2026 Rankings

Worst ZIP Codes for Lead in Water in Tennessee — 2026

Last updated: June 4, 2026

576 ZIP codes ranked by Lead (mg/L) #1: ZIP 37824 (New Tazewell, TN) — 12.0 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 576 ZIP codes with data in Tennessee, these are the highest-ranked areas for lead (mg/l). See also: National Worst ZIP Codes for Lead in Water | All Tennessee Rankings

Statistic Value
ZIP codes ranked 576
Highest value 12.0 ppb
Median value 1.0 ppb
State Tennessee

Top 100 Worst ZIP Codes

Rank ZIP Code City State Lead (mg/L) Safety Score
1 37824 New Tazewell TN 12.0 ppb 41/100
2 37825 New Tazewell TN 12.0 ppb 51/100
3 38057 Moscow TN 11.1 ppb 74/100
4 38004 Atoka TN 9.1 ppb 80/100
5 38023 Drummonds TN 9.1 ppb 73/100
6 38058 Munford TN 9.1 ppb 75/100
7 38071 Tipton TN 9.1 ppb 66/100
8 38486 Westpoint TN 7.6 ppb 56/100
9 37820 New Market TN 7.0 ppb 62/100
10 38578 Pleasant Hill TN 6.3 ppb 95/100
11 37890 White Pine TN 5.2 ppb 63/100
12 37020 Bell Buckle TN 5.0 ppb 69/100
13 38463 Iron City TN 4.9 ppb 70/100
14 38037 Gates TN 4.9 ppb 94/100
15 37501 Memphis TN 4.7 ppb 95/100
16 37544 Memphis TN 4.7 ppb 99/100
17 38101 Memphis TN 4.7 ppb 95/100
18 38103 Memphis TN 4.7 ppb 90/100
19 38104 Memphis TN 4.7 ppb 90/100
20 38105 Memphis TN 4.7 ppb 95/100
21 38106 Memphis TN 4.7 ppb 90/100
22 38107 Memphis TN 4.7 ppb 90/100
23 38108 Memphis TN 4.7 ppb 95/100
24 38109 Memphis TN 4.7 ppb 90/100
25 38111 Memphis TN 4.7 ppb 90/100
26 38112 Memphis TN 4.7 ppb 95/100
27 38113 Memphis TN 4.7 ppb 95/100
28 38114 Memphis TN 4.7 ppb 90/100
29 38115 Memphis TN 4.7 ppb 90/100
30 38116 Memphis TN 4.7 ppb 90/100
31 38117 Memphis TN 4.7 ppb 90/100
32 38118 Memphis TN 4.7 ppb 90/100
33 38119 Memphis TN 4.7 ppb 90/100
34 38120 Memphis TN 4.7 ppb 90/100
35 38122 Memphis TN 4.7 ppb 90/100
36 38124 Memphis TN 4.7 ppb 99/100
37 38125 Memphis TN 4.7 ppb 90/100
38 38126 Memphis TN 4.7 ppb 99/100
39 38127 Memphis TN 4.7 ppb 85/100
40 38128 Memphis TN 4.7 ppb 85/100
41 38130 Memphis TN 4.7 ppb 99/100
42 38131 Memphis TN 4.7 ppb 99/100
43 38132 Memphis TN 4.7 ppb 95/100
44 38133 Memphis TN 4.7 ppb 90/100
45 38134 Memphis TN 4.7 ppb 85/100
46 38135 Memphis TN 4.7 ppb 90/100
47 38136 Memphis TN 4.7 ppb 99/100
48 38137 Memphis TN 4.7 ppb 95/100
49 38141 Memphis TN 4.7 ppb 95/100
50 38145 Memphis TN 4.7 ppb 99/100
51 38147 Memphis TN 4.7 ppb 99/100
52 38148 Memphis TN 4.7 ppb 99/100
53 38150 Memphis TN 4.7 ppb 99/100
54 38151 Memphis TN 4.7 ppb 99/100
55 38152 Memphis TN 4.7 ppb 99/100
56 38157 Memphis TN 4.7 ppb 99/100
57 38159 Memphis TN 4.7 ppb 99/100
58 38161 Memphis TN 4.7 ppb 99/100
59 38163 Memphis TN 4.7 ppb 99/100
60 38165 Memphis TN 4.7 ppb 99/100
61 38166 Memphis TN 4.7 ppb 99/100
62 38167 Memphis TN 4.7 ppb 95/100
63 38168 Memphis TN 4.7 ppb 95/100
64 38173 Memphis TN 4.7 ppb 99/100
65 38174 Memphis TN 4.7 ppb 99/100
66 38175 Memphis TN 4.7 ppb 99/100
67 38177 Memphis TN 4.7 ppb 99/100
68 38181 Memphis TN 4.7 ppb 99/100
69 38182 Memphis TN 4.7 ppb 99/100
70 38184 Memphis TN 4.7 ppb 99/100
71 38186 Memphis TN 4.7 ppb 99/100
72 38187 Memphis TN 4.7 ppb 95/100
73 38188 Memphis TN 4.7 ppb 99/100
74 38190 Memphis TN 4.7 ppb 95/100
75 38193 Memphis TN 4.7 ppb 99/100
76 38194 Memphis TN 4.7 ppb 99/100
77 38197 Memphis TN 4.7 ppb 99/100
78 38449 Ardmore TN 4.6 ppb 63/100
79 38370 Saltillo TN 4.4 ppb 78/100
80 37869 Sneedville TN 4.3 ppb 68/100
81 38237 Martin TN 4.2 ppb 90/100
82 38238 Martin TN 4.2 ppb 99/100
83 38006 Bells TN 4.1 ppb 95/100
84 38549 Byrdstown TN 4.0 ppb 63/100
85 37742 Greenback TN 4.0 ppb 40/100
86 37777 Louisville TN 4.0 ppb 70/100
87 37801 Maryville TN 4.0 ppb 66/100
88 37802 Maryville TN 4.0 ppb 61/100
89 37803 Maryville TN 4.0 ppb 66/100
90 37804 Maryville TN 4.0 ppb 61/100
91 37878 Tallassee TN 4.0 ppb 40/100
92 37886 Walland TN 4.0 ppb 45/100
93 37882 Townsend TN 4.0 ppb 66/100
94 38324 Clarksburg TN 4.0 ppb 99/100
95 38343 Humboldt TN 3.8 ppb 85/100
96 38562 Gainesboro TN 3.8 ppb 40/100
97 37853 Rockford TN 3.6 ppb 40/100
98 37752 Harrogate TN 3.5 ppb 70/100
99 38358 Milan TN 3.2 ppb 88/100
100 37083 Lafayette TN 3.0 ppb 68/100

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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