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Home/Utilities/California/ESTERO MUNICIPAL IMPROVEMENT DISTRICT

ESTERO MUNICIPAL IMPROVEMENT DISTRICT

Drinking water quality, contact, and Consumer Confidence Report

Serving 2 cities in CA Β· PWSID CA4110021

ESTERO MUNICIPAL IMPROVEMENT DISTRICT serves 36,556 people. See EPA records and contact info below.

No Violations
No violations on record
People served
36,556

Data sources: EPA SDWIS, ESTERO MUNICIPAL IMPROVEMENT DISTRICT'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.

37K
People Served
2
Cities
1
Water Sources
0
MCL Violations

Official ESTERO MUNICIPAL IMPROVEMENT DISTRICT Resources

ESTERO MUNICIPAL IMPROVEMENT DISTRICT Service Area

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Service Area

This map shows the approximate service area for ESTERO MUNICIPAL IMPROVEMENT DISTRICT. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.

ESTERO MUNICIPAL IMPROVEMENT DISTRICT Water Quality Grade

A
Excellent

Water meets all health guidelines with no violations.

Quality Score100/100
0
Above Health Guidelines
0
EPA Violations

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 ESTERO MUNICIPAL IMPROVEMENT DISTRICT Water Safe to Drink?

ESTERO MUNICIPAL IMPROVEMENT DISTRICT water currently meets all EPA Maximum Contaminant Level Goals (MCLGs) across all cities served. Water quality testing shows all contaminants are within safe levels according to health-based guidelines.

This utility serves 36,556 people across 2 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 β†’How does California water quality rank nationally? β†’

ESTERO MUNICIPAL IMPROVEMENT DISTRICT Service Area

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ESTERO MUNICIPAL IMPROVEMENT DISTRICT Contact & Information

Phone

Mailing Address

100 Lincoln Center Drive Foster City, CA 94404

B2B Contact Data

B2B Contact Data Available

Contacts for ESTERO MUNICIPAL IMPROVEMENT DISTRICT

Updated Jan 2026
Sample Preview (masked)
NameTitlePhoneEmail
Jβ–ˆβ–ˆβ–ˆβ–ˆ Sβ–ˆβ–ˆβ–ˆβ–ˆWater Treatment Supervisor(555) β–ˆβ–ˆβ–ˆ-β–ˆβ–ˆβ–ˆβ–ˆjβ–ˆβ–ˆβ–ˆβ–ˆ@cityβ–ˆβ–ˆβ–ˆβ–ˆ.gov
Mβ–ˆβ–ˆβ–ˆβ–ˆ Jβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆβ–ˆUtility Director(555) β–ˆβ–ˆβ–ˆ-β–ˆβ–ˆβ–ˆβ–ˆmβ–ˆβ–ˆβ–ˆβ–ˆ@waterβ–ˆβ–ˆβ–ˆβ–ˆ.org
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Water Sources & Treatment

Water Sources

Surface water purchased

Treatment Methods

conventionalfiltrationno treatment

Disinfectant Used

chloramines, hypochlorite, no disinfectant, uv light

ESTERO MUNICIPAL IMPROVEMENT DISTRICT 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 Β§1414(c)(4)). It summarizes contaminants tested, MCL and MCLG comparisons, and any system violations from the prior calendar year.

A current CCR for ESTERO MUNICIPAL IMPROVEMENT DISTRICT has not been published or validated on TapWaterData yet.

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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.

Frequently Asked Questions about ESTERO MUNICIPAL IMPROVEMENT DISTRICT

Is ESTERO MUNICIPAL IMPROVEMENT DISTRICT water safe to drink?

ESTERO MUNICIPAL IMPROVEMENT DISTRICT water currently meets all EPA Maximum Contaminant Level Goals (MCLGs). Water quality testing shows all contaminants are within safe levels according to health-based guidelines.

Does ESTERO MUNICIPAL IMPROVEMENT DISTRICT have PFAS in its water?

ESTERO MUNICIPAL IMPROVEMENT DISTRICT has PFAS monitoring data on record and no PFAS compounds are currently above EPA health-based guidelines. EPA finalized new PFAS drinking-water rules in 2024 requiring ongoing monitoring through 2029.

How do I pay my ESTERO MUNICIPAL IMPROVEMENT DISTRICT water bill?

ESTERO MUNICIPAL IMPROVEMENT DISTRICT bills can be paid at the utility's official payment portal: https://www.fostercity.org/finance/page/setup-pay-water-bill-online. For questions about your bill, call 650-286-3546.

How many people does ESTERO MUNICIPAL IMPROVEMENT DISTRICT serve?

ESTERO MUNICIPAL IMPROVEMENT DISTRICT serves 36,556 people across 2 cities in CA.

What cities does ESTERO MUNICIPAL IMPROVEMENT DISTRICT serve?

ESTERO MUNICIPAL IMPROVEMENT DISTRICT provides water service to: Foster City, CA; San Mateo, CA.

Does ESTERO MUNICIPAL IMPROVEMENT DISTRICT have any EPA violations?

No, ESTERO MUNICIPAL IMPROVEMENT DISTRICT has no MCL violations on record.

What is ESTERO MUNICIPAL IMPROVEMENT DISTRICT's phone number?

You can contact ESTERO MUNICIPAL IMPROVEMENT DISTRICT at 650-286-3546. Their mailing address is: 100 Lincoln Center Drive Foster City, CA 94404.

Where can I find ESTERO MUNICIPAL IMPROVEMENT DISTRICT's Consumer Confidence Report?

Community water systems must publish an annual CCR. If you're looking for ESTERO MUNICIPAL IMPROVEMENT DISTRICT's CCR, contact them at 650-286-3546 or check back here β€” we update monthly. The 2027 revised CCR Rule introduces new direct-URL distribution requirements.

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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 β€” typically within days of an EPA SDWIS refresh.

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Are you ESTERO MUNICIPAL IMPROVEMENT DISTRICT? Publish your 2027 CCR

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