Pima County, Arizona
74 ZIP codes · Avg score 64/100 · Grade C · Updated
ZipCheckup grade for Pima County: C.
A mixed picture - some signals here are worth your attention.
Pima County shows moderate water quality across its 74 ZIP codes - some areas carry violations worth monitoring.
How Pima County Compares
How Pima County Compares
Pima County scores 2 points below the Arizona state average (66/100) and 9 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 Last verified:
ZIP Code Risk Map
Water Quality Map: Pima County, Arizona
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.2 (asthma 10.9%, diabetes 11%)
Estimated additional annual cost per homeowner: $2,948, driven primarily by wildfire
48.5% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Pima County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 45 violations. Past 5 years: 53 total (53 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: $2,948
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
477,933 housing units in Pima 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 Pima County
Remediation costs are relatively manageable for most homeowners in Pima 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 Pima County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Pima County
8 community water systems serving Pima County.
- C
- D
- C
- C
- C
- C
Show all 8 water systems
- B
65 total water systems serve Pima County.
Systems with the most violations in Pima County
5 water systems with recorded EPA violations.
- D
- C
- D
- C
- C
All ZIP Codes in Pima County
74 ZIP codes tracked in Pima County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 85321 | Ajo | 74 | B | 1 | $121K |
| 2 | 85701 | Tucson | 73 | B | 33 | $452K |
| 3 | 85711 | Tucson | 73 | B | 33 | $249K |
| 4 | 85713 | Tucson | 73 | B | 33 | $172K |
| 5 | 85735 | Tucson | 73 | B | 33 | $191K |
| 6 | 85746 | Tucson | 73 | B | 33 | $225K |
| 7 | 85748 | Tucson | 73 | B | 33 | $322K |
| 8 | 85749 | Tucson | 73 | B | 33 | $554K |
| 9 | 85622 | Green Valley | 71 | B | 9 | $325K |
| 10 | 85707 | Tucson | 71 | B | 12 | — |
| 11 | 85714 | Tucson | 71 | B | 37 | $177K |
| 12 | 85715 | Tucson | 71 | B | 39 | $331K |
| 13 | 85716 | Tucson | 71 | B | 37 | $301K |
| 14 | 85739 | Tucson | 71 | B | 12 | $394K |
| 15 | 85750 | Tucson | 71 | B | 39 | $518K |
| 16 | 85710 | Tucson | 70 | B | 35 (1 health) | $246K |
| 17 | 85712 | Tucson | 70 | B | 36 (1 health) | $250K |
| 18 | 85736 | Tucson | 70 | B | 42 | $140K |
| 19 | 85719 | Tucson | 69 | C | 45 | $267K |
| 20 | 85755 | Tucson | 69 | C | 41 | $453K |
| 21 | 85757 | Tucson | 69 | C | 43 | $266K |
| 22 | 85706 | Tucson | 68 | C | 42 (1 health) | $170K |
| 23 | 85747 | Tucson | 66 | C | 47 (1 health) | $346K |
| 24 | 85756 | Tucson | 60 | C | 71 (3 health) | $211K |
| 25 | 85730 | Tucson | 59 | C | 62 (1 health) | $219K |
| 26 | 85629 | Sahuarita | 58 | C | 47 (1 health) | $314K |
| 27 | 85641 | Vail | 58 | C | 69 (17 health) | $373K |
| 28 | 85704 | Tucson | 58 | C | 129 (1 health) | $389K |
| 29 | 85718 | Tucson | 58 | C | 100 | $677K |
| 30 | 85737 | Tucson | 58 | C | 76 | $434K |
| 31 | 85745 | Tucson | 58 | C | 96 (1 health) | $324K |
| 32 | 85658 | Marana | 55 | C | 36 | $442K |
| 33 | 85743 | Tucson | 52 | D | 44 | $329K |
| 34 | 85614 | Green Valley | 50 | D | 22 | $273K |
| 35 | 85653 | Marana | 42 | D | 103 (6 health) | $298K |
| 36 | 85705 | Tucson | 42 | D | 109 (2 health) | $114K |
| 37 | 85741 | Tucson | 42 | D | 109 (2 health) | $269K |
| 38 | 85742 | Tucson | 42 | D | 101 | $339K |
| 39 | 85246 | Chandler | — | — | — | |
| 40 | 85341 | Lukeville | — | — | 1 | — |
| 41 | 85535 | Eden | — | — | — | |
| 42 | 85601 | Arivaca | — | — | $79K | |
| 43 | 85619 | Mount Lemmon | — | — | 18 | — |
| 44 | 85633 | Sasabe | — | — | — | |
| 45 | 85634 | Sells | — | — | $94K | |
| 46 | 85637 | Sonoita | — | — | 0 | $434K |
| 47 | 85639 | Topawa | — | — | $106K | |
| 48 | 85645 | Amado | — | — | 14 | $220K |
| 49 | 85652 | Cortaro | — | — | — | |
| 50 | 85654 | Rillito | — | — | 2 | — |
| 51 | 85702 | Tucson | — | — | — | |
| 52 | 85703 | Tucson | — | — | — | |
| 53 | 85708 | Tucson | — | — | 12 | — |
| 54 | 85709 | Tucson | — | — | 33 | — |
| 55 | 85717 | Tucson | — | — | — | |
| 56 | 85720 | Tucson | — | — | — | |
| 57 | 85721 | Tucson | — | — | — | |
| 58 | 85722 | Tucson | — | — | — | |
| 59 | 85723 | Tucson | — | — | 33 | — |
| 60 | 85724 | Tucson | — | — | 33 | — |
| 61 | 85725 | Tucson | — | — | — | |
| 62 | 85726 | Tucson | — | — | 33 | — |
| 63 | 85728 | Tucson | — | — | — | |
| 64 | 85731 | Tucson | — | — | — | |
| 65 | 85732 | Tucson | — | — | — | |
| 66 | 85733 | Tucson | — | — | — | |
| 67 | 85734 | Tucson | — | — | 2 (1 health) | — |
| 68 | 85738 | Catalina | — | — | — | |
| 69 | 85740 | Tucson | — | — | — | |
| 70 | 85744 | Tucson | — | — | — | |
| 71 | 85751 | Tucson | — | — | — | |
| 72 | 85752 | Tucson | — | — | — | |
| 73 | 85754 | Tucson | — | — | — | |
| 74 | 85775 | Tucson | — | — | — |
Recommended Buyer Guides for Pima 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 Water Filters for PFAS — PFAS detected in 36 ZIP codes
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Pima County, Arizona
Overview
Pima County in Arizona covers 74 tracked ZIP records with an average Home Safety Score of C (64/100) across 38 scored records.
48 of 49 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 36 health-based violations appear in the available health breakdown.
← Back to Arizona 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.