OHA Drinking Water Services
OR41
PWS ID: 00164 ---- CANNON BEACH, 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
Oct 01, 2025 (pdf) Mar 11, 2026
Late
 WTP-AEYYYY
Sep 01, 2025 (pdf) Oct 10, 2025 WTP-AEYYYY
Aug 01, 2025 (pdf) Sep 01, 2025 WTP-AEYYYY
Jul 01, 2025 (pdf) Aug 04, 2025 WTP-AEYYYY
Jun 01, 2025 (pdf) Jul 10, 2025 WTP-AEYYYY
May 01, 2025 (pdf) Jun 10, 2025 WTP-AEYYYY
Dec 01, 2023 (pdf) Dec 27, 2023 WTP-AEYYYY
Nov 01, 2023 (pdf) Dec 05, 2023 WTP-AEYYYY
Oct 01, 2023 (pdf) Nov 13, 2023
Late
 WTP-AEYYYY
Sep 01, 2023 (pdf) Oct 06, 2023 WTP-AEYYYY
Aug 01, 2023 (pdf) Sep 05, 2023 WTP-AEYYYY
Jul 01, 2023 (pdf) Aug 04, 2023 WTP-AEYYYY
Sep 01, 2021 (pdf) Oct 06, 2021 WTP-AEYYYY
Aug 01, 2021 (pdf) Oct 06, 2021
Late
 WTP-AEYYYY