COUNTY REPORT AZ

Santa Cruz County, Arizona

8 ZIP codes · Avg score 71/100 · Grade B

ZipCheckup grade for Santa Cruz County: B.

This ZIP has a few items worth a quick check.

Santa Cruz County: A or B, 8 ZIP codes tracked.

How Santa Cruz County Compares

Santa Cruz County71/100
Arizona avg66/100
National avg73/100

How Santa Cruz County Compares

B
County Grade
71/100
Avg Safety Score
8
ZIP Codes
8
Water Systems

Santa Cruz County scores 5 points above the Arizona state average (66/100) and 2 points below the national average (73/100).

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData

B
County Grade
71
Avg Safety Score
8
ZIP Codes
Best ZIP: 85624 (82/100)
Lowest ZIP: 85648 (63/100)
$327K
Median Home Value
$400
Avg Remediation (0.12% of home value)

ZIP Code Risk Map

Water Quality Map: Santa Cruz County, Arizona

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

A B C D F

Key Risk Factors

Health risk index: 12.8 (asthma 9.4%, diabetes 15.5%)

Modeled additional annual cost estimate per homeowner: $1,786, largest modeled factor: Wildfire

38% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 9.4% (national: 8.9%)
Diabetes 15.5% (national: 10.5%)
Obesity 34.2% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1987
Median Build Year
38%
Pre-1980 Housing
42/100
Infrastructure Stress Indicator
75%
ZIPs with High Infrastructure Stress
Low
Lead Pipe Risk

Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $1,786

Wildfire $1,200/yr
Flood $667/yr
Energy Code Gap $90/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

18,498 housing units in Santa Cruz County

Pre-1940 4%
1940–1959 7%
1960–1979 27%
1980–1999 36%
2000+ 26%

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 Santa Cruz County

$327K
Median Home Value
$400
Est. Remediation Cost
0.1%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Santa Cruz County can be compared with the median property value; actual costs vary by property.

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 Santa Cruz County residents

Asthma 9.4% (US avg: 8.9%)
Diabetes 15.5% (US avg: 11%)
Obesity 34.2% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Santa Cruz County ZIP codes

8 community water systems mapped to Santa Cruz County ZIP codes; EPA may list more systems serving the county.

Show all 8 water systems

Systems with the most violations in Santa Cruz County

5 water systems with violations in EPA records.

All ZIP Codes in Santa Cruz County

8 ZIP codes tracked in Santa Cruz County.

# ZIP Code City Safety Score Grade Violations Home Value
1 85624 Patagonia 82 B 4 $378K
2 85621 Nogales 67 C 73 (2 health) $174K
3 85648 Rio Rico 63 C 11 $213K
4 85611 Elgin — — 21 (1 health) $327K
5 85628 Nogales — — —
6 85640 Tumacacori — — 11 —
7 85646 Tubac — — 11 $473K
8 85662 Nogales — — —

Recommended Buyer Guides for Santa Cruz County

Each guide below is listed with the reason it appears.

Overview

Santa Cruz County in Arizona covers 8 tracked ZIP records with an average Home Safety Score of B (71/100) across 3 scored records.

6 of 6 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 Arizona Home Safety Profile

Data Sources

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

Frequently Asked Questions

Is water safe in Santa Cruz County?
Santa Cruz County receives an average Home Safety grade of B from its scored ZIP records (8 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Santa Cruz County?
We map 8 public water systems to 8 ZIP codes in our data for Santa Cruz County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Santa Cruz County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Santa Cruz County is wildfire. Across all modeled risk factors, the estimated average additional annual cost is $1,786 per homeowner; actual costs vary by home.
How old are homes in Santa Cruz County?
The median home build year in Santa Cruz County is 1987. 38% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.
How does Santa Cruz County compare to Arizona?
Santa Cruz County has an average Home Safety Score of 71/100 under model 4.0.0, which is at or above the Arizona state average of 66/100.

How to cite this page

APA ZipCheckup. (2026). Santa Cruz County, AZ: HSS 71/100; PFAS Found in Water. https://zipcheckup.com/county/arizona/santa-cruz/
BibTeX
@misc{zipcheckup-county-arizona-santa-cruz,
  author = {{ZipCheckup}},
  title  = {{Santa Cruz County, AZ: HSS 71/100; PFAS Found in Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/arizona/santa-cruz/}
}

Page version: October 2026.

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