OHA Drinking Water Services
OR41
PWS ID: 00587 ---- ONTARIO, 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, 2026 (pdf) Mar 06, 2026 WTP-A1YYYYY
Feb 01, 2026 (pdf) Mar 06, 2026 WTP-A2YYYYY
Jan 01, 2026 (pdf) Feb 06, 2026 WTP-A1YYYYY
Jan 01, 2026 (pdf) Feb 06, 2026 WTP-A2YYYYY
Dec 01, 2025 (pdf) Jan 05, 2026 WTP-A1YYYYY
Dec 01, 2025 (pdf) Jan 05, 2026 WTP-A2YYYYY
Nov 01, 2025 (pdf) Dec 09, 2025 WTP-A1YYYYY
Nov 01, 2025 (pdf) Dec 09, 2025 WTP-A2YYYYY
Oct 01, 2025 (pdf) Nov 10, 2025 WTP-A1YYYYY
Oct 01, 2025 (pdf) Nov 10, 2025 WTP-A2YYYYY
Sep 01, 2025 (pdf) Oct 10, 2025 WTP-A1YYYYY
Sep 01, 2025 (pdf) Oct 10, 2025 WTP-A2YYYYY
Aug 01, 2025 (pdf) Sep 09, 2025 WTP-A1YYYYY
Aug 01, 2025 (pdf) Sep 09, 2025 WTP-A2YYYYY
Jul 01, 2025 (pdf) Aug 07, 2025 WTP-A1YYYYY
Jul 01, 2025 (pdf) Aug 07, 2025 WTP-A2YYYYY
Jun 01, 2025 (pdf) Jul 07, 2025 WTP-A1YYYYY
Jun 01, 2025 (pdf) Jul 07, 2025 WTP-A2YYYYY
May 01, 2025 (pdf) Jun 06, 2025 WTP-A1YYYYY
May 01, 2025 (pdf) Jun 06, 2025 WTP-A2YYYYY
Apr 01, 2025 (pdf) May 09, 2025 WTP-A1YYYYY
Apr 01, 2025 (pdf) May 09, 2025 WTP-A2YYYYY
Mar 01, 2025 (pdf) Apr 08, 2025 WTP-A1YYYYY
Mar 01, 2025 (pdf) Apr 08, 2025 WTP-A2YYYYY
Feb 01, 2025 (pdf) Mar 10, 2025 WTP-A1YYYYY
Feb 01, 2025 (pdf) Mar 10, 2025 WTP-A2YYYYY
Jan 01, 2025 (pdf) Feb 05, 2025 WTP-A1YYYYY
Jan 01, 2025 (pdf) Feb 05, 2025 WTP-A2YYYYY
Dec 01, 2024 (pdf) Jan 08, 2025 WTP-A1YYYYY
Dec 01, 2024 (pdf) Jan 08, 2025 WTP-A2YYYYY
Nov 01, 2024 (pdf) Dec 09, 2024 WTP-A1YYYYY
Nov 01, 2024 (pdf) Dec 09, 2024 WTP-A2YYYYY
Oct 01, 2024 (pdf) Nov 06, 2024 WTP-A1YYYYY
Oct 01, 2024 (pdf) Nov 06, 2024 WTP-A2YYYYY
Sep 01, 2024 (pdf) Oct 02, 2024 WTP-A1YYYYY
Sep 01, 2024 (pdf) Oct 02, 2024 WTP-A2YYYYY
Aug 01, 2024 (pdf) Sep 08, 2024 WTP-A1YYYYY
Aug 01, 2024 (pdf) Sep 08, 2024 WTP-A2YYYYY
Jul 01, 2024 (pdf) Aug 08, 2024 WTP-A1YYYYY
Jul 01, 2024 (pdf) Aug 08, 2024 WTP-A2YYYYY
Jun 01, 2024 (pdf) Jul 08, 2024 WTP-A1YYYYY
Jun 01, 2024 (pdf) Jul 08, 2024 WTP-A2YYYYY
May 01, 2024 (pdf) Jun 07, 2024 WTP-A1YYYYY
May 01, 2024 (pdf) Jun 07, 2024 WTP-A2YYYYY
Apr 01, 2024 (pdf) May 03, 2024 WTP-A1YYYYY
Apr 01, 2024 (pdf) May 03, 2024 WTP-A2YYYYY
Mar 01, 2024 (pdf) Apr 05, 2024 WTP-A1YYYYY
Mar 01, 2024 (pdf) Apr 05, 2024 WTP-A2YYYYY
Feb 01, 2024 (pdf) Mar 06, 2024 WTP-A1YYYYY
Feb 01, 2024 (pdf) Mar 06, 2024 WTP-A2YYYYY
Jan 01, 2024 (pdf) Feb 05, 2024 WTP-A1YYYYY
Jan 01, 2024 (pdf) Feb 05, 2024 WTP-A2YYYYY
Dec 01, 2023 (pdf) Jan 04, 2024 WTP-A1YYYYY
Dec 01, 2023 (pdf) Jan 04, 2024 WTP-A2YYYYY
Nov 01, 2023 (pdf) Dec 05, 2023 WTP-A1YYYYY
Nov 01, 2023 (pdf) Dec 05, 2023 WTP-A2YYYYY
Oct 01, 2023 (pdf) Nov 08, 2023 WTP-A1YYYYY
Oct 01, 2023 (pdf) Nov 07, 2023 WTP-A2YYYYY
Sep 01, 2023 (pdf) Oct 03, 2023 WTP-A1YYYYY
Sep 01, 2023 (pdf) Oct 03, 2023 WTP-A2YYYYY
Aug 01, 2023 (pdf) Sep 05, 2023 WTP-A1YYYYY
Aug 01, 2023 (pdf) Sep 05, 2023 WTP-A2YYYYY
Jul 01, 2023 (pdf) Aug 03, 2023 WTP-A1YYYYY
Jul 01, 2023 (pdf) Aug 03, 2023 WTP-A2YYYYY
Jun 01, 2023 (pdf) Jul 05, 2023 WTP-A1YYYYY
Jun 01, 2023 (pdf) Jul 05, 2023 WTP-A2YYYYY
May 01, 2023 (pdf) Jun 02, 2023 WTP-A1YYYYY
May 01, 2023 (pdf) Jun 02, 2023 WTP-A2YYYYY
Apr 01, 2023 (pdf) May 02, 2023 WTP-A1YYYYY
Apr 01, 2023 (pdf) May 02, 2023 WTP-A2YYYYY
Mar 01, 2023 (pdf) Apr 20, 2023
Late
WTP-A1YYYYY
Mar 01, 2023 (pdf) Apr 20, 2023
Late
WTP-A2YYYYY
Feb 01, 2023 (pdf) Mar 06, 2023 WTP-A1YYYYY
Feb 01, 2023 (pdf) Mar 06, 2023 WTP-A2YYYYY
Jan 01, 2023 (pdf) Feb 03, 2023 WTP-A1YYYYY
Jan 01, 2023 (pdf) Feb 03, 2023 WTP-A2YYYYY
Dec 01, 2022 (pdf) Jan 03, 2023 WTP-A1YYYYY
Dec 01, 2022 (pdf) Jan 03, 2023 WTP-A2YYYYY
Nov 01, 2022 (pdf) Dec 08, 2022 WTP-A1YYYYY
Nov 01, 2022 (pdf) Dec 08, 2022 WTP-A2YYYYY
Oct 01, 2022 (pdf) Nov 08, 2022 WTP-A1YYYYY
Oct 01, 2022 (pdf) Nov 08, 2022 WTP-A2YYYYY
Sep 01, 2022 (pdf) Oct 07, 2022 WTP-A1YYYYY
Sep 01, 2022 (pdf) Oct 07, 2022 WTP-A2YYYYY
Aug 01, 2022 (pdf) Sep 06, 2022 WTP-A1YYYYY
Aug 01, 2022 (pdf) Sep 06, 2022 WTP-A2YYYYY
Jul 01, 2022 (pdf) Aug 05, 2022 WTP-A1YYYYY
Jul 01, 2022 (pdf) Aug 05, 2022 WTP-A2YYYYY
Jun 01, 2022 (pdf) Jul 07, 2022 WTP-A1YYYYY
Jun 01, 2022 (pdf) Jul 07, 2022 WTP-A2YYYYY
May 01, 2022 (pdf) Jun 06, 2022 WTP-A1YYYYY
May 01, 2022 (pdf) Jun 06, 2022 WTP-A2YYYYY
Apr 01, 2022 (pdf) May 06, 2022 WTP-A1YYYYY
Apr 01, 2022 (pdf) May 06, 2022 WTP-A2YYYYY
Mar 01, 2022 (pdf) Apr 05, 2022 WTP-A1YYYYY
Mar 01, 2022 (pdf) Apr 05, 2022 WTP-A2YYYYY
Feb 01, 2022 (pdf) Mar 04, 2022 WTP-A1YYYYY
Feb 01, 2022 (pdf) Mar 04, 2022 WTP-A2YYYYY
Jan 01, 2022 (pdf) Feb 07, 2022 WTP-A1YYYYY
Jan 01, 2022 (pdf) Feb 07, 2022 WTP-A2YYYYY
Dec 01, 2021 (pdf) Jan 05, 2022 WTP-A1YYYYY
Dec 01, 2021 (pdf) Jan 05, 2022 WTP-A2YYYYY
Nov 01, 2021 (pdf) Dec 02, 2021 WTP-A1YYYYY
Nov 01, 2021 (pdf) Dec 02, 2021 WTP-A2YYYYY
Oct 01, 2021 (pdf) Nov 04, 2021 WTP-A1YYYYY
Oct 01, 2021 (pdf) Nov 04, 2021 WTP-A2YYYYY
Sep 01, 2021 (pdf) Oct 08, 2021 WTP-A1YYYYY
Sep 01, 2021 (pdf) Oct 08, 2021 WTP-A2YYYYY
Aug 01, 2021 (pdf) Sep 08, 2021 WTP-A1YYYYY
Aug 01, 2021 (pdf) Sep 08, 2021 WTP-A2YYYYY
Jul 01, 2021 (pdf) Aug 06, 2021 WTP-A1YYYYY
Jul 01, 2021 (pdf) Aug 06, 2021 WTP-A2YYYYY
Jun 01, 2021 (pdf) Jul 08, 2021 WTP-A1YYYYY
Jun 01, 2021 (pdf) Jul 08, 2021 WTP-A2YYYYY
May 01, 2021 (pdf) Jun 07, 2021 WTP-A1YYYYY
May 01, 2021 (pdf) Jun 07, 2021 WTP-A2YYYYY
Apr 01, 2021 (pdf) May 05, 2021 WTP-A1YYYYY
Apr 01, 2021 (pdf) May 05, 2021 WTP-A2YYYYY
Mar 01, 2021 (pdf) Apr 09, 2021 WTP-A1YYYYY
Mar 01, 2021 (pdf) Apr 09, 2021 WTP-A2YYYYY
Feb 01, 2021 (pdf) Mar 05, 2021 WTP-A1YYYYY
Feb 01, 2021 (pdf) Mar 05, 2021 WTP-A2YYYYY
Jan 01, 2021 (pdf) Feb 10, 2021 WTP-A1YYYYY
Jan 01, 2021 (pdf) Feb 10, 2021 WTP-A2YYYYY