STATE REPORT IN 183 HEALTH VIOLATIONS

Indiana Home Safety Profiles by ZIP

980 ZIP codes · 389 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 980 ZIP codes across Indiana, covering 389 public water systems that serve about 4,573,803 people. 427 ZIP codes carry at least one EPA violation on record.

980
ZIP Codes
389
Water Systems
427
ZIPs with Violations
IPC
Plumbing Code
5
Avg Rebate Programs
C · 64
Avg Safety Score
4
ZIPs Exceeding Lead Limit
66%
High Radon Risk (Zone 1)
#43
of 50 States
25%
ZIPs Rated A or B
80%
ZIPs with Violations
C
Indiana average: 64/100 - ranked #43 of 50 states. 9 points below the national average (73). 80% of ZIP codes have recorded violations.

Tap water safety in Indiana is a mixed picture that skews low - a notable share of monitored systems carry unresolved health violation records in the current EPA dataset.

Score Distribution

How Indiana's 980 ZIP codes are distributed across safety grades.

0
A
58
B
141
C
33
D
1
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 Indiana

Highest Home Safety Scores in the state.

#ZIP CodeCityCountyScoreGrade
1 46383 ValparaisoPorter 83 B
2 46393 WheelerPorter 83 B
3 47129 ClarksvilleFloyd 83 B
4 47527 DuboisDubois 83 B
5 47531 EvanstonSpencer 83 B
6 47550 LamarSpencer 83 B
7 47552 Lincoln CitySpencer 83 B
8 47577 Saint MeinradSpencer 83 B
9 47610 ChandlerWarrick 83 B
10 47611 ChrisneySpencer 83 B

10 Lowest-Scoring ZIP Codes in Indiana

#ZIP CodeCityCountyScoreGradeViolations
1 46614 South BendSt. Joseph 33 F 53
2 47111 CharlestownClark 41 D 26
3 47141 MarysvilleClark 42 D 23
4 46516 ElkhartElkhart 44 D 17
5 46011 AndersonMadison 45 D 10
6 47143 MemphisClark 46 D 7
7 46013 AndersonMadison 46 D 8
8 47201 ColumbusBartholomew 47 D 10
9 46552 New CarlisleSt. Joseph 47 D 6
10 46224 IndianapolisMarion 47 D 35

County Rankings

Water quality breakdown by county. 92 counties with data in Indiana.

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
18001 N/A N/A 7 N/A N/A
18003 64 C 56 46798 (65) 46806 (58)
18005 61 C 10 47246 (66) 47201 (47)
18007 N/A N/A 8 N/A N/A
18009 N/A N/A 2 N/A N/A
18011 65 C 7 46052 (66) 46077 (64)
18013 62 C 6 47468 (66) 46160 (56)
18015 58 C 10 46041 (66) 47960 (50)
18017 N/A N/A 10 N/A N/A
18019 52 D 17 47130 (67) 47111 (41)
18021 N/A N/A 11 N/A N/A
18023 N/A N/A 6 N/A N/A
18025 N/A N/A 8 N/A N/A
18027 N/A N/A 7 N/A N/A
18029 N/A N/A 6 N/A N/A
18031 N/A N/A 6 N/A N/A
18033 N/A N/A 6 N/A N/A
18035 66 C 15 47302 (67) 47303 (64)
18037 79 B 12 47527 (83) 47513 (71)
18039 55 C 14 46550 (67) 46516 (44)
18041 N/A N/A 3 N/A N/A
18043 70 B 7 47129 (83) 47122 (55)
18045 N/A N/A 8 N/A N/A
18047 N/A N/A 8 N/A N/A
18049 N/A N/A 11 N/A N/A
18051 N/A N/A 11 N/A N/A
18053 N/A N/A 11 N/A N/A
18055 82 B 11 47424 (82) 47441 (81)
18057 65 C 17 46038 (67) 46062 (60)
18059 N/A N/A 7 N/A N/A
18061 N/A N/A 13 N/A N/A
18063 66 C 12 46118 (67) 46168 (65)
18065 66 C 15 47356 (67) 47385 (65)
18067 67 C 9 46901 (67) 46902 (67)
18069 N/A N/A 4 N/A N/A
18071 N/A N/A 9 N/A N/A
18073 N/A N/A 6 N/A N/A
18075 N/A N/A 5 N/A N/A
18077 N/A N/A 7 N/A N/A
18079 N/A N/A 7 N/A N/A
18081 N/A N/A 6 N/A N/A
18083 77 B 13 47512 (78) 47591 (76)
18085 N/A N/A 16 N/A N/A
18087 N/A N/A 9 N/A N/A
18089 72 B 32 46311 (75) 46307 (58)
18091 N/A N/A 14 N/A N/A
18093 N/A N/A 9 N/A N/A
18095 58 C 17 46048 (67) 46011 (45)
18097 57 C 62 46107 (58) 46224 (47)
18099 N/A N/A 8 N/A N/A
18101 N/A N/A 3 N/A N/A
18103 N/A N/A 9 N/A N/A
18105 64 C 14 47404 (65) 47401 (62)
18107 N/A N/A 16 N/A N/A
18109 N/A N/A 7 N/A N/A
18111 N/A N/A 10 N/A N/A
18113 N/A N/A 9 N/A N/A
18115 N/A N/A 1 N/A N/A
18117 N/A N/A 5 N/A N/A
18119 N/A N/A 8 N/A N/A
18121 N/A N/A 9 N/A N/A
18123 58 C 9 47520 (58) 47586 (58)
18125 N/A N/A 5 N/A N/A
18127 80 B 9 46383 (83) 46385 (76)
18129 81 B 6 47620 (82) 47612 (80)
18131 N/A N/A 4 N/A N/A
18133 N/A N/A 8 N/A N/A
18135 N/A N/A 9 N/A N/A
18137 N/A N/A 10 N/A N/A
18139 N/A N/A 7 N/A N/A
18141 49 D 26 46536 (66) 46614 (33)
18143 N/A N/A 2 N/A N/A
18145 67 C 10 46110 (67) 46176 (66)
18147 81 B 14 47531 (83) 47635 (77)
18149 N/A N/A 6 N/A N/A
18151 N/A N/A 6 N/A N/A
18153 N/A N/A 9 N/A N/A
18155 N/A N/A 5 N/A N/A
18157 63 C 18 47907 (67) 47905 (53)
18159 N/A N/A 6 N/A N/A
18161 N/A N/A 3 N/A N/A
18163 83 B 36 47712 (83) 47725 (83)
18165 N/A N/A 9 N/A N/A
18167 61 C 21 47804 (67) 47802 (56)
18169 67 C 10 46974 (67) 46962 (66)
18171 N/A N/A 4 N/A N/A
18173 77 B 7 47610 (83) 47613 (59)
18175 N/A N/A 4 N/A N/A
18177 N/A N/A 14 N/A N/A
18179 N/A N/A 9 N/A N/A
18181 N/A N/A 8 N/A N/A
18183 65 C 4 46725 (65) 46725 (65)

Most Common Contaminants in Indiana

Contaminant / RuleCategoryZIPs AffectedViolationsHealth Risk
Surface Water Treatment Rule Treatment Technique 287 759 No
Consumer Confidence Report Rule Reporting 263 602 Yes
Stage 1 DBP Rule Treatment Technique 188 429 Yes
Haloacetic Acids (HAA5) Disinfection Byproducts 130 288 Yes
Total Trihalomethanes (TTHM) Disinfection Byproducts 113 204 Yes
Contaminant 0700 Other 74 180 Yes
Stage 2 DBP Rule Treatment Technique 61 109 Yes
Lead and Copper Rule Treatment Technique 47 68 No

Overview

We track multi-source home safety signals for 980 ZIP records across Indiana. Home Safety Score model 4.0.0 is published for 233 scored records; missing required evidence suppresses the score.

The EPA snapshots used for this build directly map water systems to 531 ZIP records, covering 389 community water systems that serve approximately 4,573,803 people.

427 of 531 ZIP codes with a reported violation count in the available EPA record (80%) have recorded EPA violations. 183 health-based violations appear in the available health breakdown.

Plumbing Regulations

Indiana follows the Indiana Plumbing Code (based on IPC) (2020 edition).

  • Plumbing code: IPC (2020)
  • Homeowner DIY: Licensed plumber required
  • Water heater permit: Required
  • Annual backflow test: Required

Full Indiana regulations →

Energy & Water Rebates

Across 955 tracked ZIP codes in Indiana, residents have access to an average of 5 water-related rebate programs - including incentives for heat pump water heaters, efficient fixtures, and plumbing upgrades.

Check rebates for your ZIP code →

Areas with Most Violations

ZIP Code City Home Safety Grade Violations Health-Based System
46307 Crown Point C 89 2 Crown Point Water Works
46303 Cedar Lake C 81 2 Cedar Lake Water Works
47274 Seymour — 79 9 Seymour Water Plant, Lp
47240 Greensburg — 70 17 Greensburg Municipal Water Works
46151 Martinsville — 67 0 Martinsville Water Utility
47265 North Vernon — 63 8 North Vernon Water Department
47959 Monon — 58 4 Monon Water Utility
47978 Rensselaer — 58 4 Rensselaer Water Department
47283 Westport — 56 11 Westport Water Company
47421 Bedford — 56 14 Bedford City Utilities

Areas with No Violations

ZIP Code City Home Safety Grade System Population
46031 Atlanta — Arcadia Water Department 1,515
46038 Fishers C Citizens Water - Indianapolis 880,345
46048 Ingalls C Citizens Water of Westfield Llc 65
46072 Tipton — Tipton Utility Service B 5,200
46107 Beech Grove C Citizens Water - Indianapolis 880,345
46110 Boggstown C Citizens Water - Indianapolis 880,345
46118 Clayton C Citizens Water - Indianapolis 880,345
46126 Fairland — Citizens Water - Indianapolis 880,345
46157 Monrovia — Citizens Water - Indianapolis 880,345
46162 Needham — Indiana American Water - Johnson County 86,813

Home Safety Score

Average Home Safety Score for Indiana: C (64/100) across 233 scored of 980 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): 0.0038 mg/L (EPA action level: 0.015 mg/L)
  • 4 of 526 ZIP codes with known status exceed the EPA lead action level

Radon Risk

  • High risk (Zone 1): 635 ZIP codes (66%)
  • Moderate risk (Zone 2): 327 ZIP codes
  • Low risk (Zone 3): 0 ZIP codes

ZIP Code Reports for Indiana

Largest Communities

ZIP Code City Population Safety Grade Violations
46077 Zionsville 1,047,645 C 5
46032 Carmel 1,041,765 C 4
46033 Carmel 1,041,765 C 4
46074 Westfield 1,041,765 C 4
46143 Greenwood 1,010,376 — 9
46142 Greenwood 1,001,576 — 8
46062 Noblesville 993,133 C 8
46240 Indianapolis 980,272 C 4
46260 Indianapolis 980,272 C 4
46268 Indianapolis 980,272 C 4
46280 Indianapolis 980,272 C 4
46162 Needham 967,158 — 0
46217 Indianapolis 967,158 C 0
46227 Indianapolis 967,158 C 0
46237 Indianapolis 967,158 C 0
46259 Indianapolis 967,158 C 0
46122 Danville 960,685 C 3
46034 Cicero 953,508 C 8
46069 Sheridan 952,153 C 1
46158 Mooresville 946,583 — 23

Lowest Published Home Safety Scores

ZIP Code City Score Grade Violations
46614 South Bend 33 F 53
47111 Charlestown 41 D 26
47141 Marysville 42 D 23
46516 Elkhart 44 D 17
46011 Anderson 45 D 10

Highest Published Home Safety Scores

ZIP Code City Score Grade Violations
46383 Valparaiso 83 B 0
46393 Wheeler 83 B 0
47129 Clarksville 83 B 0
47527 Dubois 83 B 1
47531 Evanston 83 B 2

All 980 ZIP Codes in Indiana

Data Sources

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

Largest water systems in Indiana

The 12 biggest community water systems serving Indiana, of 389 total.

Show all 12 water systems

Systems with the most violations in Indiana

12 systems in Indiana with the most recorded EPA violations.

Frequently Asked Questions

Is the water safe to drink in Indiana?

Indiana has 389 community water systems serving 4,573,803 people across 980 ZIP codes. There are 1,626 recorded violations, including 183 health-based. 427 of 980 ZIP codes have at least one violation.

What plumbing code does Indiana follow?

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

Is lead a concern in Indiana's drinking water?

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

What is the radon risk in Indiana?

66% of ZIP codes in Indiana fall in EPA Radon Zone 1 (highest risk).

How to cite this page

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

Page version: August 2026.

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