Data source: ZipCheckup Home Safety Score registry; EPA SDWIS; EPA radon; EPA AirNow

ZipCheckup compares 49 ZIP codes across Dayton, OH. The area averages a grade D (52/100); water systems associated with 13 ZIP codes have recorded EPA violations.

Home-safety conditions vary across Dayton, OH. We compared 49 ZIP codes using the current versioned Home Safety Score. Water compliance remains one component alongside PFAS screening, radon, and annual air quality.

City Overview: Grade D (52/100)

Grade	Neighborhoods	%
A	0	0%
B	0	0%
C	4	16%
D	21	84%
F	0	0%

Neighborhood Rankings

Mapped ZIP codes in Dayton ranked by Home Safety Score:

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	45430	65	C	1	No data
2	45435	65	C	1	0.0027 mg/L
3	45434	64	C	2	0.0027 mg/L
4	45449	64	C	5	0.0019 mg/L
5	45402	50	D	0	Above EPA action level
6	45403	50	D	0	Above EPA action level
7	45404	50	D	0	Above EPA action level
8	45405	50	D	0	Above EPA action level
9	45406	50	D	0	Above EPA action level
10	45409	50	D	0	Above EPA action level
11	45410	50	D	0	Above EPA action level
12	45414	50	D	0	Above EPA action level
13	45415	50	D	1	Above EPA action level
14	45416	50	D	0	Above EPA action level
15	45419	50	D	0	Above EPA action level
16	45420	50	D	0	Above EPA action level
17	45428	50	D	0	Above EPA action level
18	45433	50	D	0	0.0021 mg/L
19	45439	50	D	0	Above EPA action level
20	45424	49	D	1	Above EPA action level
21	45431	49	D	1	Above EPA action level
22	45432	49	D	1	Above EPA action level
23	45417	46	D	5	Above EPA action level
24	45440	46	D	4	0.0035 mg/L
25	45426	45	D	6	Above EPA action level
26	45400	—	—	—	No data
27	45401	—	—	—	No data
28	45408	—	—	—	No data
29	45412	—	—	—	No data
30	45413	—	—	—	No data
31	45418	—	—	—	No data
32	45422	—	—	—	No data
33	45423	—	—	—	No data
34	45427	—	—	—	No data
35	45429	—	—	0	No data
36	45437	—	—	—	No data
37	45441	—	—	—	No data
38	45448	—	—	—	No data
39	45454	—	—	—	No data
40	45458	—	—	3	0.0044 mg/L
41	45459	—	—	3	0.0035 mg/L
42	45463	—	—	—	No data
43	45469	—	—	0	Above EPA action level
44	45470	—	—	—	No data
45	45475	—	—	—	No data
46	45479	—	—	—	No data
47	45481	—	—	—	No data
48	45482	—	—	—	No data
49	45490	—	—	—	No data

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

• 5 neighborhoods score better than county average
• 20 neighborhoods score worse than county average

EPA Violations

• 19 total violations since 2021 across the water systems mapped to Dayton ZIP codes (each system counted once; includes small systems beyond the city utility)
• 2 health-based violation records in the available EPA data
• 13 of 29 directly mapped ZIP records are mapped to water systems with recorded violations
• 20 of 29 ZIP records with known lead status are served by a system whose 90th-percentile lead result exceeded the EPA action level

Top Contaminants

Contaminant	Violations	ZIPs
Consumer Confidence Rule	21	12
Lead and Copper Rule Revisions	12	6
Arsenic	1	1

Frequently Asked Questions

Which ZIP code in Dayton has the highest home safety score?

ZIP code 45430 has the highest safety score among scored ZIP codes in Dayton at 65/100 (grade C). Check the full report for details.

Is Dayton water safe to drink?

The Home Safety Score is not a drinking-water grade. Across 29 directly mapped ZIP records, 19 EPA violations are recorded; 20 of 29 records with known lead status exceed the action level. Check the specific ZIP and serving system before drawing a property-level conclusion.

Related Pages

• Dayton, OH city page
• Ohio state rankings
• All Ohio alerts

Data Sources

• EPA SDWIS
• U.S. Census Bureau

Reporting periods vary by source; the page metadata identifies this materialization.