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

ZipCheckup compares 54 ZIP codes across Tucson, AZ. The area averages a grade C (65/100); water systems associated with 37 ZIP codes have recorded EPA violations.

Home-safety conditions vary across Tucson, AZ. We compared 54 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 C (65/100)

Grade	Neighborhoods	%
A	0	0%
B	16	52%
C	11	35%
D	4	13%
F	0	0%

Neighborhood Rankings

Mapped ZIP codes in Tucson ranked by Home Safety Score:

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	85701	73	B	33	0.0006 mg/L
2	85711	73	B	33	0.0006 mg/L
3	85713	73	B	33	0.0006 mg/L
4	85735	73	B	33	0.0006 mg/L
5	85746	73	B	33	0.0006 mg/L
6	85748	73	B	33	0.0006 mg/L
7	85749	73	B	33	0.0006 mg/L
8	85707	71	B	12	No data
9	85714	71	B	37	0.0006 mg/L
10	85715	71	B	39	0.0026 mg/L
11	85716	71	B	37	0.0014 mg/L
12	85739	71	B	12	0.0010 mg/L
13	85750	71	B	39	0.0026 mg/L
14	85710	70	B	35	0.0006 mg/L
15	85712	70	B	36	0.0006 mg/L
16	85736	70	B	42	0.0110 mg/L
17	85719	69	C	45	0.0020 mg/L
18	85755	69	C	41	0.0010 mg/L
19	85757	69	C	43	0.0006 mg/L
20	85706	68	C	42	0.0041 mg/L
21	85747	66	C	47	0.0081 mg/L
22	85756	60	C	71	0.0006 mg/L
23	85730	59	C	62	Above EPA action level
24	85704	58	C	129	0.0079 mg/L
25	85718	58	C	100	0.0006 mg/L
26	85737	58	C	76	0.0010 mg/L
27	85745	58	C	96	0.0006 mg/L
28	85743	52	D	44	0.0006 mg/L
29	85705	42	D	109	0.0030 mg/L
30	85741	42	D	109	0.0006 mg/L
31	85742	42	D	101	0.0010 mg/L
32	85702	—	—	—	No data
33	85703	—	—	—	No data
34	85708	—	—	12	No data
35	85709	—	—	33	0.0006 mg/L
36	85717	—	—	—	No data
37	85720	—	—	—	No data
38	85721	—	—	—	No data
39	85722	—	—	—	No data
40	85723	—	—	33	0.0006 mg/L
41	85724	—	—	33	0.0006 mg/L
42	85725	—	—	—	No data
43	85726	—	—	33	0.0006 mg/L
44	85728	—	—	—	No data
45	85731	—	—	—	No data
46	85732	—	—	—	No data
47	85733	—	—	—	No data
48	85734	—	—	2	No data
49	85740	—	—	—	No data
50	85744	—	—	—	No data
51	85751	—	—	—	No data
52	85752	—	—	—	No data
53	85754	—	—	—	No data
54	85775	—	—	—	No data

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

• 21 neighborhoods score better than county average
• 10 neighborhoods score worse than county average

EPA Violations

• 361 total violations since 2021 across the water systems mapped to Tucson ZIP codes (each system counted once; includes small systems beyond the city utility)
• 13 health-based violation records in the available EPA data
• 37 of 37 directly mapped ZIP records are mapped to water systems with recorded violations
• 1 of 37 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
Nitrate	71	35
Revised Total Coliform Rule	64	21
1,2,4-Trichlorobenzene	51	33
cis-1,2-Dichloroethylene	51	33
Xylenes, Total	51	33

Frequently Asked Questions

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

ZIP code 85701 has the highest safety score among scored ZIP codes in Tucson at 73/100 (grade B). Check the full report for details.

Is Tucson water safe to drink?

The Home Safety Score is not a drinking-water grade. Across 37 directly mapped ZIP records, 361 EPA violations are recorded; 1 of 37 records with known lead status exceed the action level. Check the specific ZIP and serving system before drawing a property-level conclusion.

Related Pages

• Tucson, AZ city page
• Arizona state rankings
• All Arizona alerts

Data Sources

• EPA SDWIS
• U.S. Census Bureau

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