Data source: EPA SDWIS Last verified: 2026-07-19

ZipCheckup compares 66 ZIP codes across Louisville, KY. The area averages a grade C (65/100); 0 ZIP codes carry recorded EPA violations.

Water quality varies significantly across Louisville, KY. We analyzed 66 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.

City Overview: Grade C (65/100)

Grade	Neighborhoods	%
A	0	0%
B	6	9%
C	60	91%
D	0	0%
F	0	0%

Neighborhood Rankings

Every ZIP code in Louisville ranked by Home Safety Score:

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	40201	83	B	0	0.0011 mg/L
2	40203	70	B	0	0.0011 mg/L
3	40210	70	B	0	0.0011 mg/L
4	40243	70	B	0	0.0011 mg/L
5	40251	70	B	0	0.0011 mg/L
6	40252	70	B	0	0.0011 mg/L
7	40221	66	C	0	0.0011 mg/L
8	40224	66	C	0	0.0011 mg/L
9	40225	66	C	0	0.0011 mg/L
10	40231	66	C	0	0.0011 mg/L
11	40232	66	C	0	0.0011 mg/L
12	40233	66	C	0	0.0011 mg/L
13	40250	66	C	0	0.0011 mg/L
14	40253	66	C	0	0.0011 mg/L
15	40255	66	C	0	0.0011 mg/L
16	40256	66	C	0	0.0011 mg/L
17	40257	66	C	0	0.0011 mg/L
18	40259	66	C	0	0.0011 mg/L
19	40261	66	C	0	0.0011 mg/L
20	40266	66	C	0	0.0011 mg/L
21	40268	66	C	0	0.0011 mg/L
22	40269	66	C	0	0.0011 mg/L
23	40270	66	C	0	0.0011 mg/L
24	40280	66	C	0	0.0011 mg/L
25	40281	66	C	0	0.0011 mg/L
26	40282	66	C	0	0.0011 mg/L
27	40283	66	C	0	0.0011 mg/L
28	40285	66	C	0	0.0011 mg/L
29	40287	66	C	0	0.0011 mg/L
30	40289	66	C	0	0.0011 mg/L
31	40290	66	C	0	0.0011 mg/L
32	40292	66	C	0	0.0011 mg/L
33	40293	66	C	0	0.0011 mg/L
34	40294	66	C	0	0.0011 mg/L
35	40295	66	C	0	0.0011 mg/L
36	40296	66	C	0	0.0011 mg/L
37	40297	66	C	0	0.0011 mg/L
38	40298	66	C	0	0.0011 mg/L
39	40202	65	C	0	0.0011 mg/L
40	40204	65	C	0	0.0011 mg/L
41	40208	65	C	0	0.0011 mg/L
42	40209	65	C	0	0.0011 mg/L
43	40211	65	C	0	0.0011 mg/L
44	40212	65	C	0	0.0011 mg/L
45	40215	65	C	0	0.0011 mg/L
46	40217	65	C	0	0.0011 mg/L
47	40223	65	C	0	0.0011 mg/L
48	40228	65	C	0	0.0011 mg/L
49	40229	65	C	0	0.0011 mg/L
50	40241	65	C	0	0.0011 mg/L
51	40242	65	C	0	0.0011 mg/L
52	40245	65	C	0	0.0011 mg/L
53	40291	65	C	0	0.0011 mg/L
54	40206	60	C	0	0.0011 mg/L
55	40220	60	C	0	0.0011 mg/L
56	40258	60	C	0	0.0011 mg/L
57	40272	60	C	0	0.0011 mg/L
58	40299	60	C	0	0.0011 mg/L
59	40205	55	C	0	0.0011 mg/L
60	40207	55	C	0	0.0011 mg/L
61	40213	55	C	0	0.0011 mg/L
62	40214	55	C	0	0.0011 mg/L
63	40216	55	C	0	0.0011 mg/L
64	40218	55	C	0	0.0011 mg/L
65	40219	55	C	0	0.0011 mg/L
66	40222	55	C	0	0.0011 mg/L

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

• 53 neighborhoods score better than county average
• 13 neighborhoods score worse than county average

Frequently Asked Questions

What is the safest neighborhood in Louisville?

ZIP code 40201 has the highest safety score in Louisville at 83/100 (grade B). Check the full report for details.

Is Louisville water safe to drink?

Louisville has an average water safety score of 65/100 (C). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.

Related Pages

• Louisville, KY city page
• Kentucky state rankings
• All Kentucky alerts

Data Sources

• EPA SDWIS
• U.S. Census Bureau

Updated daily.