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Official EPA SDWIS Verified ReportWater Quality & Testing GuideHistorical Record: No Recorded SDWIS Violations

ZIP Code 92842 Water Quality & Testing Report

Garden Grove, CA ยท Orange County County ยท Updated for 2026

Public Health & Medical Notice: Drinking water quality data on this page reflects historical compliance records submitted under the Safe Drinking Water Act. This information does not constitute medical advice or a real-time safety guarantee. If you are pregnant, nursing, preparing infant formula, or immunocompromised, consult a healthcare provider. Boiling water kills biological pathogens, but does NOT remove chemical contaminants like lead, arsenic, or PFAS.
Quick EPA Verified Answer

Is Tap Water Safe to Drink in ZIP 92842 (Garden Grove, CA)?

Yes, tap water in ZIP code 92842 (Garden Grove, CA) is safe to drink under EPA Safe Drinking Water Act standards. Supplied by City of Garden Grove, the area earns an EPA Safety Grade of A (95/100) with 0 health violations, 1.9 ppb lead, and hard (130 mg/L / 7.6 GPG) water.

Safety Score
A

Water Safety Grade

Excellent โ€” Meets all EPA standards

Health Violations

0

Total Violations

0

Lead Risk

N/A

Contaminants

0

About Tap Water in ZIP Code 92842

Tap water in ZIP code 92842 (Garden Grove, CA) is distributed by City of Garden Grove (EPA ID: CA3010062), serving approximately 174,226 residents. Based on EPA Safe Drinking Water Act compliance records, this system receives a water safety grade of A with a composite quality score of 95/100.

Water System

City of Garden Grove

EPA ID: CA3010062

Water Source

Surface Water

Population Served

174,226 residents

County

Orange County County, California

๐Ÿงช

Lead Levels in ZIP 92842

EPA action level: 15 ppb | Public health goal: 0 ppb

Lead Level: 1.9 ppb โ€” Very Low

The 90th percentile lead level in 92842 is 1.9 ppb. This meets the EPA action level of 15 ppb. Health experts recommend a target of 0 ppb for optimal safety.
Lead Level (90th percentile)
1.90 ppb (0.0019 mg/L)
Copper (Consumer Confidence Report)

From annual CCR filing

0.1 ppb
Lead Exposure Risk Rating
Unknown
Note: Lead levels above are the 90th percentile from EPA monitoring โ€” meaning 90% of samples were at or below this level. Even "undetected" tap water lead doesn't account for lead leaching from home plumbing. If your home was built before 1986, individual tap testing is recommended.
๐Ÿชจ

Water Hardness & Mineral Content

Grains per gallon (GPG) & Parts per million (PPM / mg/L)

Classification: Hard7.6 GPG ยท 130 mg/L

Water in ZIP 92842 is Hard (130 mg/L / 7.6 GPG). Residents may notice white mineral spots on glassware, reduced soap efficiency, and mineral scale on faucets and showerheads.

Recommendation: An ion-exchange water softener or descaler is recommended to prolong the life of water heaters, dishwashers, and plumbing.
Hardness (GPG)

Grains per gallon

7.6 GPG
Hardness (PPM / mg/L)

Parts per million CaCO3

130 mg/L
Appliance Scaling Risk
High / Severe

Official EPA SDWIS Database Entry

Utility: City of Garden Grove ยท PWSID: CA3010062

Verify on EPA.gov
๐Ÿ“‹

Violation History

Past 5 years โ€” EPA SDWIS data

City of Garden Grove has recorded zero violations in the EPA compliance database over the past 5 years.

Total Violations (5 yr)
0
Health-Based Violations
0
Unresolved Violations
0
Boil Water Advisories
0
Compliance Risk
Low

Regulatory compliance risk for this utility is rated Low based on past reporting and enforcement records.

โš—๏ธ

Contaminants Detected

Contaminants with health-based violations on record

No health-based contaminant violations are on record for ZIP code 92842 under the Safe Drinking Water Act.

From Consumer Confidence Report:

Specific Conductance (808 ฮผmho/cm); Total Dissolved Solids (505 ppm); Perfluoro hexane sulfonic acid (6 ppt); Perfluoro octane sulfonic acid (9.9 ppt); Perfluoro octanoic acid (4.4 ppt)

๐ŸŒŠ

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.

Water Source Type
Surface Water
CCR Source Classification
Groundwater from 12 wells in Orange County groundwater basin + imported surface water from MWDSC (State Water Project and Colorado River)
EPA Radon Zone

Lower potential

Zone 3

EPA Radon Zone 3 โ€” lower radon potential, though the EPA still recommends testing all homes.

Water Quality Testing in ZIP 92842

Tap Water & Well Testing Recommendations

Residents in ZIP code 92842 served by City of Garden Grove 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

  • โ€ขTest for Coliform bacteria and Nitrates annually.
  • โ€ขTest for heavy metals, radon, and PFAS every 3 years.
  • โ€ขSend samples to a state-certified drinking water laboratory recognized by California State Water Resources Control Board.
Certified Lab Testing: Always use an EPA-certified drinking water laboratory in CA for formal legal or real estate compliance testing.

๐Ÿ›ก What Should You Do? โ€” ZIP 92842 Recommendations

  • โœ“ Run cold water for 30 seconds each morning before use โ€” especially if pipes are old
  • โœ“ Request your annual Consumer Confidence Report from City of Garden Grove
  • โœ“ If your home was built before 1986, consider testing your own tap for lead
  • โœ“ Use a pitcher filter (NSF/ANSI 42 certified) for improved taste

Recommended Taste & Safety Filter:

๐Ÿšฐ

NSF/ANSI 53 Certified Pitcher Filter

Best for removing aesthetic chlorine, odors, and low-level heavy metals.

Filter Selection Guide โ†’

Frequently Asked Questions โ€” ZIP 92842 Water Quality

Is tap water safe to drink in ZIP code 92842?+
Yes โ€” tap water in 92842 (Garden Grove, CA) meets EPA standards with a water safety grade of A. No health-based violations are on record in the past 5 years.
How do I get my water tested in ZIP 92842 (Garden Grove, CA)?+
To test water quality in ZIP 92842, you can order a certified drinking water test kit or send water samples to an EPA/NELAP certified laboratory in CA. Certified testing checks for lead, coliform bacteria, nitrates, hardness, and PFAS that standard test strips miss. Contact California State Water Resources Control Board for a list of certified regional labs.
How hard is the tap water in 92842?+
Tap water in 92842 is classified as Hard with an estimated mineral hardness of 130 mg/L (7.6 GPG). An ion-exchange water softener or descaler is recommended to prolong the life of water heaters, dishwashers, and plumbing.
Should I test private well water in 92842?+
Yes. Unlike municipal systems, private wells in 92842 are not regulated by the EPA or local utilities. Private well owners should test their water annually for coliform bacteria and nitrates, and every 3 to 5 years for heavy metals (lead, arsenic) and volatile organic compounds.
What is the lead level in 92842 tap water?+
The 90th percentile lead level in 92842 is 1.9 ppb. The EPA action level is 15 ppb. This is below the EPA action level.
Is there an active boil water notice in 92842?+
There are currently no active boil water advisories on record for 92842. Water treatment systems are operating within normal parameters.
Who provides tap water to 92842?+
Tap water in ZIP code 92842 is provided by City of Garden Grove (EPA ID: CA3010062), serving approximately 174,226 residents.
What water filter should I use in 92842?+
Based on water metrics for 92842, we recommend None / Standard Pitcher. Look for certifications such as NSF/ANSI 42 (Chlorine, Taste & Odor).

Data Sources & Methodology

Water quality data for ZIP code 92842 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 City of Garden Grove. 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 โ†’