The water in my little wildlife pond is getting low, my water butt is empty and my hose connection needs fixing. Can I top up water level with tap water in a watering can or am I best off just leaving it?
You can buy a de-chlorinating treatment for tap water so it is safe for ponds/wildlife/fish. I often top my water butts with tap water if there is no more rain forecast but I have used plain tap water as long as you don’t replace too much in one go. Tap water is not good for fish and in wildlife ponds could upset the balance, allowing pond weeds to accelerate.
I top up my pond with tap water - it has got fish and plants in it - hasn't caused me any problems in the last 20 years. Even for major water changes ie over 50% of the water (circa 600gallon pond) I use tap water also.
'Optimism is the faith that leads to achievement' - Helen Keller
Check if your water provider uses chlorine or chloramine to treat your water. Chlorine will disperse after a while (I still advise using a treatment solution though), chloramine does not disperse and will do more harm to your wildlife.
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I often top my water butts with tap water if there is no more rain forecast but I have used plain tap water as long as you don’t replace too much in one go. Tap water is not good for fish and in wildlife ponds could upset the balance, allowing pond weeds to accelerate.