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

ZipCheckup compares 62 ZIP codes across Seattle, WA. The area averages a grade A (100/100); water systems associated with 4 ZIP codes have recorded EPA violations.

Home-safety conditions vary across Seattle, WA. We compared 62 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 A (100/100)

Grade	Neighborhoods	%
A	34	100%
B	0	0%
C	0	0%
D	0	0%
F	0	0%

Neighborhood Rankings

Mapped ZIP codes in Seattle ranked by Home Safety Score:

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	98101	100	A	0	0.0016 mg/L
2	98102	100	A	0	0.0016 mg/L
3	98103	100	A	0	0.0016 mg/L
4	98104	100	A	0	0.0016 mg/L
5	98105	100	A	0	0.0016 mg/L
6	98106	100	A	0	0.0016 mg/L
7	98107	100	A	0	0.0016 mg/L
8	98108	100	A	0	0.0016 mg/L
9	98109	100	A	0	0.0016 mg/L
10	98112	100	A	0	0.0016 mg/L
11	98115	100	A	0	0.0016 mg/L
12	98116	100	A	0	0.0016 mg/L
13	98117	100	A	0	0.0016 mg/L
14	98118	100	A	0	0.0016 mg/L
15	98119	100	A	0	0.0016 mg/L
16	98121	100	A	0	0.0016 mg/L
17	98122	100	A	0	0.0016 mg/L
18	98125	100	A	0	0.0016 mg/L
19	98126	100	A	0	0.0016 mg/L
20	98133	100	A	0	0.0016 mg/L
21	98134	100	A	0	0.0016 mg/L
22	98136	100	A	0	0.0016 mg/L
23	98144	100	A	0	0.0016 mg/L
24	98146	100	A	0	0.0016 mg/L
25	98155	100	A	0	Above EPA action level
26	98158	100	A	0	0.0014 mg/L
27	98166	100	A	0	0.0016 mg/L
28	98168	100	A	1	0.0016 mg/L
29	98177	100	A	0	0.0016 mg/L
30	98178	100	A	0	0.0019 mg/L
31	98199	100	A	0	0.0016 mg/L
32	98148	99	A	1	0.0014 mg/L
33	98188	99	A	3	0.0014 mg/L
34	98198	99	A	3	0.0033 mg/L
35	98111	—	—	—	No data
36	98113	—	—	—	No data
37	98114	—	—	—	No data
38	98124	—	—	—	No data
39	98127	—	—	—	No data
40	98129	—	—	—	No data
41	98131	—	—	—	No data
42	98132	—	—	—	No data
43	98138	—	—	—	No data
44	98139	—	—	—	No data
45	98141	—	—	—	No data
46	98145	—	—	—	No data
47	98154	—	—	—	No data
48	98160	—	—	—	No data
49	98161	—	—	—	No data
50	98164	—	—	—	No data
51	98165	—	—	—	No data
52	98170	—	—	—	No data
53	98171	—	—	—	No data
54	98174	—	—	0	0.0016 mg/L
55	98175	—	—	—	No data
56	98181	—	—	—	No data
57	98185	—	—	—	No data
58	98189	—	—	—	No data
59	98190	—	—	—	No data
60	98191	—	—	—	No data
61	98194	—	—	—	No data
62	98195	—	—	0	0.0016 mg/L

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

• 34 neighborhoods score better than county average
• 0 neighborhoods score worse than county average

EPA Violations

• 4 total violations since 2021 across the water systems mapped to Seattle ZIP codes (each system counted once; includes small systems beyond the city utility)
• 1 health-based violation records in the available EPA data
• 4 of 36 directly mapped ZIP records are mapped to water systems with recorded violations
• 1 of 36 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	5	3
Revised Total Coliform Rule	3	3

Frequently Asked Questions

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

ZIP code 98101 has the highest safety score among scored ZIP codes in Seattle at 100/100 (grade A). Check the full report for details.

Is Seattle water safe to drink?

The Home Safety Score is not a drinking-water grade. Across 36 directly mapped ZIP records, 4 EPA violations are recorded; 1 of 36 records with known lead status exceed the action level. Check the specific ZIP and serving system before drawing a property-level conclusion.

Related Pages

• Seattle, WA city page
• Washington state rankings
• All Washington alerts

Data Sources

• EPA SDWIS
• U.S. Census Bureau

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