STATE REPORT OK 2 ALERTS 3730 HEALTH VIOLATIONS

Oklahoma Water: 10.2K Violations — 771 ZIPs

771 ZIP codes · 805 water systems · IPC plumbing code · Updated 2026-06-03

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

771
ZIP Codes
805
Water Systems
633
ZIPs with Violations
2
Active Alerts
IPC
Plumbing Code
B · 79
Avg Safety Score
10
ZIPs Exceeding Lead Limit
#6
of 51 States
67%
ZIPs Rated A or B
82%
ZIPs with Violations
B
Oklahoma average: 79/100 — ranked #6 of 51 states. 12 points above the national average (67). 67% 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.

315
A
205
B
233
C
17
D
1
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 Oklahoma

Highest Home Safety Scores in the state.

#ZIP CodeCityCountyScoreGrade
1 73016 CashionKingfisher 99 A
2 73073 OrlandoLogan 99 A
3 73082 Rush SpringsGrady 99 A
4 73430 BurneyvilleLove 99 A
5 73432 ColemanJohnston 99 A
6 73433 Elmore CityGarvin 99 A
7 73450 MilburnJohnston 99 A
8 73459 ThackervilleLove 99 A
9 73461 WapanuckaJohnston 99 A
10 73622 BessieWashita 99 A

10 Lowest-Scoring ZIP Codes in Oklahoma

#ZIP CodeCityCountyScoreGradeViolations
1 74536 ClaytonPushmataha 37 F 53
2 74873 TecumsehPottawatomie 40 D 67
3 74332 Big CabinMayes 41 D 11
4 74560 PittsburgPittsburg 46 D 28
5 74883 WetumkaHughes 51 D 30
6 74429 CowetaWagoner 52 D 28
7 74945 Marble CitySequoyah 53 D 0
8 74931 BunchCherokee 53 D 0
9 74878 WanettePottawatomie 53 D 38
10 74452 PeggsMayes 53 D 0

County Rankings

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

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
Caddo 82 B 13 73009 (98) 73033 (55)
Grady 75 B 10 73082 (99) 73004 (55)
Oklahoma 90 A 89 73113 (95) 73020 (63)
McClain 92 A 7 73031 (97) 73080 (81)
Canadian 70 B 10 73064 (81) 73090 (55)
Kingfisher 84 B 6 73016 (99) 73750 (55)
Cleveland 82 B 12 73165 (91) 73051 (70)
Washita 83 B 10 73622 (99) 73647 (65)
Logan 86 A 8 73073 (99) 73058 (66)
Murray 82 B 6 73086 (94) 73436 (66)
Blaine 81 B 9 73763 (94) 73770 (66)
Kiowa 86 A 7 73041 (98) 73566 (64)
Garvin 80 B 8 73433 (99) 73057 (62)
Stephens 71 B 7 73491 (91) 73533 (57)
Noble 79 B 5 73061 (98) 74651 (66)
Custer 82 B 7 73669 (95) 73646 (66)
Carter 72 B 18 73456 (94) 73401 (65)
Love 94 A 4 73430 (99) 73441 (83)
Johnston 90 A 8 73432 (99) 74836 (66)
Marshall 79 B 3 73439 (94) 73446 (70)
Bryan 83 B 15 74733 (98) 74753 (66)
Comanche 79 B 17 73543 (94) 73527 (64)
Jefferson 72 B 6 73569 (93) 73573 (62)
Jackson 69 C 10 73537 (81) 73560 (63)
Tillman 72 B 6 73551 (98) 73546 (55)
Cotton 70 B 4 73572 (82) 73562 (63)
Ottawa 80 B 11 74339 (94) 74360 (66)
Greer 84 B 4 73547 (94) 73571 (66)
Harmon 65 C 1 73550 (65) 73550 (65)
Beckham 89 A 6 73648 (97) 73668 (66)
Roger Mills 73 B 6 73660 (94) 73628 (62)
Dewey 81 B 8 73835 (98) 73667 (60)
Garfield 86 A 18 73720 (99) 74640 (66)
Alfalfa 80 B 8 73749 (91) 73716 (63)
Woods 88 A 5 73842 (97) 73746 (66)
Major 76 B 5 73768 (97) 73737 (65)
Grant 85 A 8 73758 (94) 74646 (66)
Ellis 73 B 5 73843 (82) 73840 (65)
Woodward 82 B 5 73802 (97) 73857 (61)
Harper 80 B 3 73848 (92) 73851 (66)
Beaver 61 C 6 73932 (76) 73931 (53)
Texas 76 B 7 73901 (83) 73945 (66)
Cimarron 63 C 4 73947 (79) 73946 (53)
Osage 75 B 11 74084 (97) 74652 (55)
Washington 67 C 8 74051 (83) 74006 (55)
Tulsa 86 A 63 74060 (94) 74012 (65)
Creek 82 B 13 74028 (97) 74066 (63)
Wagoner 65 C 9 74013 (70) 74429 (52)
Rogers 81 B 10 74016 (95) 74080 (66)
Pawnee 80 B 7 74650 (96) 74045 (66)
Payne 78 B 10 74023 (94) 74085 (66)
Lincoln 79 B 10 74824 (95) 74875 (57)
Nowata 73 B 4 74042 (79) 74048 (65)
Okmulgee 71 B 8 74437 (84) 74460 (55)
Craig 73 B 4 74349 (90) 74333 (66)
Mayes 69 C 12 74366 (83) 74332 (41)
Delaware 62 C 10 74342 (74) 74359 (53)
Muskogee 70 B 17 74439 (95) 74463 (55)
Pittsburg 70 B 17 74442 (89) 74560 (46)
McIntosh 73 B 5 74845 (93) 74461 (66)
Cherokee 63 C 8 74441 (75) 74931 (53)
Sequoyah 64 C 7 74955 (72) 74945 (53)
Adair 65 C 4 74960 (77) 74457 (55)
Haskell 70 B 4 74462 (75) 74944 (66)
Pushmataha 63 C 9 74523 (70) 74536 (37)
Atoka 68 C 5 74525 (70) 74555 (66)
Coal 87 A 6 74530 (99) 74538 (65)
Hughes 77 B 7 74531 (98) 74883 (51)
Le Flore 71 B 21 74947 (94) 74577 (55)
Latimer 66 C 4 74563 (70) 74578 (62)
Choctaw 72 B 9 74759 (96) 74761 (66)
Kay 83 B 8 74641 (97) 74631 (55)
McCurtain 69 C 14 74728 (85) 74750 (55)
Pottawatomie 67 C 11 74840 (94) 74873 (40)
Seminole 86 A 8 74854 (98) 74837 (66)
Pontotoc 89 A 8 74821 (98) 74843 (66)
Okfuskee 80 B 5 74829 (94) 74833 (66)

Most Common Contaminants in Oklahoma

Contaminant / RuleCategoryZIPs AffectedViolationsHealth Risk
Stage 2 DBP Rule Treatment Technique 381 977 Yes
Total Trihalomethanes (TTHM) Disinfection Byproducts 350 777 Yes
Surface Water Treatment Rule Treatment Technique 281 675 No
Revised Total Coliform Rule Microbiological 274 938 Yes
Consumer Confidence Report Rule Reporting 264 1243 Yes
Stage 1 DBP Rule Treatment Technique 233 423 No
Haloacetic Acids (HAA5) Disinfection Byproducts 174 2203 Yes
Contaminant 4100 Other 109 147 No

Overview

We track water quality, weather alerts, plumbing regulations, and energy rebates for 771 ZIP codes across Oklahoma, covering 805 community water systems that serve approximately 2,965,841 people.

633 of 771 ZIP codes (82%) have recorded EPA violations. 3730 health-based violations have been documented.

Active Weather Alerts

2 active alerts in Oklahoma including 2 warnings. Severe weather can directly affect tap water quality — flooding, power outages, and infrastructure damage may lead to boil-water advisories.

Alert Severity Areas
Flash Flood Warning Severe Haskell, OK; McIntosh, OK; Muskogee, OK
Flash Flood Warning Severe Muskogee, OK

View all Oklahoma alerts →

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 Safety Score Violations Health-Based System
74035 Hominy C 186 88 Hominy
74884 Wewoka B 134 97 Wewoka Public Works Authority
73077 Perry C 106 16 Perry Water & Light Department
74652 Shidler C 103 17 Osage Company Rwd #21
74467 Wagoner C 100 64 Wagoner
74477 Wagoner C 100 64 Wagoner
74027 Delaware B 99 5 Craig Company Rwd #2
74002 Barnsdall C 98 66 Osage Company Rwd # 5
74966 Wister C 97 27 Leflore Company Rwd #18
74643 Lamont A 96 1 Tonkawa

Areas with No Violations

ZIP Code City Safety Score System Population
73001 Albert C GRACEMONT PWA 336
73022 Concho C EL RENO 16,212
73027 Coyle A Guthrie 9,925
73058 Meridian C COYLE 289
73073 Orlando A Stillwater Utilities Authority 53,000
73082 Rush Springs A Grady Company Rwd #7 (ninnekah) 2,425
73097 Wheatland C OKLAHOMA CITY 644,000
73425 Countyline C WESTERN CARTER CO WATER CORP 2,000
73430 Burneyville A Jefferson Company Cons Rwd #1 8,398
73433 Elmore City A Elmore City Rw Corporation 1,107

Home Safety Score

Average Home Safety Score for Oklahoma: B (79/100)

Lead & Copper

  • Average lead level (90th percentile): 0.0053 mg/L (EPA action level: 0.015 mg/L)
  • 10 ZIP codes 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
73026 Norman 783,486 B 32
73071 Norman 783,486 B 32
73160 Oklahoma City 781,413 A 2
73114 Oklahoma City 755,953 A 2
73034 Edmond 741,371 B 5
73007 Arcadia 733,265 A 7
73003 Edmond 732,164 A 5
73012 Edmond 732,164 A 5
73013 Edmond 732,164 A 5
73049 Jones 729,711 B 3
73127 Oklahoma City 719,350 B 2
73159 Oklahoma City 717,619 B 2
73179 Oklahoma City 717,619 A 2
73099 Yukon 701,761 C 11
73119 Oklahoma City 699,043 B 2
73128 Oklahoma City 699,043 A 2
73122 Oklahoma City 696,852 A 2
73132 Oklahoma City 696,852 B 2
73139 Oklahoma City 695,121 B 2
73169 Oklahoma City 695,121 A 2

Lowest Safety Scores

ZIP Code City Score Grade Violations
74536 Clayton 37 F 53
74873 Tecumseh 40 D 67
74332 Big Cabin 41 D 11
74560 Pittsburg 46 D 28
74883 Wetumka 51 D 30

Highest Safety Scores

ZIP Code City Score Grade Violations
73016 Cashion 99 A 1
73073 Orlando 99 A 0
73082 Rush Springs 99 A 0
73430 Burneyville 99 A 0
73432 Coleman 99 A 1

All 771 ZIP Codes in Oklahoma

Data Sources

Updated daily.

Frequently Asked Questions

Is the water safe to drink in Oklahoma?

Oklahoma has 805 community water systems serving 2,965,841 people across 771 ZIP codes. There are 10,231 recorded violations, including 3730 health-based. 633 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?

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

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