2026 Rankings

Worst ZIP Codes for Lead in Water in Oregon — 2026

Last updated: August 11, 2026

216 ZIP codes ranked by Lead (ppb) #1: ZIP 97330 (Corvallis, OR) - 22.6 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 216 ZIP codes with data in Oregon, these are the highest-ranked areas for lead (ppb). See also: National Worst ZIP Codes for Lead in Water | All Oregon Rankings

Statistic Value
ZIP codes ranked 216
Highest value 22.6 ppb
Median value 4.5 ppb
State Oregon

Top 100 Worst ZIP Codes

Rank ZIP Code City State Lead (ppb) Safety Score
1 97330 Corvallis OR 22.6 ppb —
2 97009 Boring OR 13.0 ppb 90/100
3 97055 Sandy OR 13.0 ppb 94/100
4 97444 Gold Beach OR 10.3 ppb —
5 97465 Port Orford OR 10.3 ppb —
6 97067 Welches OR 8.0 ppb —
7 97424 Cottage Grove OR 8.0 ppb 97/100
8 97426 Creswell OR 8.0 ppb 98/100
9 97434 Dorena OR 8.0 ppb —
10 97002 Aurora OR 7.6 ppb —
11 97013 Canby OR 7.6 ppb 95/100
12 97062 Tualatin OR 7.6 ppb 82/100
13 97070 Wilsonville OR 7.6 ppb 99/100
14 97140 Sherwood OR 7.6 ppb 77/100
15 97107 Bay City OR 7.0 ppb —
16 97118 Garibaldi OR 7.0 ppb —
17 97131 Nehalem OR 7.0 ppb —
18 97136 Rockaway Beach OR 7.0 ppb —
19 97457 Myrtle Creek OR 7.0 ppb —
20 97471 Roseburg OR 7.0 ppb —
21 97496 Winston OR 7.0 ppb —
22 97024 Fairview OR 6.9 ppb 81/100
23 97060 Troutdale OR 6.9 ppb 75/100
24 97230 Portland OR 6.9 ppb 81/100
25 97113 Cornelius OR 6.4 ppb 67/100
26 97116 Forest Grove OR 6.4 ppb 67/100
27 97117 Gales Creek OR 6.4 ppb 75/100
28 97119 Gaston OR 6.4 ppb —
29 97014 Cascade Locks OR 6.2 ppb —
30 97019 Corbett OR 6.2 ppb 83/100
31 97411 Bandon OR 6.1 ppb —
32 97420 Coos Bay OR 6.1 ppb —
33 97302 Salem OR 6.1 ppb 95/100
34 97068 West Linn OR 6.0 ppb 99/100
35 97325 Aumsville OR 6.0 ppb 98/100
36 97383 Stayton OR 6.0 ppb 98/100
37 97385 Sublimity OR 6.0 ppb —
38 97415 Brookings OR 6.0 ppb —
39 97011 Brightwood OR 5.7 ppb —
40 97049 Rhododendron OR 5.7 ppb —
41 97362 Mount Angel OR 5.3 ppb 91/100
42 97004 Beavercreek OR 5.0 ppb 83/100
43 97034 Lake Oswego OR 5.0 ppb 96/100
44 97042 Mulino OR 5.0 ppb —
45 97045 Oregon City OR 5.0 ppb 95/100
46 97470 Roseburg OR 5.0 ppb —
47 97838 Hermiston OR 5.0 ppb 60/100
48 97459 North Bend OR 5.0 ppb —
49 97035 Lake Oswego OR 4.9 ppb 95/100
50 97224 Portland OR 4.9 ppb 82/100
51 97005 Beaverton OR 4.9 ppb 82/100
52 97008 Beaverton OR 4.9 ppb 82/100
53 97030 Gresham OR 4.9 ppb 78/100
54 97080 Gresham OR 4.9 ppb 78/100
55 97086 Happy Valley OR 4.9 ppb 76/100
56 97201 Portland OR 4.9 ppb 83/100
57 97202 Portland OR 4.9 ppb 77/100
58 97203 Portland OR 4.9 ppb 83/100
59 97204 Portland OR 4.9 ppb 83/100
60 97205 Portland OR 4.9 ppb 83/100
61 97206 Portland OR 4.9 ppb 76/100
62 97208 Portland OR 4.9 ppb —
63 97209 Portland OR 4.9 ppb 83/100
64 97210 Portland OR 4.9 ppb 83/100
65 97211 Portland OR 4.9 ppb 83/100
66 97212 Portland OR 4.9 ppb 83/100
67 97213 Portland OR 4.9 ppb 83/100
68 97214 Portland OR 4.9 ppb 83/100
69 97215 Portland OR 4.9 ppb 83/100
70 97216 Portland OR 4.9 ppb 83/100
71 97217 Portland OR 4.9 ppb 83/100
72 97218 Portland OR 4.9 ppb 83/100
73 97219 Portland OR 4.9 ppb 79/100
74 97220 Portland OR 4.9 ppb 83/100
75 97221 Portland OR 4.9 ppb 82/100
76 97222 Portland OR 4.9 ppb 74/100
77 97223 Portland OR 4.9 ppb 82/100
78 97225 Portland OR 4.9 ppb 82/100
79 97227 Portland OR 4.9 ppb 83/100
80 97229 Portland OR 4.9 ppb 83/100
81 97231 Portland OR 4.9 ppb 73/100
82 97232 Portland OR 4.9 ppb 83/100
83 97233 Portland OR 4.9 ppb 83/100
84 97236 Portland OR 4.9 ppb 66/100
85 97239 Portland OR 4.9 ppb 83/100
86 97258 Portland OR 4.9 ppb —
87 97266 Portland OR 4.9 ppb 83/100
88 97439 Florence OR 4.8 ppb 100/100
89 97480 Swisshome OR 4.8 ppb —
90 97498 Yachats OR 4.8 ppb —
91 97003 Beaverton OR 4.5 ppb 83/100
92 97006 Beaverton OR 4.5 ppb 83/100
93 97007 Beaverton OR 4.5 ppb 82/100
94 97078 First Consumers Nat Bank OR 4.5 ppb 83/100
95 97123 Hillsboro OR 4.5 ppb 67/100
96 97124 Hillsboro OR 4.5 ppb 81/100
97 97301 Salem OR 4.5 ppb 83/100
98 97305 Salem OR 4.5 ppb 93/100
99 97317 Salem OR 4.5 ppb 88/100
100 97321 Albany OR 4.5 ppb 97/100

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: 2026-08-11.

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.

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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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