Maricopa County, Arizona
199 ZIP codes · Avg score 66/100 · Grade C · Updated
ZipCheckup grade for Maricopa County: C.
A mixed picture - some signals here are worth your attention.
The systems supplying Maricopa County's 199 ZIP codes vary in performance - most meet minimum standards, but violations in select areas are on record.
How Maricopa County Compares
How Maricopa County Compares
Maricopa County scores 0 points above the Arizona state average (66/100) and 7 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: Maricopa County, Arizona
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.3 (asthma 10%, diabetes 10.6%)
Estimated additional annual cost per homeowner: $1,857, driven primarily by wildfire
39% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Maricopa County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 163 violations. Past 5 years: 235 total (235 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: $1,857
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,826,397 housing units in Maricopa 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 Maricopa County
Remediation costs are relatively manageable for most homeowners in Maricopa 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 Maricopa County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Maricopa County
8 community water systems serving Maricopa County.
- C
- D
- D
- D
- B
- D
Show all 8 water systems
- D
- C
63 total water systems serve Maricopa County.
Systems with the most violations in Maricopa County
5 water systems with recorded EPA violations.
- D
- D
- C
- D
- D
All ZIP Codes in Maricopa County
199 ZIP codes tracked in Maricopa County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 85363 | Youngtown | 75 | B | 0 | $283K |
| 2 | 85003 | Phoenix | 74 | B | 3 (1 health) | $578K |
| 3 | 85004 | Phoenix | 74 | B | 3 (1 health) | $366K |
| 4 | 85006 | Phoenix | 74 | B | 3 (1 health) | $377K |
| 5 | 85007 | Phoenix | 74 | B | 3 (1 health) | $447K |
| 6 | 85008 | Phoenix | 74 | B | 3 (1 health) | $324K |
| 7 | 85009 | Phoenix | 74 | B | 3 (1 health) | $215K |
| 8 | 85012 | Phoenix | 74 | B | 3 (1 health) | $701K |
| 9 | 85013 | Phoenix | 74 | B | 3 (1 health) | $476K |
| 10 | 85014 | Phoenix | 74 | B | 3 (1 health) | $448K |
| 11 | 85015 | Phoenix | 74 | B | 3 (1 health) | $313K |
| 12 | 85016 | Phoenix | 74 | B | 3 (1 health) | $508K |
| 13 | 85017 | Phoenix | 74 | B | 3 (1 health) | $243K |
| 14 | 85019 | Phoenix | 74 | B | 3 (1 health) | $256K |
| 15 | 85020 | Phoenix | 74 | B | 3 (1 health) | $401K |
| 16 | 85021 | Phoenix | 74 | B | 3 (1 health) | $433K |
| 17 | 85022 | Phoenix | 74 | B | 3 (1 health) | $386K |
| 18 | 85023 | Phoenix | 74 | B | 3 (1 health) | $359K |
| 19 | 85024 | Phoenix | 74 | B | 3 (1 health) | $430K |
| 20 | 85028 | Phoenix | 74 | B | 3 (1 health) | $583K |
| 21 | 85029 | Phoenix | 74 | B | 3 (1 health) | $308K |
| 22 | 85031 | Phoenix | 74 | B | 3 (1 health) | $240K |
| 23 | 85032 | Phoenix | 74 | B | 3 (1 health) | $388K |
| 24 | 85033 | Phoenix | 74 | B | 3 (1 health) | $246K |
| 25 | 85034 | Phoenix | 74 | B | 3 (1 health) | $397K |
| 26 | 85035 | Phoenix | 74 | B | 3 (1 health) | $244K |
| 27 | 85037 | Phoenix | 74 | B | 3 (1 health) | $291K |
| 28 | 85040 | Phoenix | 74 | B | 3 (1 health) | $295K |
| 29 | 85041 | Phoenix | 74 | B | 3 (1 health) | $310K |
| 30 | 85042 | Phoenix | 74 | B | 3 (1 health) | $353K |
| 31 | 85044 | Phoenix | 74 | B | 3 (1 health) | $437K |
| 32 | 85045 | Phoenix | 74 | B | 3 (1 health) | $591K |
| 33 | 85048 | Phoenix | 74 | B | 3 (1 health) | $539K |
| 34 | 85051 | Phoenix | 74 | B | 3 (1 health) | $288K |
| 35 | 85053 | Phoenix | 74 | B | 3 (1 health) | $330K |
| 36 | 85054 | Phoenix | 74 | B | 3 (1 health) | $618K |
| 37 | 85085 | Phoenix | 74 | B | 3 (1 health) | $589K |
| 38 | 85257 | Scottsdale | 74 | B | 5 | $453K |
| 39 | 85258 | Scottsdale | 74 | B | 5 | $745K |
| 40 | 85263 | Rio Verde | 74 | B | 3 | $776K |
| 41 | 85264 | Fort Mcdowell | 74 | B | 5 | $390K |
| 42 | 85339 | Laveen | 74 | B | 3 (1 health) | $398K |
| 43 | 85377 | Carefree | 74 | B | 7 | $1059K |
| 44 | 85018 | Phoenix | 73 | B | 8 (1 health) | $806K |
| 45 | 85050 | Phoenix | 73 | B | 8 (1 health) | $564K |
| 46 | 85250 | Scottsdale | 73 | B | 7 | $508K |
| 47 | 85254 | Scottsdale | 73 | B | 8 (1 health) | $702K |
| 48 | 85255 | Scottsdale | 73 | B | 8 (1 health) | $975K |
| 49 | 85260 | Scottsdale | 73 | B | 8 (1 health) | $637K |
| 50 | 85266 | Scottsdale | 73 | B | 10 (1 health) | $1027K |
| 51 | 85305 | Glendale | 73 | B | 6 (1 health) | $410K |
| 52 | 85306 | Glendale | 73 | B | 6 (1 health) | $342K |
| 53 | 85310 | Glendale | 73 | B | 6 (1 health) | $489K |
| 54 | 85331 | Cave Creek | 73 | B | 8 (1 health) | $674K |
| 55 | 85027 | Phoenix | 72 | B | 7 (4 health) | $316K |
| 56 | 85251 | Scottsdale | 72 | B | 10 (1 health) | $501K |
| 57 | 85259 | Scottsdale | 72 | B | 9 | $956K |
| 58 | 85262 | Scottsdale | 72 | B | 10 | $1179K |
| 59 | 85268 | Fountain Hills | 72 | B | 9 | $577K |
| 60 | 85086 | Phoenix | 71 | B | 10 (1 health) | $554K |
| 61 | 85087 | New River | 71 | B | 10 (1 health) | $511K |
| 62 | 85253 | Paradise Valley | 71 | B | 12 (1 health) | $2000K |
| 63 | 85337 | Gila Bend | 71 | B | 10 | $121K |
| 64 | 85351 | Sun City | 71 | B | 8 | $250K |
| 65 | 85375 | Sun City West | 71 | B | 12 | $351K |
| 66 | 85083 | Phoenix | 70 | B | 10 (2 health) | $573K |
| 67 | 85301 | Glendale | 70 | B | 11 | $218K |
| 68 | 85302 | Glendale | 70 | B | 11 | $327K |
| 69 | 85303 | Glendale | 70 | B | 11 | $287K |
| 70 | 85304 | Glendale | 69 | C | 14 (1 health) | $345K |
| 71 | 85308 | Glendale | 69 | C | 14 (1 health) | $420K |
| 72 | 85361 | Wittmann | 68 | C | 23 | $389K |
| 73 | 85373 | Sun City | 68 | C | 17 | $317K |
| 74 | 85043 | Phoenix | 66 | C | 12 (3 health) | $289K |
| 75 | 85201 | Mesa | 66 | C | 26 | $293K |
| 76 | 85202 | Mesa | 66 | C | 26 | $334K |
| 77 | 85203 | Mesa | 66 | C | 26 | $388K |
| 78 | 85204 | Mesa | 66 | C | 26 | $296K |
| 79 | 85205 | Mesa | 66 | C | 26 | $301K |
| 80 | 85207 | Mesa | 66 | C | 26 | $461K |
| 81 | 85208 | Mesa | 66 | C | 26 | $261K |
| 82 | 85210 | Mesa | 66 | C | 26 | $302K |
| 83 | 85213 | Mesa | 66 | C | 26 | $408K |
| 84 | 85215 | Mesa | 66 | C | 26 | $398K |
| 85 | 85379 | Surprise | 66 | C | 49 (2 health) | $414K |
| 86 | 85388 | Surprise | 66 | C | 47 (2 health) | $420K |
| 87 | 85390 | Wickenburg | 65 | C | 23 (2 health) | $466K |
| 88 | 85387 | Surprise | 61 | C | 64 (2 health) | $454K |
| 89 | 85335 | El Mirage | 59 | C | 65 (2 health) | $282K |
| 90 | 85374 | Surprise | 59 | C | 67 (2 health) | $356K |
| 91 | 85396 | Buckeye | 59 | C | 68 (2 health) | $451K |
| 92 | 85209 | Mesa | 58 | C | 200 | $364K |
| 93 | 85224 | Chandler | 58 | C | 77 | $391K |
| 94 | 85225 | Chandler | 58 | C | 83 | $387K |
| 95 | 85226 | Chandler | 58 | C | 77 | $452K |
| 96 | 85248 | Chandler | 58 | C | 94 (2 health) | $489K |
| 97 | 85249 | Chandler | 58 | C | 269 (4 health) | $611K |
| 98 | 85282 | Tempe | 58 | C | 0 | $370K |
| 99 | 85283 | Tempe | 58 | C | 0 | $410K |
| 100 | 85284 | Tempe | 58 | C | 0 | $646K |
| 101 | 85286 | Chandler | 58 | C | 83 | $549K |
| 102 | 85326 | Buckeye | 58 | C | 76 (2 health) | $342K |
| 103 | 85355 | Waddell | 58 | C | 71 (7 health) | $444K |
| 104 | 85378 | Surprise | 58 | C | 77 (2 health) | $235K |
| 105 | 85309 | Glendale Luke Afb | 57 | C | 5 | — |
| 106 | 85392 | Avondale | 56 | C | 7 (1 health) | $365K |
| 107 | 85353 | Tolleson | 55 | C | 12 (1 health) | $345K |
| 108 | 85307 | Glendale | 54 | D | 14 (2 health) | $369K |
| 109 | 85323 | Avondale | 54 | D | 41 | $335K |
| 110 | 85381 | Peoria | 54 | D | 11 | $408K |
| 111 | 85382 | Peoria | 52 | D | 15 | $408K |
| 112 | 85383 | Peoria | 49 | D | 24 (1 health) | $608K |
| 113 | 85281 | Tempe | 48 | D | 31 | $364K |
| 114 | 85338 | Goodyear | 48 | D | 57 (2 health) | $396K |
| 115 | 85345 | Peoria | 47 | D | 29 | $278K |
| 116 | 85395 | Goodyear | 44 | D | 91 (3 health) | $525K |
| 117 | 85142 | Queen Creek | 42 | D | 215 | $521K |
| 118 | 85206 | Mesa | 42 | D | 200 | $323K |
| 119 | 85212 | Mesa | 42 | D | 203 | $531K |
| 120 | 85233 | Gilbert | 42 | D | 174 | $469K |
| 121 | 85234 | Gilbert | 42 | D | 200 | $489K |
| 122 | 85236 | Higley | 42 | D | 174 | — |
| 123 | 85295 | Gilbert | 42 | D | 174 | $527K |
| 124 | 85296 | Gilbert | 42 | D | 182 (1 health) | $496K |
| 125 | 85297 | Gilbert | 42 | D | 174 | $559K |
| 126 | 85298 | Gilbert | 42 | D | 278 (4 health) | $598K |
| 127 | 85340 | Litchfield Park | 42 | D | 79 (7 health) | $500K |
| 128 | 85001 | Phoenix | — | — | — | |
| 129 | 85002 | Phoenix | — | — | — | |
| 130 | 85005 | Phoenix | — | — | — | |
| 131 | 85010 | Phoenix | — | — | — | |
| 132 | 85011 | Phoenix | — | — | — | |
| 133 | 85025 | Phoenix | — | — | — | |
| 134 | 85026 | Phoenix | — | — | 3 (1 health) | — |
| 135 | 85030 | Phoenix | — | — | — | |
| 136 | 85036 | Phoenix | — | — | — | |
| 137 | 85038 | Phoenix | — | — | — | |
| 138 | 85039 | Phoenix | — | — | — | |
| 139 | 85046 | Phoenix | — | — | — | |
| 140 | 85055 | Phoenix | — | — | — | |
| 141 | 85060 | Phoenix | — | — | — | |
| 142 | 85061 | Phoenix | — | — | — | |
| 143 | 85062 | Phoenix | — | — | — | |
| 144 | 85063 | Phoenix | — | — | — | |
| 145 | 85064 | Phoenix | — | — | — | |
| 146 | 85065 | Phoenix | — | — | — | |
| 147 | 85066 | Phoenix | — | — | — | |
| 148 | 85067 | Phoenix | — | — | — | |
| 149 | 85068 | Phoenix | — | — | — | |
| 150 | 85069 | Phoenix | — | — | — | |
| 151 | 85070 | Phoenix | — | — | — | |
| 152 | 85071 | Phoenix | — | — | — | |
| 153 | 85072 | Phoenix | — | — | — | |
| 154 | 85073 | Phoenix | — | — | — | |
| 155 | 85074 | Phoenix | — | — | — | |
| 156 | 85075 | Phoenix | — | — | — | |
| 157 | 85076 | Phoenix | — | — | — | |
| 158 | 85078 | Phoenix | — | — | — | |
| 159 | 85079 | Phoenix | — | — | — | |
| 160 | 85080 | Phoenix | — | — | — | |
| 161 | 85082 | Phoenix | — | — | — | |
| 162 | 85097 | Phoenix | — | — | — | |
| 163 | 85098 | Phoenix | — | — | — | |
| 164 | 85127 | Chandler Heights | — | — | — | |
| 165 | 85190 | Tortilla Flat | — | — | — | |
| 166 | 85211 | Mesa | — | — | — | |
| 167 | 85214 | Mesa | — | — | — | |
| 168 | 85216 | Mesa | — | — | — | |
| 169 | 85227 | Chandler Heights | — | — | — | |
| 170 | 85244 | Chandler | — | — | — | |
| 171 | 85252 | Scottsdale | — | — | — | |
| 172 | 85256 | Scottsdale | — | — | $132K | |
| 173 | 85261 | Scottsdale | — | — | — | |
| 174 | 85267 | Scottsdale | — | — | — | |
| 175 | 85269 | Fountain Hills | — | — | — | |
| 176 | 85271 | Scottsdale | — | — | — | |
| 177 | 85274 | Mesa | — | — | — | |
| 178 | 85275 | Mesa | — | — | — | |
| 179 | 85277 | Mesa | — | — | — | |
| 180 | 85280 | Tempe | — | — | — | |
| 181 | 85285 | Tempe | — | — | — | |
| 182 | 85287 | Tempe | — | — | — | |
| 183 | 85289 | Tempe | — | — | — | |
| 184 | 85299 | Gilbert | — | — | — | |
| 185 | 85311 | Glendale | — | — | — | |
| 186 | 85312 | Glendale | — | — | — | |
| 187 | 85318 | Glendale | — | — | — | |
| 188 | 85320 | Aguila | — | — | $398K | |
| 189 | 85322 | Arlington | — | — | $237K | |
| 190 | 85327 | Cave Creek | — | — | — | |
| 191 | 85329 | Cashion | — | — | 4 | $244K |
| 192 | 85342 | Morristown | — | — | 10 | $268K |
| 193 | 85343 | Palo Verde | — | — | $550K | |
| 194 | 85354 | Tonopah | — | — | 6 | $278K |
| 195 | 85358 | Wickenburg | — | — | — | |
| 196 | 85372 | Sun City | — | — | — | |
| 197 | 85376 | Sun City West | — | — | — | |
| 198 | 85380 | Peoria | — | — | — | |
| 199 | 85385 | Peoria | — | — | — |
Recommended Buyer Guides for Maricopa County
Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.
- Best Water Filters for PFAS — PFAS detected in 28 ZIP codes
- 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 Maricopa County, Arizona
Overview
Maricopa County in Arizona covers 199 tracked ZIP records with an average Home Safety Score of C (66/100) across 127 scored records.
127 of 131 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 25 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.