B78/100
LONGVIEW WATER DEPARTMENT — Water Quality Report 2026
Serving 49,111 people · Washington
Water Source
Groundwater
County
—
System ID
WA5348100
Violations
14
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.60 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
4
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2025 – September 25, 2025Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – April 25, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2022 – March 31, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – April 25, 2024Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About LONGVIEW WATER DEPARTMENT
Is LONGVIEW WATER DEPARTMENT water safe to drink?
LONGVIEW WATER DEPARTMENT water receives a grade of B (78/100), which is considered good. Out of 67 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has LONGVIEW WATER DEPARTMENT detected?
67 contaminants were tested in LONGVIEW WATER DEPARTMENT's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does LONGVIEW WATER DEPARTMENT have any EPA violations?
Yes, LONGVIEW WATER DEPARTMENT has 14 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR.
How many people does LONGVIEW WATER DEPARTMENT serve?
LONGVIEW WATER DEPARTMENT serves approximately 49,111 people, Washington.
What type of water does LONGVIEW WATER DEPARTMENT provide?
LONGVIEW WATER DEPARTMENT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5348100.
How does LONGVIEW WATER DEPARTMENT compare to other utilities in Washington?
LONGVIEW WATER DEPARTMENT scores 78/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Washington state page for a full comparison of water systems.