Public water system · OR4100457
ActiveLake Oswego Municipal Water
Community water system in Clackamas County, Oregon, drawing primarily on purchased surface water.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40,000
Service connections
13,000
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | 71 | 7000 | No | Resolved |
| 2024-07-01 | 71 | 7000 | No | Resolved |
| 2019-01-01 | 27 | 1011 | No | Resolved |
| 2009-08-01 | 24 | 3100 | No | Resolved |
| 2008-04-01 | 03 | 2105 | No | Resolved |
| 2008-01-01 | 03 | 2380 | No | Resolved |
| 2008-01-01 | 03 | 2378 | No | Resolved |
| 2008-01-01 | 03 | 1040 | No | Resolved |
| 2008-01-01 | 03 | 2976 | No | Resolved |
| 2008-01-01 | 03 | 2969 | No | Resolved |
| 2008-01-01 | 03 | 2982 | No | Resolved |
| 2008-01-01 | 03 | 2985 | No | Resolved |
Lake Oswego Municipal Water: frequently asked questions
Is Lake Oswego Municipal Water's water safe to drink?
Lake Oswego Municipal Water is an active community water system regulated under the Safe Drinking Water Act, overseen by the OR state drinking water program. EPA SDWA violation and enforcement records for this system are being added to AquaCensus from EPA ECHO; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs Lake Oswego Municipal Water?
Lake Oswego Municipal Water (PWSID OR4100457) is a local government-owned community water system, regulated by the OR state drinking water program.
How many people does Lake Oswego Municipal Water serve?
Lake Oswego Municipal Water reports serving 40,000 people through 13,000 service connections in Clackamas County, Oregon.
Where does Lake Oswego Municipal Water get its water?
EPA SDWIS lists this system's primary water source as purchased surface water.
Other water systems in Clackamas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sunrise Water Authority | Clackamas | 50,003 | Community | Purchased surface water |
| Oregon City | Clackamas | 33,940 | Community | Purchased surface water |
| Oak Lodge Water Services | Clackamas | 30,000 | Community | Purchased surface water |
| Clackamas River Water | Clackamas | 29,918 | Community | Surface water |
| West Linn, City of | Clackamas | 28,000 | Community | Purchased surface water |
| Wilsonville, City of | Clackamas | 25,915 | Community | Surface water |