OHA Drinking Water Services
OR41
PWS ID: 00236 ---- COTTAGE GROVE, 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
CT's
Required
Met
Chlorine
at Entry
Point
Membrane
Parameters
Met
Feb 01, 2026 (pdf) Mar 03, 2026 WTP-BYYYYY
Jan 01, 2026 (pdf) Feb 03, 2026 WTP-BYYYYY
Dec 01, 2025 (pdf) Jan 05, 2026 WTP-BYYYYY
Nov 01, 2025 (pdf) Dec 02, 2025 WTP-BYYYYY
Oct 01, 2025 (pdf) Nov 03, 2025 WTP-BYYYYY
Sep 01, 2025 (pdf) Oct 02, 2025 WTP-BYYYYY
Aug 01, 2025 (pdf) Sep 04, 2025 WTP-BYYYYY
Jul 01, 2025 (pdf) Aug 04, 2025 WTP-BYYYYY
Jun 01, 2025 (pdf) Jul 02, 2025 WTP-BYYYYY
May 01, 2025 (pdf) Jun 04, 2025 WTP-BYYYYY
Apr 01, 2025 (pdf) May 06, 2025 WTP-BYYYYY
Mar 01, 2025 (pdf) Apr 02, 2025 WTP-BYYYYY
Feb 01, 2025 (pdf) Mar 04, 2025 WTP-BYYYYY
Jan 01, 2025 (pdf) Feb 03, 2025 WTP-BYYYYY
Dec 01, 2024 (pdf) Jan 06, 2025 WTP-BYYYYY
Nov 01, 2024 (pdf) Dec 04, 2024 WTP-BYYYYY
Oct 01, 2024 (pdf) Nov 05, 2024 WTP-BYYYYY
Sep 01, 2024 (pdf) Oct 03, 2024 WTP-BYYYYY
Aug 01, 2024 (pdf) Sep 04, 2024 WTP-BYYYYY
Jul 01, 2024 (pdf) Aug 01, 2024 WTP-BYYYYY
Jun 01, 2024 (pdf) Jul 02, 2024 WTP-BYYYYY
May 01, 2024 (pdf) Jun 03, 2024 WTP-BYYYYY
Apr 01, 2024 (pdf) May 02, 2024 WTP-BYYYYY
Mar 01, 2024 (pdf)
Mar 01, 2024 Amended (pdf)
Apr 01, 2024 WTP-BYYYYY
Feb 01, 2024 (pdf) Mar 06, 2024 WTP-BYYYYY
Jan 01, 2024 (pdf) Feb 01, 2024 WTP-BYYYY
Dec 01, 2023 (pdf) Jan 04, 2024 WTP-BYYYY
Nov 01, 2023 (pdf) Dec 05, 2023 WTP-BYYYY
Oct 01, 2023 (pdf) Nov 02, 2023 WTP-BYYYY
Sep 01, 2023 (pdf) Oct 06, 2023 WTP-BYYYY
Aug 01, 2023 (pdf) Sep 05, 2023 WTP-BYYYY
Jul 01, 2023 (pdf) Aug 02, 2023 WTP-BYYYY
Jun 01, 2023 (pdf) Jul 03, 2023 WTP-BYYYY
May 01, 2023 (pdf) Jun 05, 2023 WTP-BYYYY
Apr 01, 2023 (pdf) May 01, 2023 WTP-BYYYY
Mar 01, 2023 (pdf) Apr 03, 2023 WTP-BYYYY
Feb 01, 2023 (pdf) Mar 03, 2023 WTP-BYYYY
Jan 01, 2023 (pdf) Feb 01, 2023 WTP-BYYYY
Dec 01, 2022 (pdf) Jan 03, 2023 WTP-BYYYY
Nov 01, 2022 (pdf) Dec 01, 2022 WTP-BYYYY
Oct 01, 2022 (pdf) Nov 01, 2022 WTP-BYYYY
Sep 01, 2022 (pdf) Oct 03, 2022 WTP-BYYYY
Aug 01, 2022 (pdf) Sep 01, 2022 WTP-BYYYY
Jul 01, 2022 (pdf) Aug 02, 2022 WTP-BYYYY
Jun 01, 2022 (pdf) Jul 01, 2022 WTP-BYYYY
May 01, 2022 (pdf) Jun 01, 2022 WTP-BYYYY
Apr 01, 2022 (pdf) May 02, 2022 WTP-BYYYY
Mar 01, 2022 (pdf) Apr 21, 2022
Late
WTP-BYYYY
Feb 01, 2022 (pdf) Mar 01, 2022 WTP-BYYYY
Jan 01, 2022 (pdf) Feb 07, 2022 WTP-BYYYY
Dec 01, 2021 (pdf) Jan 05, 2022 WTP-BYYYY
Nov 01, 2021 (pdf) Dec 06, 2021 WTP-BYYYY
Oct 01, 2021 (pdf) Nov 04, 2021 WTP-BYYYY
Sep 01, 2021 (pdf) Oct 04, 2021 WTP-BYYYY
Aug 01, 2021 (pdf) Sep 01, 2021 WTP-BYYYY
Jul 01, 2021 (pdf) Aug 04, 2021 WTP-BYYYY
Jun 01, 2021 (pdf) Jul 07, 2021 WTP-BYYYY
May 01, 2021 (pdf) Jun 01, 2021 WTP-BYYYY
Apr 01, 2021 (pdf) May 04, 2021 WTP-BYYYY
Mar 01, 2021 (pdf) Apr 05, 2021 WTP-BYYYY
Feb 01, 2021 (pdf) Mar 03, 2021 WTP-BYYYY
Jan 01, 2021 (pdf) Feb 03, 2021 WTP-BYYYY