Water has a sulfur smell

Hello, sorry if this is the wrong place to post this. It's late at night and the issue is bugging me.

When I was almost done washing dishes with hot water, I noticed a strong sulfur smell. We then had a shower and also noticed the smell. At first I assumed that it was an issue with the hot water tank. I then ran the cold taps and found that the sulfur smell was just as strong. It is in all taps in the house and the smell is also in the toilet water.

After letting the hot water tank sit for a few hours without use there is now longer a smell from the hot water, but there still is from the cold water.

It is a new build home in a new area. We took possession 4 months ago. We are on city water in Winnipeg Manitoba. Its 2:00AM so I'm unable to ask neighbours if they are also having the issue at this time.

Sorry again if this is the wrong place to inquire about this. I'm just hoping its not an issue with our new house.

​

Thanks.