GWMWater has confirmed it has switched on supply to Brim, Beulah, Sea Lake and Woomelang, after more than a year working to upgrade water infrastructure through the region.

Brim's post office and general store co-owner Colleen McPherson said it meant the small town would become more amenable to tourists and residents.

Mrs McPherson, who helps run the store alongside husband Chris, said residents had had to buy drinking water or rely on rainwater tanks up until now.

"Towards the end of summer, the tank system we have installed run extremely low and we do get to the point where we are having to buy mass bottles of water to take the pressure off," she said.

"We don't rely on town water as such, but there are other residents that are relying 100 per cent on that supply."

Related: Drinking water in the pipeline for Wimmera and southern Mallee towns

Mrs McPherson said Brim's elderly population would see the benefits day-to-day.

"It can be a hassle during the warmer months for them to have to go to the drinking water trailer which the council keeps set up to fill their containers, so it will be luxury to fill a jog with good quality drinking water from the tap," she said.

"Up until now we've had to run with the quality of the pipeline water. Sometimes that's been really good, but depending on the rainfall further south and what the flush has been like coming through the system, the water is quite brown because it's been picking up mineralisation.

"I think the other thing that will come into play is having fresh drinking water down at our creek campsite. In the past people travelling to town weren't aware they couldn't get drinking water from the tap. That's going to be a huge thing coming into the warmer months this year - GWMWater has got the timing right."

Brim is one of six Yarriambiack Shire towns that boasts an enormous mural as part of the Silo Art Trail.

GWMWater managing director Mark Williams said the organisation sourced water for the four towns from Lake Bellfield in the Grampians and treated it in Warracknabeal.

He said crews connected 812 properties across the four towns, including 57 in Brim.

This involved installing 130 kilometres of pipeline, seven clear water storage tanks and four new pump stations, while upgrading three chlorinators as part of the project.

"The change in supply arrangements for each town has enabled us to ensure the water consistently meets the Victorian Safe Drinking Water Regulations," he said.

"There were some minor delays in the roll out, but it was about May when we had most properties connected.

"In our current price determination we've committed to upgrade water quality at four other towns, including Kaniva, Elmhurst and Moyston. We're still working through the technical solutions behind all of those."

While you're with us, you can now receive updates straight to your inbox twice weekly from the Wimmera Mail-Times. To make sure you're up-to-date with all the news from across the Wimmera, sign up below.