, 2019 Feb 08, 2019 WTP-AYYYYY



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