2026 Rankings

Worst ZIP Codes for Lead in Water in New Mexico — 2026

Last updated: June 4, 2026

392 ZIP codes ranked by Lead (mg/L) #1: ZIP 87544 (Los Alamos, NM) — 770.0 ppb
Lead Violations Lowest Score Safest Flood Risk Energy Cost Radon PFAS Reliability EJ Index Homebuyer Risk CO & Gas Safest Gas Remediation Burden Unresolved Violations (by Utility) Water Equity (by Utility)

Out of 392 ZIP codes with data in New Mexico, these are the highest-ranked areas for lead (mg/l). See also: National Worst ZIP Codes for Lead in Water | All New Mexico Rankings

Statistic Value
ZIP codes ranked 392
Highest value 770.0 ppb
Median value 1.3 ppb
State New Mexico

Top 100 Worst ZIP Codes

Rank ZIP Code City State Lead (mg/L) Safety Score
1 87544 Los Alamos NM 770.0 ppb 74/100
2 87545 Los Alamos NM 770.0 ppb 72/100
3 87547 White Rock NM 770.0 ppb 63/100
4 87565 San Jose NM 600.0 ppb 51/100
5 87043 Placitas NM 170.0 ppb 73/100
6 87518 Cebolla NM 110.0 ppb 35/100
7 87820 Aragon NM 26.0 ppb 43/100
8 87532 Espanola NM 21.0 ppb 76/100
9 87533 Espanola NM 21.0 ppb 59/100
10 87015 Edgewood NM 20.0 ppb 65/100
11 87047 Sandia Park NM 20.0 ppb 69/100
12 87056 Stanley NM 20.0 ppb 40/100
13 87059 Tijeras NM 20.0 ppb 33/100
14 88049 Mimbres NM 15.0 ppb 79/100
15 88310 Alamogordo NM 15.0 ppb 68/100
16 88311 Alamogordo NM 15.0 ppb 78/100
17 87515 Canjilon NM 11.0 ppb 46/100
18 87553 Penasco NM 9.2 ppb 51/100
19 87519 Cerro NM 9.0 ppb 55/100
20 87554 Petaca NM 9.0 ppb 40/100
21 87579 Vadito NM 9.0 ppb 62/100
22 87581 Vallecitos NM 9.0 ppb 29/100
23 88323 Fort Stanton NM 9.0 ppb 82/100
24 87535 Glorieta NM 8.4 ppb 54/100
25 87552 Pecos NM 8.4 ppb 55/100
26 87024 Jemez Pueblo NM 8.0 ppb 83/100
27 87025 Jemez Springs NM 8.0 ppb 72/100
28 87723 Holman NM 8.0 ppb 59/100
29 88416 Conchas Dam NM 7.7 ppb 69/100
30 88421 Garita NM 7.7 ppb 40/100
31 88431 Newkirk NM 7.7 ppb 40/100
32 88439 Trementina NM 7.7 ppb 40/100
33 87722 Guadalupita NM 7.3 ppb 60/100
34 88312 Alto NM 6.1 ppb 79/100
35 87513 Arroyo Hondo NM 6.0 ppb 64/100
36 87732 Mora NM 6.0 ppb 62/100
37 88042 Hillsboro NM 6.0 ppb 77/100
38 88055 Redrock NM 6.0 ppb 53/100
39 88065 Tyrone NM 6.0 ppb 74/100
40 87710 Angel Fire NM 5.9 ppb 46/100
41 87413 Bloomfield NM 5.4 ppb 70/100
42 87045 Prewitt NM 5.3 ppb 81/100
43 87031 Los Lunas NM 5.0 ppb 77/100
44 87060 Tome NM 5.0 ppb 53/100
45 87516 Canones NM 5.0 ppb 58/100
46 87529 El Prado NM 5.0 ppb 68/100
47 87549 Ojo Caliente NM 5.0 ppb 44/100
48 87556 Questa NM 5.0 ppb 68/100
49 87571 Taos NM 5.0 ppb 69/100
50 87729 Miami NM 5.0 ppb 33/100
51 87747 Springer NM 5.0 ppb 33/100
52 87520 Chama NM 4.6 ppb 46/100
53 87530 El Rito NM 4.6 ppb 65/100
54 87823 Lemitar NM 4.6 ppb 82/100
55 87828 Polvadera NM 4.6 ppb 82/100
56 87557 Ranchos De Taos NM 4.5 ppb 56/100
57 87323 Thoreau NM 4.3 ppb 81/100
58 88350 Timberon NM 4.2 ppb 53/100
59 87582 Velarde NM 4.1 ppb 69/100
60 88340 Mescalero NM 4.1 ppb 53/100
61 88345 Ruidoso NM 4.1 ppb 63/100
62 88355 Ruidoso NM 4.1 ppb 78/100
63 87020 Grants NM 4.0 ppb 77/100
64 87049 San Fidel NM 4.0 ppb 53/100
65 87401 Farmington NM 4.0 ppb 82/100
66 87402 Farmington NM 4.0 ppb 82/100
67 87499 Farmington NM 4.0 ppb 82/100
68 87538 Ilfeld NM 4.0 ppb 55/100
69 87569 Serafina NM 4.0 ppb 33/100
70 88337 La Luz NM 4.0 ppb 80/100
71 88341 Nogal NM 4.0 ppb 56/100
72 88344 Pinon NM 4.0 ppb 82/100
73 88347 Sacramento NM 4.0 ppb 63/100
74 88424 Grenville NM 4.0 ppb 82/100
75 87523 Cordova NM 3.9 ppb 60/100
76 87714 Cimarron NM 3.9 ppb 33/100
77 87749 Ute Park NM 3.9 ppb 40/100
78 87017 Gallina NM 3.8 ppb 60/100
79 88336 Hondo NM 3.8 ppb 53/100
80 88338 Lincoln NM 3.8 ppb 77/100
81 88343 Picacho NM 3.8 ppb 53/100
82 88348 San Patricio NM 3.8 ppb 63/100
83 88351 Tinnie NM 3.8 ppb 53/100
84 87539 La Madera NM 3.4 ppb 65/100
85 88003 Las Cruces NM 3.4 ppb 86/100
86 88342 Orogrande NM 3.4 ppb 83/100
87 87013 Cuba NM 3.1 ppb 77/100
88 87016 Estancia NM 3.0 ppb 72/100
89 87021 Milan NM 3.0 ppb 82/100
90 87032 Mcintosh NM 3.0 ppb 53/100
91 87061 Torreon NM 3.0 ppb 66/100
92 87517 Carson NM 3.0 ppb 40/100
93 87740 Raton NM 3.0 ppb 64/100
94 88008 Santa Teresa NM 3.0 ppb 63/100
95 88022 Arenas Valley NM 3.0 ppb 79/100
96 88063 Sunland Park NM 3.0 ppb 62/100
97 88118 Floyd NM 3.0 ppb 72/100
98 88046 Mesilla NM 2.9 ppb 82/100
99 87575 Tierra Amarilla NM 2.8 ppb 60/100
100 87824 Luna NM 2.7 ppb 53/100

Methodology

Lead rankings are based on the 90th percentile lead testing value (PB90) reported by water systems under the Lead and Copper Rule. When CCR data is unavailable, EPA SDWIS lead sampling data is used. The EPA action level for lead is 15 ppb (0.015 mg/L). There is no safe level of lead exposure.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-06-04.

Frequently Asked Questions

What is a dangerous lead level in water?

The EPA action level is 15 parts per billion (ppb). The American Academy of Pediatrics recommends no more than 1 ppb for school drinking water. There is no safe level of lead exposure for children.

How is lead measured in water?

Water systems collect samples from homes with known lead service lines or lead solder. The 90th percentile value (PB90) means 90% of samples tested below that level. If PB90 exceeds 15 ppb, the system must take corrective action.

Explore More Rankings

How this ranking is calculated, data sources, and limitations: Rankings Methodology →

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Disclaimer: Rankings are based on EPA, FEMA, and federal agency data. They reflect historical patterns and risk indicators, not necessarily current conditions. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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