A
90

Excellent Water Quality

Hawaiian Gardens, CA 90716

Los Angeles County · Population served: 50,375 · Data updated March 2026

Water Systems Serving This Area

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GSWC - ARTESIA
Groundwater · Pop. 50,375
PWSID: CA1910004

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
0.7
15 ppb 1 ppb Passed

PFAS / Forever Chemicals

2 detected 1 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFOS13.0 ppt4 ppt4 pptExceeded
PFHxS3.4 ppt10 ppt10 pptBelow limit

Water Quality Summary

Understanding Your Water in Hawaiian Gardens

Tap water quality in Hawaiian Gardens, California (90716) receives an overall grade of A (Excellent) with a score of 90 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 9 points above the California state average of 81. Compared to the national average (75), this area performs significantly better. The area is served by Gswc - Artesia, a groundwater system providing water to approximately 50,375 people. Notably, 1 PFAS compound exceeds EPA limits — a significant concern given the persistent nature of these chemicals. The area has a clean violation record over the past 5 years — a positive indicator of consistent water quality management.

Your Score 90/100 A
vs State 9 pts above California avg (81)
vs National 15 pts above national avg (75)

What a Grade A Means

A score of 90/100 means the water supply in Hawaiian Gardens, CA meets or exceeds all EPA standards with minimal issues. Contaminant levels are well within safe limits, and the water system has maintained a strong compliance record. While no water supply is guaranteed perfect at the tap due to household plumbing, this is among the best-scoring areas in the country.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

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Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Based on EPA data, tap water in Hawaiian Gardens, California receives a grade of A (Excellent) with a score of 90/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.

ZIP code 90716 is served by 1 water system using groundwater sources, providing water to approximately 50,375 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead levels in Hawaiian Gardens, California are 0.7 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.

Yes — 2 PFAS compounds were detected in water serving Hawaiian Gardens, California, and 1 exceeds EPA maximum contaminant levels. PFAS are persistent chemicals linked to cancer, immune system effects, and developmental issues. A reverse osmosis or activated carbon filter certified for PFAS removal is recommended.

Water systems serving Hawaiian Gardens, California have zero violations in the last 5 years. This is a positive indicator of consistent regulatory compliance and water quality management.

Based on detected contaminants (PFAS), residents in Hawaiian Gardens, California should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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