PlainEnviro

LAKE OSWEGO MUNICIPAL WATER

PWSID: OR4100457 · Lake Oswego, OR · Serves 40,000 people

Health Violations

LAKE OSWEGO MUNICIPAL WATER has 1 health-based violation out of 1 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served
40,000
Total Violations
1
Health Violations
1
Source Type
Surface Water

LAKE OSWEGO MUNICIPAL WATER (PWSID OR4100457) is a cws water system drawing from a surface water source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 40,000 people in Lake Oswego, OR, and is subject to primacy enforcement by the Oregon drinking-water program.

The system's federal compliance record contains 1 total violation, with 1 classified as health-based (MCL exceedances or treatment-technique failures). 1 distinct contaminant has been cited, including Combined Radium 226/228. Recorded violations span 2000–2000.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Oregon state drinking-water program's public portal.

System Details

EPA ID (PWSID)
OR4100457
System Type
CWS
Water Source
Surface Water
Location
Lake Oswego, OR
Population Served
40,000
Health Violations
Yes (1)

What contaminants are in this water system?

Contaminant Violations Health-Based
Combined Radium 226/228 1 1

Violation History (1)

Contaminant Health Date
Combined Radium 226/228 Yes Jan 1, 2000

Frequently Asked Questions

Is LAKE OSWEGO MUNICIPAL WATER water safe to drink?
LAKE OSWEGO MUNICIPAL WATER has 1 health-based violation out of 1 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses surface water water as its source.
How many people does LAKE OSWEGO MUNICIPAL WATER serve?
LAKE OSWEGO MUNICIPAL WATER serves 40,000 people in Lake Oswego, OR. It is classified as a CWS water system.
What violations does LAKE OSWEGO MUNICIPAL WATER have?
LAKE OSWEGO MUNICIPAL WATER has 1 total violation on record spanning 2000–2000. 1 are health-based violations involving contaminants exceeding EPA limits.
What contaminants have been found in LAKE OSWEGO MUNICIPAL WATER water?
Violations have been recorded for 1 contaminant. The most frequent: Combined Radium 226/228.

Nearby Water Systems

SUNRISE WATER AUTHORITY
Happy Valley · 50,003 served
Clean
OREGON CITY
Oregon City · 33,940 served
Clean
OAK LODGE WATER SERVICES
Milwaukie · 30,000 served
3 viol.
CLACKAMAS RIVER WATER
Clackamas · 29,918 served
Clean
WEST LINN, CITY OF
West Linn · 28,000 served
Clean
WILSONVILLE, CITY OF
Wilsonville · 25,915 served
Clean
CLACKAMAS RIVER WATER - CLAIRMONT
Clackamas · 19,928 served
1 viol.
CANBY UTILITY
Canby · 18,754 served
Clean
SANDY, CITY OF
Sandy · 12,991 served
44 viol.
GLADSTONE, CITY OF
Gladstone · 12,121 served
10 viol.
MOLALLA, CITY OF
Molalla · 10,298 served
Clean
ESTACADA, CITY OF
Estacada · 5,750 served
6 viol.

Explore More

Oregon Water Systems → All States → Contaminants →

About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →