PFAS in Drinking Water: Louisville’s Findings & Rising Concerns

PFAS in Drinking Water: Louisville’s Findings & Rising Concerns

November 30, 2025 Jennifer Chen Health

Here’s a breakdown of the HTML snippet, focusing on the image and its related data:

Overall Structure

The code appears to be part of a larger article on NPR. It contains an image within a <div> structure with classes like BUCKETBLOCK, BUCKET IMG, and BUCKETWRAP. The image is wrapped in a <picture> element, which is designed for responsive images.

image Details

* Original Image URL: http://npr-brightspot.s3.amazonaws.com/ad/bc/2007c584497d89eccf8b4b7c9c88/img-2784.JPEG

* Image Description (alt text): “John Brundahl (left) production superintendent, Todd Colvin, chief water systems operator, and Mark Toy, general manager, run the nation’s largest resin PFAS water treatment plant at the Yorba Linda Water District in Orange County, Calif. The three men stand in front of large filtration tanks at the treatment plant.”
* Image Format: The code provides versions of the image in both JPEG and WebP formats. WebP is generally more efficient (smaller file size for the same quality).
* Responsive Image Handling: The <picture> element and the srcset attribute on the <source> elements are used to provide different image versions based on the user’s screen size and browser support.
* Lazy Loading: the loading="lazy" attribute on the <img> tag indicates that the image will only be loaded when it’s near the viewport, improving page load performance.
* Image Resizing/Quality: The URLs include parameters for resizing ({width}), quality ({quality}), and format ({format}). This suggests the images are dynamically generated by a content delivery network (CDN) called “brightspotcdn”.

Key Attributes and Data

* data-original: This attribute holds the URL of the full-quality, original JPEG image. It’s likely used by the “lazyOnLoad” script to replace the initial low-quality placeholder with the full-resolution image when it comes into view.
* data-template: This attribute defines the URL template used to generate different image sizes and qualities. The {width}, {quality}, and {format} placeholders are replaced with actual values.
* data-format: Specifies the image format (jpeg or webp).
* class="lazyOnLoad": Indicates that the image is handled by a lazy loading script.
* type="image/webp" and type="image/jpeg": Specifies the MIME type of the image.
* srcset: Used within the <source> element to provide a list of image URLs with different resolutions, allowing the browser to choose the most appropriate one.

CDN (Content Delivery Network)

The URLs all point to npr.brightspotcdn.com. Brightspot is a content management system (CMS) and CDN that NPR uses to deliver images and other assets efficiently.the dims3 part of the URL likely refers to a specific image processing service within Brightspot.

In summary: This code snippet demonstrates a modern approach to image delivery, using responsive images, lazy loading, and a CDN to optimize performance and user experience. The image is available in multiple formats and sizes,and the browser or a JavaScript script will choose the best option based on the user’s device and network conditions.