GSWC - NORWALK
Serving 4 cities in CA
Official GSWC - NORWALK Resources
GSWC - NORWALK Service Area
Loading map...
This map shows the approximate service area for GSWC - NORWALK. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.
GSWC - NORWALK Water Quality Grade
Some contaminants exceed health guidelines.
Grade is calculated based on contaminants exceeding health guidelines (MCLG) and EPA Maximum Contaminant Level violations. A = Excellent (90-100), B = Good (80-89), C = Fair (70-79), D = Poor (60-69), F = Failing (<60).
Is GSWC - NORWALK Water Safe to Drink?
GSWC - NORWALK has reported 3 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.
This utility serves 42,997 people across 4 cities in CA. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.
GSWC - NORWALK Service Area
GSWC - NORWALK Contact & Information
Mailing Address
Water Sources & Treatment
Water Sources
Treatment Methods
Disinfectant Used
chloramines, chlorine, hydrogen peroxide, hypochlorite, ozone
Recommended Water Filters for GSWC - NORWALK
Based on water quality data from cities served by GSWC - NORWALK, we recommend NSF-certified filters that can remove contaminants above health guidelines.
Stay Informed About Your Water Quality
Get EPA reports, filter recommendations, and safety alerts for your area.
Join 10,000+ people protecting their families. Unsubscribe anytime.