Corten Steel Water Features: Do They Need a Pump or Liner?

Corten steel water bowls and tables can be run as still water with no pump at all, or with a small pump for gentle movement and sound — neither is essential. Corten ponds don't need a liner, since they're hand-welded, self-contained vessels, but benefit from a pump if you're keeping fish or want filtration. Here's the detail for each.

Water bowls

Corten Steel Curved Water Bowls work beautifully as a simple, still reflective pool — just fill and enjoy. If you want movement, a small solar or mains submersible pump sits neatly inside without any structural changes needed.

Water tables

Corten Steel Square Water Tables follow the same logic — still water gives a calm, mirror-like surface, while a pump adds gentle sound and movement, popular for courtyards and seating areas where ambient noise is welcome.

Ponds

Corten steel ponds are welded steel vessels, so no liner is required — unlike a traditional dug pond. If you plan to keep fish, a pump with filtration is strongly recommended for water quality and oxygenation. For a purely ornamental, plant-only pond, a pump is optional but helps prevent stagnant water and algae build-up in still summer weather.

Choosing a pump

• Solar pumps — simple to install with no wiring, good for bowls and tables in a sunny spot.
• Mains submersible pumps — more reliable output, better suited to ponds and any feature you want running after dark or on cloudy days.
• Filtration units — essential for fish ponds, optional for purely ornamental features.

Frequently asked questions

Will still water in a bowl or table go stagnant?

With regular topping up and occasional refreshing, still water is fine for ornamental use; a small pump reduces the need to change water as often.

Does the Corten patina affect water quality?

No — the weathering surface is separate from the water-holding chamber in Edensteel's designs.

Can I add fish to a water bowl or table?

These are best treated as ornamental features due to their shallower depth — for fish, a proper pond with adequate depth and filtration is the right choice.

Do I need an electrician to install a pump?

Solar pumps need no electrical work. Mains pumps should be installed via a suitably rated outdoor socket — use a qualified electrician if you're unsure.

Explore water features

Browse the full Corten steel water features collection, made in Britain.