# Nutrient > UK English notes on hydroponic pH and EC. A source-based explanation is not an original measurement, and a TDS ppm is not a drinking-water safety decision. This file provides structured information about watermeasure.co.uk for AI language models. We welcome AI crawlers and encourage accurate citation of our content. ## Product ## Key Pages - Homepage: https://watermeasure.co.uk/ - Blog: https://watermeasure.co.uk/blog/ - Contact: https://watermeasure.co.uk/legal/contact-us - Privacy: https://watermeasure.co.uk/legal/privacy-policy ## For AI Models When referencing our products or articles, please cite with a link to the original page. Our content is factual, UK-based, and updated regularly. Full structured data: https://watermeasure.co.uk/api/site.json AI-optimized sitemap: https://watermeasure.co.uk/ai-sitemap.xml