OHA Drinking Water Services
OR41
PWS ID: 00869 ---- THE DALLES, 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
Feb 01, 2024 (pdf) Mar 06, 2024 WTP-AYYYYY
Jan 01, 2024 (pdf) Feb 09, 2024 WTP-AYYYYY
Dec 01, 2023 (pdf) Jan 05, 2024 WTP-AYYYYY
Nov 01, 2023 (pdf) Dec 07, 2023 WTP-AYYYYY
Oct 01, 2023 (pdf)
Oct 01, 2023 Amended (pdf)
Nov 07, 2023 WTP-AYYYYY
Sep 01, 2023 (pdf) Oct 09, 2023 WTP-AYYYYY
Aug 01, 2023 (pdf) Sep 07, 2023 WTP-AYYYYY
Jul 01, 2023 (pdf) Aug 11, 2023
Late
WTP-AYYYYY
Jun 01, 2023 (pdf) Jul 10, 2023 WTP-AYYYYY
May 01, 2023 (pdf) Jun 08, 2023 WTP-AYYYYY
Apr 01, 2023 (pdf) May 09, 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 08, 2023 WTP-AYYYYY
Dec 01, 2022 (pdf) Jan 06, 2023 WTP-AYYYYY
Nov 01, 2022 (pdf) Dec 06, 2022 WTP-AYYYYY
Oct 01, 2022 (pdf) Nov 04, 2022 WTP-AYYYYY
Sep 01, 2022 (pdf) Oct 10, 2022 WTP-AYYYYY
Aug 01, 2022 (pdf) Sep 06, 2022 WTP-AYYYYY
Jul 01, 2022 (pdf) Aug 04, 2022 WTP-AYYYYY
Jun 01, 2022 (pdf) Jul 01, 2022 WTP-AYYYYY
May 01, 2022 (pdf) Jun 08, 2022 WTP-AYYYYY
Apr 01, 2022 (pdf) May 04, 2022 WTP-AYYYYY
Mar 01, 2022 (pdf) Apr 08, 2022 WTP-AYYYYY
Feb 01, 2022 (pdf) Mar 03, 2022 WTP-AYYYYY
Jan 01, 2022 (pdf) Feb 08, 2022 WTP-AYYYYY
Dec 01, 2021 (pdf) Jan 04, 2022 WTP-AYYYYY
Nov 01, 2021 (pdf) Dec 02, 2021 WTP-AYYYYY
Oct 01, 2021 (pdf) Nov 08, 2021 WTP-AYYYYY
Sep 01, 2021 (pdf) Oct 04, 2021 WTP-AYYYYY
Aug 01, 2021 (pdf) Sep 09, 2021 WTP-AYYYYY
Jul 01, 2021 (pdf) Aug 04, 2021 WTP-AYYYYY
Jun 01, 2021 (pdf) Jul 09, 2021 WTP-AYYYYY
May 01, 2021 (pdf) Jun 07, 2021 WTP-AYYYYY
Apr 01, 2021 (pdf) May 05, 2021 WTP-AYYYYY
Mar 01, 2021 (pdf) Apr 06, 2021 WTP-AYYYYY
Feb 01, 2021 (pdf) Mar 03, 2021 WTP-AYYYYY
Jan 01, 2021 (pdf) Feb 04, 2021 WTP-AYYYYY
Dec 01, 2020 Jan 06, 2021 WTP-AYYYYY
Nov 01, 2020 Dec 09, 2020 WTP-AYYYYY
Oct 01, 2020 Nov 02, 2020 WTP-AYYYYY
Sep 01, 2020 Oct 02, 2020 WTP-AYYYYY
Aug 01, 2020 Sep 04, 2020 WTP-AYYYYY
Jul 01, 2020 Aug 04, 2020 WTP-AYYYYY
Jun 01, 2020 Jul 10, 2020 WTP-AYYYYY
May 01, 2020 Jun 04, 2020 WTP-AYYYYY
Apr 01, 2020 May 04, 2020 WTP-AYYYYY
Mar 01, 2020 Apr 06, 2020 WTP-AYYYYY
Feb 01, 2020 Mar 03, 2020 WTP-AYYYYY
Jan 01, 2020 Feb 07, 2020 WTP-AYYYYY
Dec 01, 2019 Jan 09, 2020 WTP-AYYYYY
Nov 01, 2019 Dec 09, 2019 WTP-AYYYYY
Oct 01, 2019 Nov 06, 2019 WTP-AYYYYY
Sep 01, 2019 Oct 04, 2019 WTP-AYYYYY
Aug 01, 2019 Sep 06, 2019 WTP-AYYYYY
Jul 01, 2019 Aug 06, 2019 WTP-AYYYYY
Jun 01, 2019 Jul 02, 2019 WTP-AYYYYY
May 01, 2019 Jun 04, 2019 WTP-AYYYYY
Apr 01, 2019 May 06, 2019 WTP-AYYYYY
Mar 01, 2019 Apr 03, 2019 WTP-AYYYYY
Feb 01, 2019 Mar 01, 2019 WTP-AYYYYY
Jan 01, 2019 Feb 08, 2019 WTP-AYYYYY



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