STATE REPORT AZ 4074 HEALTH VIOLATIONS

Arizona Water: 29.7K Violations — 553 ZIPs

553 ZIP codes · 439 water systems · UPC plumbing code · Updated 2026-06-03

Data: EPA SDWIS, NWS, State plumbing boards, Rewiring America Last verified: 2026-06-03

553
ZIP Codes
439
Water Systems
461
ZIPs with Violations
UPC
Plumbing Code
C · 64
Avg Safety Score
5
ZIPs Exceeding Lead Limit
#30
of 51 States
40%
ZIPs Rated A or B
83%
ZIPs with Violations
C
Arizona average: 64/100 — ranked #30 of 51 states. 3 points below the national average (67). 83% of ZIP codes have recorded violations.

Arizona water systems post below-average compliance metrics across multiple counties.

Score Distribution

How Arizona's 553 ZIP codes are distributed across safety grades.

0
A
221
B
144
C
182
D
6
F
85-10070-8455-6940-540-39

Home Safety Scores by State

Loading map…
F (0-49) D (50-64) C (65-74) B (75-84) A (85+)

Data: EPA SDWIS, FEMA NFIP, EPA Radon, USGS Earthquake Hazards, NIFC Wildfire • 2026-06-03

Top 10 Safest ZIP Codes in Arizona

Highest Home Safety Scores in the state.

#ZIP CodeCityCountyScoreGrade
1 85342 MorristownMaricopa 83 B
2 85377 CarefreeMaricopa 83 B
3 85601 ArivacaPima 83 B
4 85623 OraclePinal 83 B
5 86337 SeligmanYavapai 83 B
6 85122 Casa GrandePinal 82 B
7 85130 Casa GrandePinal 82 B
8 85193 Casa GrandePinal 82 B
9 85194 Casa GrandePinal 82 B
10 85222 Casa GrandePinal 82 B

10 Lowest-Scoring ZIP Codes in Arizona

#ZIP CodeCityCountyScoreGradeViolations
1 86313 PrescottYavapai 27 F 49
2 86304 PrescottYavapai 27 F 49
3 86302 PrescottYavapai 27 F 49
4 86305 PrescottYavapai 36 F 49
5 86303 PrescottYavapai 36 F 49
6 86301 PrescottYavapai 36 F 49
7 85938 SpringervilleApache 45 D 24
8 85749 TucsonPima 48 D 218
9 85235 HaydenGila 48 D 26
10 85223 Arizona CityPinal 48 D 32

County Rankings

Water quality breakdown by county. 15 counties with data in Arizona.

Loading county map…
F (0-49) D (50-64) C (65-74) B (75-84) A (85+)

County-level aggregation of ZIP code safety scores • EPA SDWIS, FEMA NFIP, EPA Radon, USGS, NIFC

CountyAvg ScoreGradeZIPsBest ZIPWorst ZIP
Maricopa 64 C 197 85342 (83) 85031 (48)
Pinal 71 B 48 85623 (83) 85223 (48)
Gila 63 C 15 85502 (82) 85235 (48)
Pima 58 C 72 85601 (83) 85749 (48)
Apache 58 C 33 85925 (82) 85938 (45)
Yavapai 63 C 34 86337 (83) 86313 (27)
La Paz 66 C 9 85357 (82) 85371 (53)
Yuma 63 C 12 85349 (81) 85356 (53)
Cochise 72 B 29 85609 (82) 85617 (53)
Graham 58 C 8 85546 (68) 85551 (53)
Greenlee 63 C 3 85534 (74) 85533 (49)
Santa Cruz 68 C 8 85624 (82) 85611 (53)
Navajo 68 C 21 85934 (82) 86034 (53)
Coconino 63 C 36 86038 (82) 86545 (53)
Mohave 72 B 28 86429 (82) 86021 (51)

Most Common Contaminants in Arizona

Contaminant / RuleCategoryZIPs AffectedViolationsHealth Risk
Consumer Confidence Report Rule Reporting 408 6928 Yes
Revised Total Coliform Rule Microbiological 367 3109 No
Stage 1 DBP Rule Treatment Technique 344 1751 Yes
Lead and Copper Rule Treatment Technique 328 2821 No
Surface Water Treatment Rule Treatment Technique 325 1667 No
Total Trihalomethanes (TTHM) Disinfection Byproducts 301 1163 No
Barium Inorganic 268 1233 Yes
Stage 2 DBP Rule Treatment Technique 267 2213 Yes

Overview

We track water quality, weather alerts, plumbing regulations, and energy rebates for 553 ZIP codes across Arizona, covering 439 community water systems that serve approximately 6,391,769 people.

461 of 553 ZIP codes (83%) have recorded EPA violations. 4074 health-based violations have been documented.

Plumbing Regulations

Arizona follows the Uniform Plumbing Code (2018 edition).

  • Plumbing code: UPC (2018)
  • Homeowner DIY: Allowed with permit
  • Water heater permit: Required
  • Annual backflow test: Required

Full Arizona regulations →

Areas with Most Violations

ZIP Code City Safety Score Violations Health-Based System
85701 Tucson C 218 29 City of Tucson
85702 Tucson D 218 29 City of Tucson
85703 Tucson D 218 29 City of Tucson
85704 Tucson C 218 29 City of Tucson
85705 Tucson D 218 29 City of Tucson
85706 Tucson C 218 29 City of Tucson
85707 Tucson D 218 29 Usaf Davis Monthan Afb
85708 Tucson D 218 29 Usaf Davis Monthan Afb
85709 Tucson D 218 29 City of Tucson
85710 Tucson D 218 29 City of Tucson

Areas with No Violations

ZIP Code City Safety Score System Population
85121 Bapchule D CHANDLER CITY OF 247,328
85147 Sacaton D CHANDLER HEIGHTS CITRUS IRRIGATION DIST 2,620
85190 Tortilla Flat D ARIZONA WATER CO - APACHE JUNCTION 62,055
85191 Valley Farms C ARIZONA TRAINING PROGRAM 470
85264 Fort Mcdowell D City of Scottsdale 241,361
85309 Glendale Luke Afb D Usaf Luke Air Force Base 8,440
85322 Arlington C GW -BWC, INC- SUNSHINE 604
85329 Cashion C City of Avondale 83,001
85339 Laveen C PHOENIX CITY OF 1,695,000
85341 Lukeville D Arizona Water Company - Ajo 2,100

Home Safety Score

Average Home Safety Score for Arizona: C (64/100)

Lead & Copper

  • Average lead level (90th percentile): 0.0032 mg/L (EPA action level: 0.015 mg/L)
  • 5 ZIP codes exceed the EPA lead action level

Radon Risk

  • High risk (Zone 1): 0 ZIP codes (0%)
  • Moderate risk (Zone 2): 553 ZIP codes
  • Low risk (Zone 3): 0 ZIP codes

ZIP Code Reports for Arizona

Largest Communities

ZIP Code City Population Safety Grade Violations
85018 Phoenix 2,387,614 D 126
85050 Phoenix 2,387,614 C 126
85008 Phoenix 2,311,253 D 126
85044 Phoenix 2,311,253 C 126
85086 Phoenix 2,156,368 D 126
85085 Phoenix 2,150,473 C 126
85001 Phoenix 2,146,253 C 126
85002 Phoenix 2,146,253 D 126
85003 Phoenix 2,146,253 C 126
85004 Phoenix 2,146,253 C 126
85005 Phoenix 2,146,253 C 126
85006 Phoenix 2,146,253 C 126
85007 Phoenix 2,146,253 D 126
85009 Phoenix 2,146,253 D 126
85010 Phoenix 2,146,253 D 126
85011 Phoenix 2,146,253 D 126
85012 Phoenix 2,146,253 D 126
85013 Phoenix 2,146,253 D 126
85014 Phoenix 2,146,253 D 126
85015 Phoenix 2,146,253 D 126

Lowest Safety Scores

ZIP Code City Score Grade Violations
86302 Prescott 27 F 49
86304 Prescott 27 F 49
86313 Prescott 27 F 49
86301 Prescott 36 F 49
86303 Prescott 36 F 49

Highest Safety Scores

ZIP Code City Score Grade Violations
85342 Morristown 83 B 0
85377 Carefree 83 B 0
85601 Arivaca 83 B 0
85623 Oracle 83 B 0
86337 Seligman 83 B 0

All 553 ZIP Codes in Arizona

Data Sources

Updated daily.

Frequently Asked Questions

Is the water safe to drink in Arizona?

Arizona has 439 community water systems serving 6,391,769 people across 553 ZIP codes. There are 29,686 recorded violations, including 4074 health-based. 461 of 553 ZIP codes have at least one violation.

What plumbing code does Arizona follow?

Arizona follows the UPC plumbing code. DIY plumbing work is allowed for homeowners.

Is lead a concern in Arizona's drinking water?

5 ZIP codes in Arizona have lead levels exceeding the EPA action level of 0.015 mg/L.

Get safety alerts for Arizona

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Violations found — check filter options Free tool — no phone call required.