OHA Drinking Water Services
OR41
PWS ID: 91556 ---- CASCADE GORGE PROPERTIES
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
Feb 01, 2026 (xlsx) Mar 01, 2026 WTP-AYYYY
Jan 01, 2026 (xlsx) Feb 02, 2026 WTP-AYYYY
Dec 01, 2025 (xlsx) Jan 04, 2026 WTP-AYYYY
Nov 01, 2025 (xlsx) Dec 07, 2025 WTP-AYYYY
Oct 01, 2025 (xlsx) Nov 03, 2025 WTP-AYYYY
Sep 01, 2025 (xlsx) Oct 05, 2025 WTP-AYYYY
Aug 01, 2025 (xlsx) Sep 02, 2025 WTP-AYYYY
Jul 01, 2025 (xlsx) Aug 08, 2025 WTP-AYYYY
Jun 01, 2025 (xlsx) Jul 02, 2025 WTP-AYYYY
May 01, 2025 (xlsx) Jun 01, 2025 WTP-AYYYY
Apr 01, 2025 (xlsx) May 05, 2025 WTP-AYYYY
Mar 01, 2025 (xlsx) Apr 02, 2025 WTP-AYYYY
Feb 01, 2025 (xlsx) Mar 02, 2025 WTP-AYYYY
Jan 01, 2025 (xlsx) Feb 04, 2025 WTP-AYYYY
Dec 01, 2024 (xlsx) Jan 06, 2025 WTP-AYYYY
Nov 01, 2024 (xlsx) Dec 03, 2024 WTP-AYYYY
Oct 01, 2024 (xlsx) Nov 05, 2024 WTP-AYYYY
Sep 01, 2024 (pdf) Oct 06, 2024 WTP-AYYN
Incomplete
N
Incomplete
Aug 01, 2024 (pdf) Sep 05, 2024 WTP-AYYNN
Jul 01, 2024 (xlsx) Aug 02, 2024 WTP-AYYYY
Jun 01, 2024 (xlsx) Jul 07, 2024 WTP-AYYYY
May 01, 2024 (xlsx) Jun 08, 2024 WTP-AYYYY
Apr 01, 2024 (xlsx) May 03, 2024 WTP-AYYYY
Mar 01, 2024 (xlsx) Apr 03, 2024 WTP-AYYYY
Feb 01, 2024 (xlsx) Mar 07, 2024 WTP-AYYYY
Jan 01, 2024 (xlsx) Feb 08, 2024 WTP-AYYYY
Dec 01, 2023 (xlsx) Jan 08, 2024 WTP-AYYYY
Nov 01, 2023 (xlsx) Dec 08, 2023 WTP-AYYYY
Oct 01, 2023 (xlsx) Nov 06, 2023 WTP-AYYYY
Sep 01, 2023 (pdf) Oct 06, 2023 WTP-AYYYY
Aug 01, 2023 (pdf) Sep 06, 2023 WTP-AYYYY
Jul 01, 2023 (pdf) Aug 02, 2023 WTP-AYYYY
Jun 01, 2023 (pdf) Jul 07, 2023 WTP-AYYYY
May 01, 2023 (xlsx) Jun 07, 2023 WTP-AYYYY
Apr 01, 2023 (pdf) May 08, 2023 WTP-AYYYY
Mar 01, 2023 (pdf) Apr 03, 2023 WTP-AYYYY
Feb 01, 2023 (pdf) Mar 02, 2023 WTP-AYYYY
Jan 01, 2023 (pdf) Feb 06, 2023 WTP-AYYYY
Dec 01, 2022 (pdf) Jan 03, 2023 WTP-AYYYY
Nov 01, 2022 (pdf) Dec 05, 2022 WTP-ANNYY
Oct 01, 2022 (pdf) Nov 23, 2022
Late
WTP-ANNYY
Sep 01, 2022 (pdf) Oct 07, 2022 WTP-AYYYY
May 01, 2022 (pdf) Jun 16, 2022
Late
WTP-AYYNY
Apr 01, 2022 (pdf) May 06, 2022 WTP-AYYNY
Mar 01, 2022 (pdf) Apr 05, 2022 WTP-AYYNY
Feb 01, 2022 (pdf) Mar 15, 2022
Late
WTP-ANN
Jan 01, 2022 (pdf) Feb 21, 2022
Late
WTP-ANN
Dec 01, 2021 (pdf) Jan 04, 2022 WTP-AYYYY
Nov 01, 2021 (pdf) Dec 09, 2021 WTP-AYYYY
Jun 01, 2021 (pdf) Jul 22, 2021
Late
WTP-AYYYY
May 01, 2021 (pdf) Jul 22, 2021
Late
WTP-AYYYY
Apr 01, 2021 (pdf) May 05, 2021 WTP-AYYYY
Mar 01, 2021 (pdf) Apr 08, 2021 WTP-AYYYY
Jan 01, 2021 (pdf) Feb 10, 2021 WTP-AYYYY