CWSC LOS ALTOS SUBURBAN
Drinking water quality, contact, and Consumer Confidence Report
Serving 6 cities in CA · PWSID CA4310001
CWSC LOS ALTOS SUBURBAN serves 70,175 people. See EPA records and contact info below.
- People served
- 70,175
Data sources: EPA SDWIS, CWSC LOS ALTOS SUBURBAN's published Consumer Confidence Report, California Department of Environmental Protection.
This page summarizes publicly available EPA and CCR records. For health decisions about your water, consult your utility or a licensed professional.
Official CWSC LOS ALTOS SUBURBAN Resources
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CWSC LOS ALTOS SUBURBAN Service Area
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This map shows the approximate service area for CWSC LOS ALTOS SUBURBAN. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.
CWSC LOS ALTOS SUBURBAN 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 CWSC LOS ALTOS SUBURBAN Water Safe to Drink?
CWSC LOS ALTOS SUBURBAN 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 70,175 people across 6 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.
Get your water independently tested in California →How does California water quality rank nationally? →
CWSC LOS ALTOS SUBURBAN Service Area
Cupertino, CA
Los Altos, CA
Los Altos Hills, CA
Loyola, CA
Mountain View, CA
Sunnyvale, CA
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CWSC LOS ALTOS SUBURBAN Contact & Information
Phone
Emergency Line
24/7 After-Hours
Mailing Address
B2B Contact Data
B2B Contact Data Available
Contacts for CWSC LOS ALTOS SUBURBAN
| Name | Title | Phone | |
|---|---|---|---|
| J████ S████ | Water Treatment Supervisor | (555) ███-████ | j████@city████.gov |
| M████ J██████ | Utility Director | (555) ███-████ | m████@water████.org |
Water Sources & Treatment
Water Sources
Treatment Methods
Disinfectant Used
chloramines
CWSC LOS ALTOS SUBURBAN Consumer Confidence Report
A Consumer Confidence Report (CCR) is the EPA-mandated annual water-quality report every community water system must publish by July 1 each year (Safe Drinking Water Act §1414(c)(4)). It summarizes contaminants tested, MCL and MCLG comparisons, and any system violations from the prior calendar year.
A current CCR for CWSC LOS ALTOS SUBURBAN has not been published or validated on TapWaterData yet.
Residents: contact the utility directly using the phone number above, or check the EPA’s national CCR portal. Reports are typically distributed by mail or posted on the utility’s official website.
CWSC LOS ALTOS SUBURBAN Annual Water Quality Reports
Historical reports are being compiled. Check back soon for archived water quality data.
What is a CCR? The Consumer Confidence Report (CCR) is an annual water quality report that water utilities are required by the EPA to provide to customers. It contains information about your water source, detected contaminants, and compliance status.
Recommended Water Filters for CWSC LOS ALTOS SUBURBAN
Based on water quality data from cities served by CWSC LOS ALTOS SUBURBAN, we recommend NSF-certified filters that can remove contaminants above health guidelines.
Frequently Asked Questions about CWSC LOS ALTOS SUBURBAN
Is CWSC LOS ALTOS SUBURBAN water safe to drink?
Does CWSC LOS ALTOS SUBURBAN have PFAS in its water?
How do I pay my CWSC LOS ALTOS SUBURBAN water bill?
How many people does CWSC LOS ALTOS SUBURBAN serve?
What cities does CWSC LOS ALTOS SUBURBAN serve?
Does CWSC LOS ALTOS SUBURBAN have any EPA violations?
What is CWSC LOS ALTOS SUBURBAN's phone number?
Where can I find CWSC LOS ALTOS SUBURBAN's Consumer Confidence Report?
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How we built this page
Water-quality and contact data on this page comes from public federal and state records. We update each utility's record whenever its underlying source publishes new data — typically within days of an EPA SDWIS refresh.
- Contaminants & violations: EPA Safe Drinking Water Information System (SDWIS) plus the Unregulated Contaminant Monitoring Rule (UCMR-5) for PFAS and emerging contaminants.
- Annual reports: CWSC LOS ALTOS SUBURBAN's most recent published Consumer Confidence Report (CCR), where available.
- Service area & contact: EPA SDWIS plus the California Department of Environmental Protection / Drinking Water program.
Spotted a data issue? Use the Spotted something off? link at the bottom of the page — corrections feed back into the next data refresh. Learn more about TapWaterData.
Are you CWSC LOS ALTOS SUBURBAN? Publish your 2027 CCR
TapWaterData runs a free CCR publishing service for community water systems. Claim this listing to publish your Consumer Confidence Report here — it inherits this page's search authority and reaches every customer who Googles CWSC LOS ALTOS SUBURBAN.
- EPA-compliant distribution. Satisfies the 2027 Revised CCR Rule direct-URL requirement with an auditable archive.
- Publish once a year. Agent-assisted workflow; no login setup for small systems.
- Inherits this page's reach. Your published CCR appears directly on the page customers already find on Google.
Free for operators. No card required. Typical setup: 5 minutes.
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