Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03

Lake Elsinore in CA has never appeared on an EPA enforcement list — zero violations, zero monitoring failures, zero health-based citations across all 1 public water system across all available federal records.

Water Quality by ZIP Code in Lake Elsinore

Water quality varies across Lake Elsinore's 3 ZIP codes. Check your specific ZIP for detailed contaminant data.

ZIP Code	Grade	Score	Violations	Health
92530	B	73	0	0	View report →
92531	B	78	0	0	View report →
92532	B	83	0	0	View report →

Water Quality Overview

Lake Elsinore, California receives a water quality grade of B with an overall score of 78 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).

No EPA violations have been recorded for the 1 water system serving Lake Elsinore. This is a positive indicator, though it does not guarantee the absence of all contaminants — some substances (like PFAS) are not yet fully regulated.

What Grade B Means

A grade of B indicates good compliance with EPA drinking water standards. While not perfect, Lake Elsinore's water systems meet the vast majority of federal requirements. Minor violations may exist but typically relate to monitoring or reporting rather than health-based standards.

Lead Levels

The average 90th percentile lead level across Lake Elsinore water systems is 0.0016 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.

Radon Risk

Lake Elsinore is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.

Water Systems Serving Lake Elsinore

Lake Elsinore is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 169,455 people across 3 ZIP codes.

Each water system is identified by a Public Water System ID (PWSID) and is required to:

• Test for over 90 regulated contaminants on a regular schedule
• Report results to the EPA and state regulators
• Issue an annual Consumer Confidence Report (CCR) to all customers
• Take corrective action when violations occur

How to Check Your Water in Lake Elsinore

1. Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores

2. Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants

3. Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel

4. Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics

5. Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts

Lake Elsinore vs. Nearby California Cities

How Lake Elsinore's water quality compares to similar cities in California:

Recommended Water Filters for Lake Elsinore

Based on contaminants detected in Lake Elsinore's water supply, these filter types are recommended:

Reverse Osmosis (under-sink)

• Removes: Combined Uranium
• Effectiveness: 90-99%
• Cost range: $150–$500
• Certification: NSF/ANSI 58
• Recommended products:
  • Waterdrop G3P800
  • iSpring RCC7AK

Water Quality by ZIP Code in Lake Elsinore

Water quality varies across Lake Elsinore's ZIP codes. The table below shows the worst-scoring and best-scoring areas:

Common Questions About Lake Elsinore Water

These are the most common questions residents search for about water quality in Lake Elsinore, California:

Is Lake Elsinore water hard or soft? Water hardness varies by source. Lake Elsinore's 1 water system uses a single source. Check your ZIP code report for specific hardness data.

Can I drink Lake Elsinore tap water? Lake Elsinore's water receives a grade of B (78/100). No health-based violations have been recorded, but home testing is always recommended.

What is the best water filter for Lake Elsinore? Based on detected contaminants, a reverse osmosis (under-sink) filter is most recommended. See our Water Filter Matcher for personalized recommendations.

Lake Elsinore vs. California Average

Understanding how Lake Elsinore compares to the broader California average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.

To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Lake Elsinore.

ZIP Codes in Lake Elsinore

Lake Elsinore spans 3 ZIP codes. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Lead/copper: EPA Lead and Copper Rule sampling data
• Radon: EPA Map of Radon Zones
• Enforcement: EPA ECHO database
• Filter recommendations: NSF/ANSI certified products

Updated daily.

Your Water is Safe — Here's How to Keep It That Way

Grade B is excellent news. Here's what proactive homeowners do to maintain water quality:

Annual Water Testing

EPA recommends annual testing even with clean water. Home test kits: $20-$50. Catches changes before they become problems.

Maintenance Filtration

A basic carbon filter removes chlorine taste and catches emerging contaminants like PFAS that aren't yet fully regulated.

Plumbing Check

Even safe city water picks up lead from home pipes. If your home was built before 1986, a one-time pipe inspection is recommended.