| OR41 01542 | LAKE OSWEGO - TIGARD WATER SUPPLY | Classification: COMMUNITY - Wholesale |
|---|---|---|
| Contact: | DAVE TROTTER | Phone: 503-635-0392 View on Map |
| 4260 KENTHORPE WAY | County: CLACKAMAS | |
| WEST LINN, OR 97068 | Activity Status: Active Jan 01, 2020 -- History | |
| Population: 105,000 | Number of Connections: 2 | |
| 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: None | Last Survey Date: Jul 19, 2022 - Outstanding Performer! | |
| Treatment class: 4 | ||
| Filtration Endorsement Required: No | Source Water Protection Status - Award Granted! 09/2025 | |
| Sources | |||||
|---|---|---|---|---|---|
| Facility ID | Facility Name | Activity Status | Availability | Source Type | |
| EP-A | EP FOR CLACKAMAS RIVER | A | SW | ||
| SRC-AA | CLACKAMAS RIVER | A | Permanent | SW | |
| Treatment | |||||
|---|---|---|---|---|---|
| Facility ID | Facility Name | Filter Type | Giardia Removal Credit |
Treatment Process | Treatment Objective |
| WTP-A | TP FOR CLACKAMAS RIVER | Conventional Filtration | 2.5-log | FILTRATION, RAPID SAND | PARTICULATE REMOVAL |
| HYPOCHLORINATION, POST | DISINFECTION | ||||
| PH ADJ-CAUSTIC SODA | CORROSION CONTROL | ||||
| OZONATION, PRE | DISINFECTION | ||||
| COAGULATION | PARTICULATE REMOVAL | ||||
| FLOCCULATION | PARTICULATE REMOVAL | ||||
| RAPID MIX | PARTICULATE REMOVAL | ||||
| SEDIMENTATION | PARTICULATE REMOVAL | ||||
| Consumer Confidence Reports (Last 5 Years) | |||
|---|---|---|---|
| Only non-wholesale community water systems require consumer confidence reports. |
| Cross Connection/Backflow Prevention Information (Last 5 Years) | ||
|---|---|---|
| Enabling Authority Received | Annual Summary Report | Cross Connection Fee Status |
| Not received | 2025 - Due 3/31/2026 2024 - Not received 2023 - Not received 2022 - Not received 2021 - Not received |
2026 - Not required 2025 - Not required 2024 - Not required 2023 - Not required 2022 - Not required |