Imperial County, California
18 ZIP codes · Avg score 88/100 · Grade A · Updated
ZipCheckup grade for Imperial County: A.
No federal data flags a major home-safety concern for this ZIP.
Throughout Imperial County, the 18 monitored ZIP codes show low violation rates and healthy safety scores - a pattern that puts the county well above the state baseline for drinking water quality.
How Imperial County Compares
How Imperial County Compares
Imperial County scores 12 points above the California state average (76/100) and 15 points above the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Imperial County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.3 (asthma 9.2%, diabetes 15%)
Estimated additional annual cost per homeowner: $1,183, driven primarily by flood
46.7% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
↑ Worsening trendEPA violation counts by year across Imperial County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 17 violations. Past 5 years: 25 total (25 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,183
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
61,523 housing units in Imperial County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Imperial County
Remediation costs are relatively manageable for most homeowners in Imperial County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Imperial County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Imperial County
8 community water systems serving Imperial County.
- A
- A
- B
- A
- A
- A
Show all 8 water systems
- B
- A
12 total water systems serve Imperial County.
Systems with the most violations in Imperial County
5 water systems with recorded EPA violations.
- B
- B
- A
- A
- A
All ZIP Codes in Imperial County
18 ZIP codes tracked in Imperial County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 92233 | Calipatria | 92 | A | 0 | $177K |
| 2 | 92257 | Niland | 92 | A | 0 | $113K |
| 3 | 92274 | Thermal | 91 | A | 3 | $140K |
| 4 | 92231 | Calexico | 88 | A | 2 (1 health) | $282K |
| 5 | 92250 | Holtville | 88 | A | 2 (1 health) | $279K |
| 6 | 92227 | Brawley | 87 | A | 4 (1 health) | $272K |
| 7 | 92249 | Heber | 87 | A | 3 (1 health) | $284K |
| 8 | 92243 | El Centro | 83 | B | 6 (2 health) | $286K |
| 9 | 92251 | Imperial | 83 | B | 7 (2 health) | $350K |
| 10 | 92222 | Bard | — | — | — | |
| 11 | 92232 | Calexico | — | — | — | |
| 12 | 92244 | El Centro | — | — | — | |
| 13 | 92259 | Ocotillo | — | — | $159K | |
| 14 | 92266 | Palo Verde | — | — | — | |
| 15 | 92273 | Seeley | — | — | 4 (1 health) | $191K |
| 16 | 92275 | Salton City | — | — | $140K | |
| 17 | 92281 | Westmorland | — | — | $222K | |
| 18 | 92283 | Winterhaven | — | — | $91K |
Recommended Buyer Guides for Imperial County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Imperial County, California
Overview
Imperial County in California covers 18 tracked ZIP records with an average Home Safety Score of A (88/100) across 9 scored records.
8 of 10 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 3 health-based violations appear in the available health breakdown.
← Back to California Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.