Kilotest: Diagnoses of ID not unique violation by HTML element 3429 on Northwest Natural Gas page

Basics

About the Northwest Natural Gas page

• URL: https://www.nwnatural.com/
• Tested 7 days ago by job wta on 2026-05-26 at 03:09

About HTML element 3429

• Tag name: path
• Text: [not applicable]
• Start tag: <path d="M18.6551746,12.1697324 L21.6360077,12.1697324 L21.6360077,9.25662897 L18.6544463,9.25662897 C18.4621815,9.63169103 18.1482946,7.69666207 17.7331774,7.01645241 L19.841536,4.90809379 L17.243776,2.31106207 L15.1354174,4.41869241 C14.4544794,4.00430345 13.2499112,3.69041655 12.8966974,3.49888 L12.8966974,0.517318621 L9.25531807,0.517318621 L9.25531807,3.49888 C8.90210428,3.69041655 7.69607945,4.00430345 7.01659807,4.41869241 L4.90751117,2.31106207 L2.30975117,4.90809379 L4.41883807,7.01790897 C4.00299255,7.69666207 3.68910566,8.90341517 3.49611255,9.25662897 L0.516007724,9.25662897 L0.516007724,12.1697324 L3.49611255,12.1697324 C3.68910566,13.2504938 4.00299255,14.4572469 4.41883807,15.1367283 L2.30975117,17.2458152 L4.90751117,19.8421186 L7.01586979,17.73376 C7.69607945,18.1496055 8.90210428,18.4634924 9.25531807,18.6557572 L9.25531807,21.6373186 L12.8966974,21.6373186 L12.8966974,18.6557572 C13.2499112,18.4634924 14.4552077,18.1496055 15.1354174,17.7344883 L17.2445043,19.8421186 L19.841536,17.2458152 L17.7331774,15.1367283 C18.1482946,14.4572469 18.4621815,13.9787697 18.6551746,12.1697324 L18.6551746,12.1697324 Z" id="Stroke-1521">
• XPath: /html/body/svg[1]/defs[1]/symbol[238]/g[1]/g[1]/g[1]/g[1]/g[1]/g[1]/path[1]
• Bounding box: x = 0, y = 0, width = 0, height = 0

About the ID not unique issue

• Why it matters: User may be pointed to the wrong item
• Priority: highest
• Related WCAG standard: 4.1.1

Diagnoses

Here is how tools diagnose the ID not unique issue for HTML element 3429 of the Northwest Natural Gas page.

1. Duplicate id attribute value "Stroke-1521" found on the web page.

   Tool: HTML CodeSniffer (Squiz Labs)

   Rule: E-WCAG2AAA.Principle4.Guideline4_1.4_1_1.F77

2. [failed]

   Tool: QualWeb (University of Lisbon)

   Rule: QW-BP30