ZIP Code 94607 Water Quality & Testing Report
Oakland, CA · Alameda County County · Updated for 2026
Is Tap Water Safe to Drink in ZIP 94607 (Oakland, CA)?
Yes, tap water in ZIP code 94607 (Oakland, CA) is safe to drink under EPA Safe Drinking Water Act standards. Supplied by East Bay Municipal Utility District, the area earns an EPA Safety Grade of B (79/100) with 1 health violations, 3.3 ppb lead, and hard (125 mg/L / 7.3 GPG) water.
Water Safety Grade
Good — Minor issues on record
Health Violations
1
Total Violations
2
Lead Risk
High
Contaminants
1
Active Water Quality Issues Detected
EPA records show 2 unresolved violations. Contact East Bay Municipal Utility District for current status.
About Tap Water in ZIP Code 94607
Tap water in ZIP code 94607 (Oakland, CA) is distributed by East Bay Municipal Utility District (EPA ID: CA0110005), serving approximately 1,442,800 residents. Based on EPA Safe Drinking Water Act compliance records, this system receives a water safety grade of B with a composite quality score of 79/100.
Water System
East Bay Municipal Utility District
EPA ID: CA0110005
Water Source
Surface Water
Population Served
1,442,800 residents
County
Alameda County County, California
Lead Levels in ZIP 94607
EPA action level: 15 ppb | Public health goal: 0 ppb
Lead Level: 3.3 ppb — Very Low
Lead exposure risk in 94607 is rated High. EPA models estimate a 49% exposure probability based on housing and infrastructure age.
EPA model estimate based on housing age and infrastructure
Water Hardness & Mineral Content
Grains per gallon (GPG) & Parts per million (PPM / mg/L)
Water in ZIP 94607 is Hard (125 mg/L / 7.3 GPG). Residents may notice white mineral spots on glassware, reduced soap efficiency, and mineral scale on faucets and showerheads.
Grains per gallon
Parts per million CaCO3
Official EPA SDWIS Database Entry
Utility: East Bay Municipal Utility District · PWSID: CA0110005
Violation History
Past 5 years — EPA SDWIS data
East Bay Municipal Utility District has recorded 1 health-based violation out of 2 total violations over the past 5 years. 2 violations remain unresolved in EPA tracking records.
Regulatory compliance risk for this utility is rated Low based on past reporting and enforcement records.
Contaminants Detected
Contaminants with health-based violations on record
EPA records identify 1 contaminant with health-based violations in the past 5 years: E. coli.
From Consumer Confidence Report:
Lead (13.3 ppb); Chloramine as chlorine (3.73 ppm); Haloacetic acids, 5 species (53 ppb); Trihalomethanes (68 ppb); Specific Conductance (530 μS/cm)
⚖ Enforcement Actions
Water Source & Environmental Factors
Surface Water
This system draws water from lakes, rivers, or reservoirs. Surface water is treated to remove sediment, microorganisms, and chemical contaminants before reaching taps.
Moderate potential
% of household income spent on energy — indicator of older infrastructure
EPA Radon Zone 2 — moderate radon potential. The EPA recommends testing your home regardless of zone designation.
Water Quality Testing in ZIP 94607
Tap Water & Well Testing Recommendations
Residents in ZIP code 94607 served by East Bay Municipal Utility District can test tap water or private well systems to verify water purity. Testing detects hidden contaminants before they impact family health.
Tap Water Testing Steps
- 1.Conduct a certified lead check if your home was constructed before 1986.
- 2.Use certified lab testing kits rather than uncalibrated test strips for regulated compliance.
- 3.Sample water from both your kitchen faucet and water heater to compare line purity.
Private Well Testing Steps
- •Test for Coliform bacteria and Nitrates annually.
- •Test for heavy metals, radon, and PFAS every 3 years.
- •Send samples to a state-certified drinking water laboratory recognized by California State Water Resources Control Board.
🛡 What Should You Do? — ZIP 94607 Recommendations
Your water quality is good
- ✓ Run cold water for 30 seconds each morning before use — especially if pipes are old
- ✓ Request your annual Consumer Confidence Report from East Bay Municipal Utility District
- ✓ If your home was built before 1986, consider testing your own tap for lead
- ✓ Use a pitcher filter (NSF/ANSI 42 certified) for improved taste
Recommended Taste & Safety Filter:
NSF/ANSI 53 Certified Pitcher Filter
Best for removing aesthetic chlorine, odors, and low-level heavy metals.
Frequently Asked Questions — ZIP 94607 Water Quality
Is tap water safe to drink in ZIP code 94607?+
How do I get my water tested in ZIP 94607 (Oakland, CA)?+
How hard is the tap water in 94607?+
Should I test private well water in 94607?+
What is the lead level in 94607 tap water?+
Is there an active boil water notice in 94607?+
Who provides tap water to 94607?+
What water filter should I use in 94607?+
Data Sources & Methodology
Water quality data for ZIP code 94607 is compiled from the EPA Safe Drinking Water Information System (SDWIS), EPA ECHO enforcement database, UCMR5 unregulated contaminant monitoring, and Consumer Confidence Reports filed by East Bay Municipal Utility District. Safety scores are composite metrics derived from violation history, lead levels, enforcement actions, and infrastructure risk indicators. Data reflects a 5-year monitoring window. Last dataset update: 2024. View EPA source data →