STATE REPORT OK 3880 HEALTH VIOLATIONS

Oklahoma Home Safety Profiles by ZIP

771 ZIP codes · 513 water systems · IPC plumbing code · Updated

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData, NWS, State plumbing boards, Rewiring America

ZipCheckup tracks drinking-water and home-safety data for 771 ZIP codes across Oklahoma, covering 513 public water systems that serve about 2,937,940 people. 512 ZIP codes carry at least one EPA violation on record.

771
ZIP Codes
513
Water Systems
512
ZIPs with Violations
IPC
Plumbing Code
A · 86
Avg Safety Score
9
ZIPs Exceeding Lead Limit
#6
of 50 States
91%
ZIPs Rated A or B
93%
ZIPs with Violations
A
Oklahoma average: 86/100 - ranked #6 of 50 states. 13 points above the national average (73). 91% of ZIP codes scored A or B.

Compliance reports for Oklahoma water systems consistently reflect documented safety indicators - health-based exceedances are the exception, not the pattern.

Score Distribution

How Oklahoma's 771 ZIP codes are distributed across safety grades.

101
A
61
B
14
C
2
D
0
F
85-10070-8455-6940-540-39

Home Safety Scores by State

Loading map…
F (0-39) D (40-54) C (55-69) B (70-84) A (85+)

Model 4.0.0 inputs: EPA SDWIS, UCMR5 PFAS, EPA radon zones, annual county AQI •

Top 10 Safest ZIP Codes in Oklahoma

Highest Home Safety Scores in the state.

#ZIP CodeCityCountyScoreGrade
1 74103 TulsaTulsa 100 A
2 74104 TulsaTulsa 100 A
3 74105 TulsaTulsa 100 A
4 74106 TulsaTulsa 100 A
5 74110 TulsaTulsa 100 A
6 74112 TulsaTulsa 100 A
7 74114 TulsaTulsa 100 A
8 74115 TulsaTulsa 100 A
9 74119 TulsaTulsa 100 A
10 74120 TulsaTulsa 100 A

10 Lowest-Scoring ZIP Codes in Oklahoma

#ZIP CodeCityCountyScoreGradeViolations
1 74365 SalinaMayes 50 D 193
2 74352 Locust GroveMayes 50 D 224
3 74337 ChouteauMayes 55 C 34
4 74361 PryorMayes 56 C 40
5 73025 EdmondOklahoma 58 C 213
6 74955 SallisawSequoyah 67 C 50
7 74948 MuldrowSequoyah 67 C 33
8 74936 GansSequoyah 67 C 25
9 74604 Ponca CityKay 67 C 210
10 74435 GoreSequoyah 67 C 32

County Rankings

Water quality breakdown by county. 77 counties with data in Oklahoma.

Loading county map…
F (0-39) D (40-54) C (55-69) B (70-84) A (85+)

County-level aggregation of measured ZIP Home Safety Scores • EPA SDWIS, UCMR 5 PFAS, EPA radon zones, EPA AirData

CountyAvg ScoreGradeZIPsBest ZIPWorst ZIP
40001 N/A N/A 4 N/A N/A
40003 N/A N/A 8 N/A N/A
40005 N/A N/A 7 N/A N/A
40007 N/A N/A 5 N/A N/A
40009 N/A N/A 6 N/A N/A
40011 N/A N/A 8 N/A N/A
40013 N/A N/A 15 N/A N/A
40015 N/A N/A 13 N/A N/A
40017 84 B 10 73064 (90) 73127 (83)
40019 90 A 17 73458 (98) 73438 (83)
40021 N/A N/A 9 N/A N/A
40023 N/A N/A 8 N/A N/A
40025 N/A N/A 4 N/A N/A
40027 87 A 13 73019 (99) 73170 (83)
40029 N/A N/A 6 N/A N/A
40031 91 A 16 73503 (99) 73538 (83)
40033 N/A N/A 4 N/A N/A
40035 N/A N/A 4 N/A N/A
40037 90 A 14 74050 (97) 74066 (83)
40039 N/A N/A 6 N/A N/A
40041 N/A N/A 9 N/A N/A
40043 84 B 8 73835 (84) 73835 (84)
40045 N/A N/A 5 N/A N/A
40047 N/A N/A 17 N/A N/A
40049 N/A N/A 8 N/A N/A
40051 N/A N/A 10 N/A N/A
40053 N/A N/A 7 N/A N/A
40055 N/A N/A 3 N/A N/A
40057 N/A N/A 2 N/A N/A
40059 N/A N/A 4 N/A N/A
40061 N/A N/A 6 N/A N/A
40063 N/A N/A 7 N/A N/A
40065 N/A N/A 9 N/A N/A
40067 N/A N/A 7 N/A N/A
40069 N/A N/A 8 N/A N/A
40071 77 B 9 74631 (87) 74604 (67)
40073 N/A N/A 6 N/A N/A
40075 98 A 7 73651 (99) 73564 (98)
40077 N/A N/A 4 N/A N/A
40079 N/A N/A 20 N/A N/A
40081 N/A N/A 10 N/A N/A
40083 N/A N/A 8 N/A N/A
40085 95 A 5 73448 (99) 73453 (89)
40087 87 A 7 74831 (94) 73093 (83)
40089 N/A N/A 15 N/A N/A
40091 N/A N/A 6 N/A N/A
40093 N/A N/A 7 N/A N/A
40095 N/A N/A 3 N/A N/A
40097 62 C 12 74367 (75) 74365 (50)
40099 N/A N/A 4 N/A N/A
40101 N/A N/A 14 N/A N/A
40103 N/A N/A 6 N/A N/A
40105 N/A N/A 5 N/A N/A
40107 N/A N/A 5 N/A N/A
40109 83 B 90 73003 (92) 73025 (58)
40111 N/A N/A 8 N/A N/A
40113 87 A 11 74633 (100) 74070 (83)
40115 85 A 11 74554 (90) 74354 (83)
40117 N/A N/A 7 N/A N/A
40119 N/A N/A 10 N/A N/A
40121 92 A 14 74528 (99) 74565 (83)
40123 N/A N/A 8 N/A N/A
40125 N/A N/A 10 N/A N/A
40127 N/A N/A 10 N/A N/A
40129 N/A N/A 6 N/A N/A
40131 N/A N/A 10 N/A N/A
40133 N/A N/A 8 N/A N/A
40135 71 B 8 74946 (83) 74955 (67)
40137 N/A N/A 8 N/A N/A
40139 N/A N/A 7 N/A N/A
40141 N/A N/A 7 N/A N/A
40143 95 A 61 74103 (100) 74011 (67)
40145 N/A N/A 9 N/A N/A
40147 85 A 8 74061 (89) 74029 (83)
40149 N/A N/A 10 N/A N/A
40151 N/A N/A 5 N/A N/A
40153 N/A N/A 5 N/A N/A

Most Common Contaminants in Oklahoma

Contaminant / RuleCategoryZIPs AffectedViolationsHealth Risk
Stage 2 DBP Rule Treatment Technique 424 1828 Yes
Haloacetic Acids (HAA5) Disinfection Byproducts 380 8638 Yes
Total Trihalomethanes (TTHM) Disinfection Byproducts 339 3546 Yes
Revised Total Coliform Rule Microbiological 311 1242 Yes
Consumer Confidence Report Rule Reporting 287 1028 Yes
Surface Water Treatment Rule Treatment Technique 281 737 No
Stage 1 DBP Rule Treatment Technique 247 835 No
Arsenic Inorganic 197 713 Yes

Overview

We track multi-source home safety signals for 771 ZIP records across Oklahoma. Home Safety Score model 4.0.0 is published for 178 scored records; missing required evidence suppresses the score.

The EPA snapshots used for this build directly map water systems to 549 ZIP records, covering 513 community water systems that serve approximately 2,937,940 people.

512 of 549 ZIP codes with a reported violation count in the available EPA record (93%) have recorded EPA violations. 3880 health-based violations appear in the available health breakdown.

Plumbing Regulations

Oklahoma follows the International Plumbing Code (2018 edition).

  • Plumbing code: IPC (2018)
  • Homeowner DIY: Licensed plumber required
  • Water heater permit: Required
  • Annual backflow test: Required

Full Oklahoma regulations →

Areas with Most Violations

ZIP Code City Home Safety Grade Violations Health-Based System
74873 Tecumseh — 790 50 Tecumseh Utility Authority
74331 Afton — 782 18 Ketchum Pwa
73010 Blanchard B 677 18 Blanchard
74079 Stroud — 658 19 Stroud Utilities Authority
74038 Jennings — 654 13 Creek Company Rwd # 5
74052 Oilton — 605 1 Oilton
74855 Meeker — 598 3 Meeker Public Works Authority
74864 Prague — 594 3 Prague
74869 Sparks — 586 2 Prague
73089 Tuttle — 482 3 Grady Company Rwd #6

Areas with No Violations

ZIP Code City Home Safety Grade System Population
73003 Edmond A Edmond Pwa 79,408
73102 Oklahoma City A Oklahoma City 644,000
73103 Oklahoma City A Oklahoma City 644,000
73104 Oklahoma City A Oklahoma City 644,000
73106 Oklahoma City A Oklahoma City 644,000
73107 Oklahoma City A Oklahoma City 644,000
73108 Oklahoma City A Oklahoma City 644,000
73109 Oklahoma City A Oklahoma City 644,000
73119 Oklahoma City A Oklahoma City 644,000
73121 Oklahoma City A Oklahoma City 644,000

Home Safety Score

Average Home Safety Score for Oklahoma: A (86/100) across 178 scored of 771 tracked ZIP records.

Model 4.0.0 uses the canonical components water-compliance, pfas-mcl-screen, radon-zone, annual-aqi across 3 required domains. The sections below provide additional context and do not change that score. Missing required evidence suppresses the score, and a favorable result is not a property-level safety certification.

Lead & Copper

  • Average lead level (90th percentile): 0.0035 mg/L (EPA action level: 0.015 mg/L)
  • 9 of 549 ZIP codes with known status exceed the EPA lead action level

Radon Risk

  • High risk (Zone 1): 0 ZIP codes (0%)
  • Moderate risk (Zone 2): 63 ZIP codes
  • Low risk (Zone 3): 708 ZIP codes

ZIP Code Reports for Oklahoma

Largest Communities

ZIP Code City Population Safety Grade Violations
73071 Norman 803,951 A 62
73160 Oklahoma City 803,951 B 62
73026 Norman 749,153 B 66
73007 Arcadia 733,265 — 30
73034 Edmond 732,615 B 29
73049 Jones 729,711 B 85
73012 Edmond 728,908 A 8
73013 Edmond 728,908 A 8
73114 Oklahoma City 727,428 B 69
73003 Edmond 723,408 A 0
73115 Oklahoma City 722,448 B 48
73117 Oklahoma City 722,063 A 11
73139 Oklahoma City 717,659 B 73
73170 Oklahoma City 717,659 B 73
73020 Choctaw 710,096 B 290
73084 Spencer 709,652 B 266
73141 Oklahoma City 704,124 B 182
73099 Yukon 701,573 B 124
73149 Oklahoma City 699,083 B 59
73165 Oklahoma City 699,083 A 59

Lowest Published Home Safety Scores

ZIP Code City Score Grade Violations
74352 Locust Grove 50 D 224
74365 Salina 50 D 193
74337 Chouteau 55 C 34
74361 Pryor 56 C 40
73025 Edmond 58 C 213

Highest Published Home Safety Scores

ZIP Code City Score Grade Violations
74103 Tulsa 100 A 0
74104 Tulsa 100 A 0
74105 Tulsa 100 A 0
74106 Tulsa 100 A 0
74110 Tulsa 100 A 0

All 771 ZIP Codes in Oklahoma

Data Sources

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

Largest water systems in Oklahoma

The 12 biggest community water systems serving Oklahoma, of 513 total.

Show all 12 water systems

Systems with the most violations in Oklahoma

12 systems in Oklahoma with the most recorded EPA violations.

Frequently Asked Questions

Is the water safe to drink in Oklahoma?

Oklahoma has 513 community water systems serving 2,937,940 people across 771 ZIP codes. There are 13,618 recorded violations, including 3880 health-based. 512 of 771 ZIP codes have at least one violation.

What plumbing code does Oklahoma follow?

Oklahoma follows the IPC plumbing code. A licensed plumber is generally required for plumbing work.

Is lead a concern in Oklahoma's drinking water?

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

How to cite this page

APA ZipCheckup. (2026). Oklahoma Home Safety Profiles by ZIP. https://zipcheckup.com/states/oklahoma/
BibTeX 
@misc{zipcheckup-states-oklahoma,
  author = {{ZipCheckup}},
  title  = {{Oklahoma Home Safety Profiles by ZIP}},
  year   = {2026},
  url    = {https://zipcheckup.com/states/oklahoma/}
}

Page version: August 2026.

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