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WaterSafety

Alderwood Water District

Lynnwood, Washington · PWSID: WA5301300

A
Water Safety Score
100/100
200,000
Population Served
Surface water
Source Type
0
Health Violations
0
Contaminant Exceedances

Detected Contaminants

ContaminantDetected LevelMCL (Limit)StatusSample Date
Total Trihalomethanes40 ppb80 ppbWithin LimitOct 1, 2023
Haloacetic Acids (HAA5)30 ppb60 ppbWithin LimitOct 1, 2023

Violation History

Total Trihalomethanes
Treatment TechniqueOct 1, 2023 - Dec 31, 2023
Open
Haloacetic Acids (HAA5)
Treatment TechniqueOct 1, 2023 - Dec 31, 2023
Open
Haloacetic Acids (HAA5)
Treatment TechniqueJan 1, 2024 - Mar 31, 2024
Open
Total Trihalomethanes
Treatment TechniqueJan 1, 2024 - Mar 31, 2024
Open

Frequently Asked Questions

Alderwood Water District has a Water Safety Score of A (100/100). The system serves 200,000 people and has 0 health violations on record. Check the contaminant table above for specific detected substances.

Alderwood Water District has 0 contaminant exceedances above EPA health guidelines. See the full contaminant detection table above for all tested substances and their levels relative to legal limits and health guidelines.

The Water Safety Score (0-100, grades A through F) is based on contaminant levels relative to legal limits, health guideline exceedances, violation history, and enforcement actions. Higher scores indicate fewer concerns.

If your water system has violations, request the Consumer Confidence Report from your utility, consider getting an independent water test from a certified lab, and look into certified water filters for specific contaminants of concern. For lead, run cold water for 30 seconds before drinking.

Sources: EPA SDWIS, EWG Tap Water Database
Last updated:

Water quality data sourced from EPA's Safe Drinking Water Information System (SDWIS). Safety scores are calculated based on contaminant levels, violations, and enforcement history. This is not a substitute for your utility's official Consumer Confidence Report.