Worst Infrastructure: Los Angeles Metro — 2026

Out of 160 ZIP codes with infrastructure data in the Los Angeles metro area, these areas face the highest estimated risk of water pipe failure based on infrastructure age, funding gaps, and violation history.

Statistic	Value
ZIP codes ranked	160
Highest risk	56%
Median risk	39%
Average risk	37%

Top 100 Highest Risk ZIP Codes

Rank	ZIP Code	City	State	Pipe Failure Risk	Risk Level	Safety Score
1	90073	Los Angeles	CA	56%	High	78/100
2	90806	Long Beach	CA	53%	High	70/100
3	90807	Long Beach	CA	53%	High	70/100
4	90810	Long Beach	CA	53%	High	70/100
5	90814	Long Beach	CA	53%	High	70/100
6	90803	Long Beach	CA	52%	High	65/100
7	90808	Long Beach	CA	52%	High	70/100
8	90805	Long Beach	CA	51%	High	65/100
9	90062	Los Angeles	CA	50%	High	79/100
10	90043	Los Angeles	CA	49%	High	74/100
11	90047	Los Angeles	CA	49%	High	69/100
12	90813	Long Beach	CA	49%	High	70/100
13	90815	Long Beach	CA	49%	High	70/100
14	90018	Los Angeles	CA	48%	High	79/100
15	90019	Los Angeles	CA	48%	High	69/100
16	90021	Los Angeles	CA	48%	High	78/100
17	90023	Los Angeles	CA	48%	High	78/100
18	90063	Los Angeles	CA	48%	High	79/100
19	90804	Long Beach	CA	48%	High	70/100
20	90001	Los Angeles	CA	47%	High	78/100
21	90016	Los Angeles	CA	47%	High	69/100
22	90022	Los Angeles	CA	47%	High	79/100
23	90026	Los Angeles	CA	47%	High	79/100
24	90031	Los Angeles	CA	47%	High	79/100
25	90039	Los Angeles	CA	47%	High	74/100
26	90041	Los Angeles	CA	47%	High	74/100
27	90802	Long Beach	CA	47%	High	75/100
28	90008	Los Angeles	CA	46%	High	74/100
29	90027	Los Angeles	CA	46%	High	74/100
30	90029	Los Angeles	CA	46%	High	74/100
31	90032	Los Angeles	CA	46%	High	79/100
32	90037	Los Angeles	CA	46%	High	78/100
33	90042	Los Angeles	CA	46%	High	74/100
34	90058	Los Angeles	CA	46%	High	78/100
35	90065	Los Angeles	CA	46%	High	74/100
36	90068	Los Angeles	CA	46%	High	69/100
37	90002	Los Angeles	CA	45%	High	78/100
38	90003	Los Angeles	CA	45%	High	79/100
39	90004	Los Angeles	CA	45%	High	74/100
40	90006	Los Angeles	CA	45%	High	79/100
41	90011	Los Angeles	CA	45%	High	78/100
42	90013	Los Angeles	CA	45%	High	79/100
43	90014	Los Angeles	CA	45%	High	74/100
44	90033	Los Angeles	CA	45%	High	79/100
45	90036	Los Angeles	CA	45%	High	74/100
46	90044	Los Angeles	CA	45%	High	79/100
47	90007	Los Angeles	CA	44%	High	79/100
48	90035	Los Angeles	CA	44%	High	69/100
49	90040	Los Angeles	CA	44%	High	79/100
50	90048	Los Angeles	CA	44%	High	69/100
51	91201	Glendale	CA	44%	High	83/100
52	90005	Los Angeles	CA	43%	High	74/100
53	90056	Los Angeles	CA	43%	High	79/100
54	90059	Los Angeles	CA	43%	High	79/100
55	90061	Los Angeles	CA	43%	High	79/100
56	90071	Los Angeles	CA	43%	High	79/100
57	91207	Glendale	CA	43%	High	83/100
58	92706	Santa Ana	CA	43%	High	82/100
59	92707	Santa Ana	CA	43%	High	82/100
60	90038	Los Angeles	CA	42%	High	79/100
61	90046	Los Angeles	CA	42%	High	64/100
62	90057	Los Angeles	CA	42%	High	78/100
63	90064	Los Angeles	CA	42%	High	74/100
64	91205	Glendale	CA	42%	High	83/100
65	92701	Santa Ana	CA	42%	High	87/100
66	90020	Los Angeles	CA	41%	High	79/100
67	90034	Los Angeles	CA	41%	High	74/100
68	90066	Los Angeles	CA	41%	High	74/100
69	90077	Los Angeles	CA	41%	High	64/100
70	91202	Glendale	CA	41%	High	83/100
71	91208	Glendale	CA	41%	High	78/100
72	92703	Santa Ana	CA	41%	High	77/100
73	92802	Anaheim	CA	41%	High	94/100
74	92804	Anaheim	CA	41%	High	89/100
75	90045	Los Angeles	CA	40%	Moderate	79/100
76	90049	Los Angeles	CA	40%	Moderate	64/100
77	91206	Glendale	CA	40%	Moderate	78/100
78	92704	Santa Ana	CA	40%	Moderate	72/100
79	92801	Anaheim	CA	40%	Moderate	94/100
80	92807	Anaheim	CA	40%	Moderate	89/100
81	90024	Los Angeles	CA	39%	Moderate	74/100
82	90028	Los Angeles	CA	39%	Moderate	79/100
83	92705	Santa Ana	CA	39%	Moderate	82/100
84	92806	Anaheim	CA	39%	Moderate	94/100
85	90025	Los Angeles	CA	38%	Moderate	74/100
86	90067	Los Angeles	CA	37%	Moderate	74/100
87	91204	Glendale	CA	37%	Moderate	83/100
88	92805	Anaheim	CA	36%	Moderate	94/100
89	90017	Los Angeles	CA	34%	Moderate	79/100
90	90801	Long Beach	CA	31%	Moderate	75/100
91	90809	Long Beach	CA	31%	Moderate	73/100
92	90822	Long Beach	CA	31%	Moderate	73/100
93	90831	Long Beach	CA	31%	Moderate	73/100
94	90832	Long Beach	CA	31%	Moderate	73/100
95	90833	Long Beach	CA	31%	Moderate	73/100
96	90834	Long Beach	CA	31%	Moderate	73/100
97	90835	Long Beach	CA	31%	Moderate	73/100
98	90840	Long Beach	CA	31%	Moderate	73/100
99	90842	Long Beach	CA	31%	Moderate	73/100
100	90844	Long Beach	CA	31%	Moderate	73/100

Methodology

Infrastructure risk rankings combine four data sources, each weighted equally (25%): (1) EPA Drinking Water Infrastructure Needs Survey (DWINS 2023) — state-level 20-year funding gap per capita for pipe replacement, treatment, and storage; (2) Census ACS housing vintage — percentage of homes built before 1980, when lead solder and galvanized pipes were common; (3) EPA SDWIS violation and enforcement data — system-level compliance history; (4) Lead and Copper Rule indicators — service line material inventories and 90th percentile lead testing results. The combined score is normalized to a 0-100% probability scale.

Data sources: EPA DWINS 2023, Census ACS, EPA SDWIS, Lead and Copper Rule data. Last updated: 2026-06-04.

Frequently Asked Questions

What does pipe failure probability mean?

Pipe failure probability estimates the likelihood of water main breaks, lead contamination from corroded pipes, or service disruptions based on infrastructure age, state funding gaps, violation history, and lead indicators. It is not a prediction of imminent failure, but a risk assessment based on known factors.

How is infrastructure risk calculated?

The risk score combines four equally weighted factors: state-level infrastructure funding gap per capita (from EPA DWINS 2023), housing vintage (Census ACS pre-1980 housing percentage), water system violation and enforcement history (EPA SDWIS), and lead exposure indicators (service line probability and testing results).

What can homeowners do about aging infrastructure?

Test your tap water annually, especially for lead. Check if your home has a lead service line through your water utility. Consider a whole-house water filter (NSF/ANSI 53 certified). Review your water system Consumer Confidence Report for violation history.

Does high risk mean my water is unsafe right now?

Not necessarily. Infrastructure risk indicates long-term vulnerability, not current contamination. However, areas with aging pipes and high violation counts have a statistically higher chance of water quality issues. Regular testing is the best way to verify your water safety.