B77/100
Maple Falls Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 2,648 residents · Washington
What's In Maple Falls's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2016.
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
Water Utility Details
Columbia Valley Water District
Population Served
2,648
Water Source
Groundwater
System ID
WA5366110
Frequently Asked Questions About Maple Falls Water
Is Maple Falls tap water safe to drink?
Maple Falls, Washington tap water receives a grade of B (77/100), which is considered good. Out of 31 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Maple Falls's water?
Of the 31 contaminants tested in Maple Falls's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Maple Falls have any water quality violations?
Yes, Maple Falls has 20 EPA violation(s) on record, with the most recent in 2016. Violation types include Other, MR. None of these are classified as health-based violations.
Do I need a water filter in Maple Falls?
Maple Falls water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Maple Falls's tap water come from?
Maple Falls's drinking water is sourced from groundwater and supplied by Columbia Valley Water District. The system serves approximately 2,648 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Maple Falls's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Maple Falls's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Maple Falls's water compare to other cities in Washington?
Maple Falls's water quality score of 77/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Washington state page to see how all cities in the state compare.
What should I do if I'm concerned about Maple Falls's water quality?
If you have concerns about Maple Falls's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (Columbia Valley Water District) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.