Worst Infrastructure: Louisiana — 2026 Rankings

Out of 640 ZIP codes with infrastructure data in Louisiana, 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	640
Highest risk	67%
Median risk	35%
Average risk	35%
State	Louisiana

Top 100 Highest Risk ZIP Codes

Rank	ZIP Code	City	State	Pipe Failure Risk	Risk Level	Safety Score
1	70116	New Orleans	LA	67%	Very High	64/100
2	70115	New Orleans	LA	65%	Very High	64/100
3	70118	New Orleans	LA	65%	Very High	64/100
4	70119	New Orleans	LA	63%	Very High	64/100
5	70558	Milton	LA	63%	Very High	84/100
6	70117	New Orleans	LA	62%	Very High	64/100
7	70125	New Orleans	LA	61%	Very High	64/100
8	70130	New Orleans	LA	61%	Very High	64/100
9	70112	New Orleans	LA	60%	High	64/100
10	70113	New Orleans	LA	59%	High	64/100
11	70121	New Orleans	LA	59%	High	64/100
12	71101	Shreveport	LA	59%	High	65/100
13	71103	Shreveport	LA	59%	High	65/100
14	71104	Shreveport	LA	59%	High	55/100
15	71301	Alexandria	LA	58%	High	55/100
16	70114	New Orleans	LA	57%	High	64/100
17	70122	New Orleans	LA	56%	High	64/100
18	71109	Shreveport	LA	56%	High	60/100
19	71330	Echo	LA	56%	High	83/100
20	71108	Shreveport	LA	55%	High	60/100
21	71357	Newellton	LA	55%	High	60/100
22	71483	Winnfield	LA	55%	High	60/100
23	70131	New Orleans	LA	54%	High	64/100
24	71064	Plain Dealing	LA	54%	High	69/100
25	71302	Alexandria	LA	54%	High	55/100
26	70126	New Orleans	LA	53%	High	64/100
27	70127	New Orleans	LA	53%	High	64/100
28	70538	Franklin	LA	53%	High	50/100
29	71068	Ringgold	LA	53%	High	78/100
30	71472	Sieper	LA	53%	High	50/100
31	70541	Grand Coteau	LA	52%	High	78/100
32	71016	Castor	LA	52%	High	46/100
33	71223	Bonita	LA	52%	High	65/100
34	71326	Clayton	LA	52%	High	50/100
35	71410	Calvin	LA	52%	High	70/100
36	70124	New Orleans	LA	51%	High	64/100
37	70340	Amelia	LA	51%	High	68/100
38	71105	Shreveport	LA	51%	High	55/100
39	71201	Monroe	LA	51%	High	51/100
40	71202	Monroe	LA	51%	High	51/100
41	71222	Bernice	LA	51%	High	65/100
42	71247	Hodge	LA	51%	High	82/100
43	70128	New Orleans	LA	50%	High	64/100
44	71040	Homer	LA	50%	High	70/100
45	71052	Mansfield	LA	50%	High	65/100
46	71106	Shreveport	LA	50%	High	55/100
47	71235	Dubach	LA	50%	High	70/100
48	71334	Ferriday	LA	50%	High	55/100
49	71340	Harrisonburg	LA	50%	High	60/100
50	71463	Oakdale	LA	50%	High	72/100
51	71479	Tullos	LA	50%	High	66/100
52	70123	New Orleans	LA	49%	High	64/100
53	71008	Bienville	LA	49%	High	70/100
54	71019	Coushatta	LA	49%	High	65/100
55	71069	Rodessa	LA	49%	High	90/100
56	71118	Shreveport	LA	49%	High	55/100
57	71269	Rayville	LA	49%	High	55/100
58	71282	Tallulah	LA	49%	High	47/100
59	71322	Bunkie	LA	49%	High	66/100
60	71336	Gilbert	LA	49%	High	65/100
61	71406	Belmont	LA	49%	High	66/100
62	71414	Clarence	LA	49%	High	52/100
63	71455	Mora	LA	49%	High	50/100
64	71473	Sikes	LA	49%	High	66/100
65	70129	New Orleans	LA	48%	High	64/100
66	70554	Mamou	LA	48%	High	64/100
67	70764	Plaquemine	LA	48%	High	60/100
68	71021	Cullen	LA	48%	High	84/100
69	71065	Pleasant Hill	LA	48%	High	66/100
70	71070	Saline	LA	48%	High	65/100
71	71107	Shreveport	LA	48%	High	60/100
72	71112	Bossier City	LA	48%	High	55/100
73	71119	Shreveport	LA	48%	High	60/100
74	71220	Bastrop	LA	48%	High	67/100
75	71415	Clarks	LA	48%	High	91/100
76	71432	Georgetown	LA	48%	High	65/100
77	70601	Lake Charles	LA	47%	High	75/100
78	71023	Doyline	LA	47%	High	72/100
79	71048	Lisbon	LA	47%	High	94/100
80	71129	Shreveport	LA	47%	High	60/100
81	71260	Marion	LA	47%	High	65/100
82	71325	Cheneyville	LA	47%	High	88/100
83	71411	Campti	LA	47%	High	46/100
84	71452	Melrose	LA	47%	High	60/100
85	71486	Zwolle	LA	47%	High	70/100
86	70513	Avery Island	LA	46%	High	60/100
87	70531	Egan	LA	46%	High	67/100
88	71038	Haynesville	LA	46%	High	92/100
89	71055	Minden	LA	46%	High	88/100
90	71071	Sarepta	LA	46%	High	87/100
91	71082	Vivian	LA	46%	High	86/100
92	71254	Lake Providence	LA	46%	High	74/100
93	71286	Transylvania	LA	46%	High	71/100
94	71303	Alexandria	LA	46%	High	55/100
95	71356	Morrow	LA	46%	High	87/100
96	71368	Sicily Island	LA	46%	High	75/100
97	71419	Converse	LA	46%	High	70/100
98	70427	Bogalusa	LA	45%	High	75/100
99	70528	Delcambre	LA	45%	High	76/100
100	70542	Gueydan	LA	45%	High	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.