STATE REPORT IA 32 HEALTH VIOLATIONS

Iowa Home Safety Profiles by ZIP

1058 ZIP codes · 278 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 1,058 ZIP codes across Iowa, covering 278 public water systems that serve about 2,283,326 people. 171 ZIP codes carry at least one EPA violation on record.

1058
ZIP Codes
278
Water Systems
171
ZIPs with Violations
IPC
Plumbing Code
C · 63
Avg Safety Score
100%
High Radon Risk (Zone 1)
#45
of 50 States
0%
ZIPs Rated A or B
38%
ZIPs with Violations
C
Iowa average: 63/100 - ranked #45 of 50 states. 10 points below the national average (73). 38% of ZIP codes have recorded violations.

Across Iowa, EPA compliance figures show a notable spread - elevated violation counts appear in both rural and suburban utility districts, not isolated to a single geographic pocket, and the state's aggregate safety grade sits low in current reporting data.

Score Distribution

How Iowa's 1058 ZIP codes are distributed across safety grades.

0
A
0
B
91
C
22
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 Iowa

Highest Home Safety Scores in the state.

#ZIP CodeCityCountyScoreGrade
1 50007 AllemanPolk 67 C
2 50021 AnkenyPolk 67 C
3 50023 AnkenyPolk 67 C
4 50035 BondurantPolk 67 C
5 50054 ColfaxPolk 67 C
6 50073 ElkhartPolk 67 C
7 50226 Polk CityPolk 67 C
8 50243 SheldahlPolk 67 C
9 50265 West Des MoinesPolk 67 C
10 50309 Des MoinesPolk 67 C

10 Lowest-Scoring ZIP Codes in Iowa

#ZIP CodeCityCountyScoreGradeViolations
1 52722 BettendorfScott 45 D 15
2 52726 Blue GrassScott 48 D 4
3 52753 Le ClaireScott 49 D 2
4 51108 Sioux CityWoodbury 49 D 2
5 51106 Sioux CityWoodbury 49 D 2
6 51105 Sioux CityWoodbury 49 D 2
7 51104 Sioux CityWoodbury 49 D 2
8 51103 Sioux CityWoodbury 49 D 2
9 51101 Sioux CityWoodbury 49 D 2
10 50701 WaterlooBlack Hawk 49 D 2

County Rankings

Water quality breakdown by county. 99 counties with data in Iowa.

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
19001 N/A N/A 5 N/A N/A
19003 N/A N/A 4 N/A N/A
19005 N/A N/A 6 N/A N/A
19007 N/A N/A 9 N/A N/A
19009 N/A N/A 6 N/A N/A
19011 N/A N/A 15 N/A N/A
19013 58 C 15 50613 (67) 50701 (49)
19015 N/A N/A 9 N/A N/A
19017 63 C 7 50622 (67) 50677 (49)
19019 N/A N/A 9 N/A N/A
19021 N/A N/A 9 N/A N/A
19023 N/A N/A 12 N/A N/A
19025 N/A N/A 9 N/A N/A
19027 N/A N/A 13 N/A N/A
19029 N/A N/A 8 N/A N/A
19031 N/A N/A 7 N/A N/A
19033 N/A N/A 11 N/A N/A
19035 N/A N/A 8 N/A N/A
19037 N/A N/A 7 N/A N/A
19039 N/A N/A 3 N/A N/A
19041 N/A N/A 9 N/A N/A
19043 N/A N/A 17 N/A N/A
19045 61 C 18 52730 (67) 52732 (50)
19047 N/A N/A 11 N/A N/A
19049 N/A N/A 14 N/A N/A
19051 N/A N/A 5 N/A N/A
19053 N/A N/A 8 N/A N/A
19055 N/A N/A 9 N/A N/A
19057 N/A N/A 7 N/A N/A
19059 N/A N/A 7 N/A N/A
19061 N/A N/A 15 N/A N/A
19063 N/A N/A 5 N/A N/A
19065 N/A N/A 14 N/A N/A
19067 N/A N/A 6 N/A N/A
19069 N/A N/A 9 N/A N/A
19071 N/A N/A 9 N/A N/A
19073 N/A N/A 8 N/A N/A
19075 N/A N/A 9 N/A N/A
19077 N/A N/A 10 N/A N/A
19079 N/A N/A 9 N/A N/A
19081 N/A N/A 8 N/A N/A
19083 N/A N/A 13 N/A N/A
19085 N/A N/A 10 N/A N/A
19087 N/A N/A 10 N/A N/A
19089 N/A N/A 6 N/A N/A
19091 N/A N/A 11 N/A N/A
19093 N/A N/A 5 N/A N/A
19095 N/A N/A 13 N/A N/A
19097 N/A N/A 14 N/A N/A
19099 N/A N/A 12 N/A N/A
19101 N/A N/A 7 N/A N/A
19103 64 C 13 52241 (67) 52240 (57)
19105 N/A N/A 10 N/A N/A
19107 N/A N/A 15 N/A N/A
19109 N/A N/A 12 N/A N/A
19111 N/A N/A 11 N/A N/A
19113 66 C 32 52227 (67) 52411 (55)
19115 N/A N/A 9 N/A N/A
19117 N/A N/A 5 N/A N/A
19119 N/A N/A 8 N/A N/A
19121 N/A N/A 7 N/A N/A
19123 N/A N/A 11 N/A N/A
19125 N/A N/A 11 N/A N/A
19127 N/A N/A 13 N/A N/A
19129 N/A N/A 7 N/A N/A
19131 N/A N/A 9 N/A N/A
19133 N/A N/A 10 N/A N/A
19135 N/A N/A 3 N/A N/A
19137 66 C 6 51566 (66) 51566 (66)
19139 61 C 10 52776 (67) 52761 (50)
19141 N/A N/A 8 N/A N/A
19143 N/A N/A 5 N/A N/A
19145 N/A N/A 12 N/A N/A
19147 67 C 8 50536 (67) 50536 (67)
19149 N/A N/A 8 N/A N/A
19151 N/A N/A 8 N/A N/A
19153 66 C 79 50007 (67) 50322 (63)
19155 66 C 19 51501 (67) 51510 (61)
19157 N/A N/A 8 N/A N/A
19159 N/A N/A 7 N/A N/A
19161 N/A N/A 9 N/A N/A
19163 51 D 22 52748 (66) 52722 (45)
19165 N/A N/A 10 N/A N/A
19167 N/A N/A 13 N/A N/A
19169 N/A N/A 18 N/A N/A
19171 N/A N/A 13 N/A N/A
19173 N/A N/A 7 N/A N/A
19175 N/A N/A 7 N/A N/A
19177 67 C 10 52535 (67) 52651 (67)
19179 N/A N/A 6 N/A N/A
19181 N/A N/A 14 N/A N/A
19183 N/A N/A 7 N/A N/A
19185 N/A N/A 8 N/A N/A
19187 67 C 14 50523 (67) 50501 (64)
19189 N/A N/A 7 N/A N/A
19191 N/A N/A 9 N/A N/A
19193 51 D 24 51054 (66) 51108 (49)
19195 N/A N/A 7 N/A N/A
19197 N/A N/A 9 N/A N/A

Most Common Contaminants in Iowa

Contaminant / RuleCategoryZIPs AffectedViolationsHealth Risk
Consumer Confidence Report Rule Reporting 63 96 Yes
Haloacetic Acids (HAA5) Disinfection Byproducts 45 58 Yes
Lead and Copper Rule Treatment Technique 42 75 No
Total Trihalomethanes (TTHM) Disinfection Byproducts 41 46 No
Copper Inorganic 38 40 Yes
Lead Inorganic 28 35 Yes
Surface Water Treatment Rule Treatment Technique 25 42 No
Stage 1 DBP Rule Treatment Technique 24 34 No

Overview

We track multi-source home safety signals for 1058 ZIP records across Iowa. Home Safety Score model 4.0.0 is published for 113 scored records; missing required evidence suppresses the score.

The EPA snapshots used for this build directly map water systems to 445 ZIP records, covering 278 community water systems that serve approximately 2,283,326 people.

171 of 445 ZIP codes with a reported violation count in the available EPA record (38%) have recorded EPA violations. 32 health-based violations appear in the available health breakdown.

Plumbing Regulations

Iowa 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 Iowa regulations →

Areas with Most Violations

ZIP Code City Home Safety Grade Violations Health-Based System
52411 Cedar Rapids C 30 0 Cedar Rapids Water Department
52240 Iowa City C 20 0 Iowa City Water Department
50112 Grinnell — 18 13 Grinnell Water Department
52722 Bettendorf D 15 0 Iowa-american Wtr Company-davenport
51510 Carter Lake C 10 0 Carter Lake Water District
52245 Iowa City C 10 0 Iowa City Water Department
50003 Adel — 9 0 Xenia Rwd (des Moines)
52327 Riverside — 9 0 Kalona Water Department
50069 De Soto — 8 0 Xenia Rwd (des Moines)
50261 Van Meter — 8 0 Xenia Rwd (des Moines)

Areas with No Violations

ZIP Code City Home Safety Grade System Population
50002 Adair — Xenia Rwd (des Moines) 12,860
50007 Alleman C Des Moines Water Works 246,055
50008 Allerton — Rathbun Regional Water Assn (rathbun) 33,000
50021 Ankeny C City of Ankeny, 76,207
50022 Atlantic — Atlantic Municipal Utilities 7,252
50023 Ankeny C City of Ankeny, 76,207
50025 Audubon — Audubon Water Supply 2,053
50026 Bagley — Xenia Rwd (des Moines) 12,860
50034 Blairsburg — Xenia Rwd (des Moines) 12,860
50035 Bondurant C Des Moines Water Works 246,055

Home Safety Score

Average Home Safety Score for Iowa: C (63/100) across 113 scored of 1058 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): 0.0025 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 445 ZIP codes with known status exceed the EPA lead action level

Radon Risk

  • High risk (Zone 1): 1056 ZIP codes (100%)
  • Moderate risk (Zone 2): 0 ZIP codes
  • Low risk (Zone 3): 0 ZIP codes

ZIP Code Reports for Iowa

Largest Communities

ZIP Code City Population Safety Grade Violations
50263 Waukee 432,613 — 8
50325 Clive 417,719 C 0
50265 West Des Moines 365,619 C 0
50266 West Des Moines 364,697 — 0
50323 Urbandale 356,620 C 0
50169 Mitchellville 356,040 — 5
50226 Polk City 348,640 C 0
50131 Johnston 347,226 C 1
50261 Van Meter 334,908 — 8
50061 Cumming 334,348 — 0
50244 Slater 333,333 — 3
50021 Ankeny 333,012 C 0
50035 Bondurant 332,048 C 0
50073 Elkhart 331,655 C 0
50161 Maxwell 331,655 — 0
50046 Cambridge 331,481 — 0
50023 Ankeny 323,887 C 0
50313 Des Moines 322,587 C 0
50312 Des Moines 320,014 C 0
50321 Des Moines 320,014 C 0

Lowest Published Home Safety Scores

ZIP Code City Score Grade Violations
52722 Bettendorf 45 D 15
52726 Blue Grass 48 D 4
50677 Waverly 49 D 3
50701 Waterloo 49 D 2
51101 Sioux City 49 D 2

Highest Published Home Safety Scores

ZIP Code City Score Grade Violations
50007 Alleman 67 C 0
50021 Ankeny 67 C 0
50023 Ankeny 67 C 0
50035 Bondurant 67 C 0
50054 Colfax 67 C 0

All 1058 ZIP Codes in Iowa

Data Sources

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

Largest water systems in Iowa

The 12 biggest community water systems serving Iowa, of 278 total.

Show all 12 water systems

Systems with the most violations in Iowa

12 systems in Iowa with the most recorded EPA violations.

Frequently Asked Questions

Is the water safe to drink in Iowa?

Iowa has 278 community water systems serving 2,283,326 people across 1058 ZIP codes. There are 255 recorded violations, including 32 health-based. 171 of 1058 ZIP codes have at least one violation.

What plumbing code does Iowa follow?

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

What is the radon risk in Iowa?

100% of ZIP codes in Iowa fall in EPA Radon Zone 1 (highest risk).

How to cite this page

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

Page version: August 2026.

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