CITY REPORT CA

Thermal, CA: 3 Violations - Home Safety 91/100

1 ZIP code · 3 water systems · Updated

ZipCheckup grade for Thermal: A.

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

Across Thermal, CA, the overall grade falls in the upper range - a summary score, not a measurement taken at any single tap.

How Thermal Compares

Thermal91/100
California avg76/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
3
Water Systems
1
ZIPs Linked to Systems with Violations
A · 91
Avg Safety Score
Zone 2
County Radon Potential (Moderate)
$140K
Median Home Value

Thermal Water: The Quick Version

  • Your city's water systems recorded 3 violations since 2021.
  • Homes built before 1986: 38% - older plumbing may contain lead solder.
  • Health risk index (ZipCheckup composite of CDC data): 12.34.

Water Systems Serving Thermal

Because each listed system has its own federal record, violations at one of the 3 shown below do not apply to the others among the 3 tied to Thermal, CA.

Overview

We track home safety data for 1 ZIP code in Thermal, California (population ~17,909), covering 3 community water systems serving approximately 398,347 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.

Home Safety Score

Average Home Safety Score for Thermal: A (91/100)

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

Thermal water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: reported as 0 mg/L (a reported 0 is not proof of no lead; check the source record for its reporting limit) (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 2.

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
Nitrate Inorganic 2 1
E. coli Microbiological 2 1
Revised Total Coliform Rule Microbiological 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
92274 A 3 0 Coachella Vwd: Cove Community

All ZIP Codes in Thermal

  • 92274 [A] - 3 violations

Data Sources

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

CDC Health Data for Thermal

9.2%
Asthma (US: 9.8%)
15%
Diabetes (US: 10.4%)
18%
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 9.2% ↓
Diabetes 15% ↑
Mental Health 18% ↑

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

Key Contaminants Detected in Thermal

Nitrate 2 violations
Inorganic · EPA regulatory level for the contaminant named above: 10 mg/L
Blue baby syndrome in infants
E. coli 2 violations
Microbiological
Gastrointestinal illness, potentially fatal
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 Thermal's Housing Stock?

1998
Median Build Year
38%
Built Before 1986
10%
Built Before 1970
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

Plumbing materials follow installation dates, not medians. Thermal records a median build year of 1998, and a meaningful share of its homes date from before the 1986 federal lead restrictions.

1998
Median Year Built
38%
Pre-1986 (lead solder era; lead paint banned 1978)
10%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (10%) 1970–1986 (28%) Post-1986 (62%)

Most homes in Thermal 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.

Protecting Children from Lead in Thermal

38%
Homes Built Before 1986

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 Thermal

33
Total FEMA Flood Claims
$9,050
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Thermal contains 33 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $9,050. Among ZIP codes with claim records, 100% 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.

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.

Frequently Asked Questions

What does the Home Safety Score mean for Thermal, CA?
Thermal has an average Home Safety Score of 91/100 (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. 3 violations appear 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 Thermal?
EPA records list 3 EPA violations for Thermal water systems. These water-system violations are shown for 1 mapped ZIP code.
How does Thermal compare to California average?
Thermal has an average Home Safety Score of 91/100, which is at or above the California state average of 76/100 for the same model series.
How many water systems serve Thermal?
Our records map 3 water systems to 1 ZIP code in Thermal. The related population figure in our data is approximately 17,909 people; it is not a count of people served citywide.
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How to cite this page

APA ZipCheckup. (2026). Thermal, CA: 3 Violations - Home Safety 91/100. https://zipcheckup.com/cities/ca/thermal/
BibTeX
@misc{zipcheckup-cities-ca-thermal,
  author = {{ZipCheckup}},
  title  = {{Thermal, CA: 3 Violations - Home Safety 91/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ca/thermal/}
}

Page version: October 2026.

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