This 'Non Potable Water - Do Not Drink' sign does exactly what you need - clearly warns people not to drink from unsafe water sources. Made in the USA from heavy-duty .040 aluminum that won't rust, warp, or deteriorate outdoors. The 10x7 inch size is perfect - large enough to be easily seen but not so big it's obtrusive. Comes with four pre-drilled holes for easy mounting on walls, posts, or equipment. The graphics are fade-resistant thanks to high-quality printing that stands up to sun, rain, and harsh weather conditions. Great for marking irrigation water, industrial water systems, reclaimed water sources, or any situation where water isn't safe for human consumption. The professional design looks authoritative without being aggressive - gets the message across clearly. Useful for factories, farms, parks, construction sites, marinas, or even residential properties with separate irrigation systems. Much more durable than plastic or sticker signs that peel or become brittle over time. The aluminum material means you can mount it pretty much anywhere without worrying about corrosion. Complies with standard safety signage requirements. Easy to install with basic screws or bolts - no special tools or adhesives needed. A simple but important safety item that could prevent serious health issues.