OHA Drinking Water Services
OR41 00457 LAKE OSWEGO MUNICIPAL WATER Classification: COMMUNITY
Contact: CRAIG SMITH Phone: 503-635-0280 View on Map
17601 PILKINGTON RD County: CLACKAMAS
LAKE OSWEGO, OR 97035 Activity Status: Active -- History
Population: 40,000 Number of Connections: 13,000
Operating Period: January 1 to December 31 Regulating Agency: REGION 1
Certified Operator(s) Owner Type: LOCAL GOVERNMENT
Required: Y Licensed By: N/A
Distribution class: 3 Last Survey Date:  Oct 16, 2025
Treatment class: None
Filtration Endorsement Required: No Source Water Protection Status - Award Granted! 11/2024

Sources
Facility ID Facility Name Activity Status Availability Source Type
EP-C EP FOR LAKE OSWEGO - TIGARD WATER SUPPLY A SW
SRC-CA LAKE OSWEGO-TIGARD WATER SUPPLY - 01542 A Permanent SWP
Show Disconnected and Abandoned Sources
Find Purchasers/Sellers


Treatment
Facility ID Facility Name Filter Type Giardia Removal
Credit
Treatment Process Treatment Objective

Consumer Confidence Reports (Last 5 Years)
For Year Date Received Date Certified
2025 Due 7/1/2026 Due 7/11/2026
2024 9/2/2025 6/2/2025
2023 7/3/2024 5/29/2024
2022 6/14/2023 6/14/2023
2021 5/18/2022 5/18/2022

Cross Connection/Backflow Prevention Information (Last 5 Years)
Enabling Authority Received Annual Summary Report Cross Connection Fee Status
Yes (pdf) 2025 - Due 3/31/2026
2024 - Received (pdf)
2023 - Received (pdf)
2022 - Received (pdf)
2021 - Received (pdf)
2026 - Paid
2025 - Paid
2024 - Paid
2023 - Paid
2022 - Paid