CITY REPORT CA HEALTH VIOLATIONS: 1

Chula Vista, CA: 1 Health Violation - Home Safety 85/100

8 ZIP codes · 3 water systems · Updated

ZipCheckup grade for Chula Vista: A.

Checked records flag no major concern; missing data is unknown.

Chula Vista, CA carries a grade in ZipCheckup's upper tier; any health-based violations on record should be checked per water system.

How Chula Vista Compares

Chula Vista85/100
California avg76/100
National avg73/100

Data: EPA SDWIS

8
ZIP Codes
3
Water Systems
1
ZIPs Linked to Systems with Violations
A · 85
Avg Safety Score
Zone 3
County Radon Potential (Low)
$720K
Median Home Value
$750
Est. Remediation (0.1% of home value)

Water Quality Map: Chula Vista, CA

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Score Distribution

Distribution of Home Safety grades across Chula Vista.

A
3
B
2
C
0
D
0
F
0

Chula Vista Water: The Quick Version

  • Water systems mapped to your city have 1 violation on record since 2021.
  • Average of reported 90th-percentile lead results: 0.0004 mg/L.
  • Homes built before 1986: 35% - older plumbing may contain lead solder.
  • Estimated remediation: $750 per household.
  • Health risk index (ZipCheckup composite of CDC data): 10.18.

Water Systems Serving Chula Vista

Counting every public water system linked to Chula Vista, CA in federal data gives 3. The list below keeps the 3 largest by reported population served, a figure that covers each system's whole service area rather than the city alone. A household's own supplier is named on its water bill.

Overview

We track home safety data for 8 ZIP codes in Chula Vista, California (population ~272,064), covering 3 community water systems serving approximately 535,290 people region-wide. The EPA snapshots used for this build directly map water systems to 5 of 8 ZIP codes.

1 of 5 ZIP codes with a reported violation count in the available EPA record (20%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for Chula Vista: A (85/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor What It Measures
Water Quality EPA violations and compliance history
PFAS MCL Screen UCMR 5 testing against the covered federal MCLs
Radon Risk EPA radon zone classification
Annual AQI EPA AirData county-year median with at least 90 observed days

Water Sources

Chula Vista water systems draw from: Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0004 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 5 ZIP codes with known status exceed the EPA lead action level

Radon Risk

8 of 8 ZIP records with known zones are in EPA Radon Zone 3.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Revised Total Coliform Rule Microbiological 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
91911 B 1 1 Sweetwater Authority

Areas with No Violations

ZIP Code Safety Score System Population
91910 B Sweetwater Authority 191,282
91913 A Otay Water District 238,008
91914 A Otay Water District 238,008
91915 A Otay Water District 238,008

All ZIP Codes in Chula Vista

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

CDC Health Data for Chula Vista

8.9%
Asthma (US: 9.8%)
10%
Diabetes (US: 10.4%)
16.3%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 8.9% ↓
Diabetes 10% ↓
Mental Health 16.3% ↑

Vertical line = national average. ■ Above national · ■ Below national

Key Contaminants Detected in Chula Vista

Revised Total Coliform Rule 2 violations
Microbiological
Indicates possible bacterial contamination

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

How Old Is Chula Vista's Housing Stock?

1994
Median Build Year
35%
Built Before 1986
20%
Built Before 1970
PEX or Copper
Likely Pipe Material

Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Lead solder was allowed in new plumbing until the 1986 federal restrictions, which is why older homes in Chula Vista deserve a closer look; the median build year is 1994.

1994
Median Year Built
35%
Pre-1986 (lead solder era; lead paint banned 1978)
20%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (20%) 1970–1986 (15%) Post-1986 (65%)

Most homes in Chula Vista were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Chula Vista: Remediation Cost in Perspective

In Chula Vista, estimated remediation comes to 1% or less of the median home value.

Median Home Value
$719,600
Est. Remediation
$750
Remediation as % of home value 0.1%

Estimated remediation costs in Chula Vista can be compared with local home values. The $475–$1,100 estimated range can be set against the median property value; actual costs vary by home. Home values are 3% below the California average.

Protecting Children from Lead in Chula Vista

35%
Homes Built Before 1986
0.0004
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Historical Flood-Claim Evidence for Chula Vista

25
Total FEMA Flood Claims
$12,462
Avg Reported Sum With Payment Data
33%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Chula Vista contains 25 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $12,462. Among ZIP codes with claim records, 33% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $750 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

Deep Dive Reports

Detailed analysis for Chula Vista, CA

Frequently Asked Questions

What does the Home Safety Score mean for Chula Vista, CA?
Chula Vista has an average Home Safety Score of 85/100 (Grade A) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 1 violation appears in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Chula Vista?
EPA records list 1 EPA violation, including 1 health-based violation for Chula Vista water systems. These water-system violations are shown for 8 mapped ZIP codes.
Does Chula Vista water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Chula Vista is 0.0004 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Chula Vista compare to California average?
Chula Vista has an average Home Safety Score of 85/100, which is at or above the California state average of 76/100 for the same model series.
How many water systems serve Chula Vista?
Our records map 3 water systems to 8 ZIP codes in Chula Vista. The related population figure in our data is approximately 272,064 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Chula Vista?
Estimated remediation cost per household in Chula Vista: $750; modeled range $475 to $1,100. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Chula Vista, CA: 1 Health Violation - Home Safety 85/100. https://zipcheckup.com/cities/ca/chula-vista/
BibTeX 
@misc{zipcheckup-cities-ca-chula-vista,
  author = {{ZipCheckup}},
  title  = {{Chula Vista, CA: 1 Health Violation - Home Safety 85/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ca/chula-vista/}
}

Page version: October 2026.

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