The Barwon Centre Against Sexual Assault in Horsham has eliminated the need for Wimmera people to travel to Ballarat or Melbourne to provide evidence of sexual assault.

The centre was upgraded and reopened last year but was without a shower.

Last week, the State Government committed $10,000 for a shower to complete facility, which is used for forensic medical examinations after sexual assaults.

Barwon CASA chief executive Helen Bolton said it was a critical service for the region.

"It gives the ability for victims to be able to have a shower after a medical examination and be given a clean set of clothes," she said. 

"It restores their dignity."

Prior to the upgrades, victims had to be transported to Ballarat or Melbourne to undergo examinations.

In 2013-14 Barwon CASA Wimmera saw 160 victims, of which 11 required a forensic medical examination. Six were transported to Ballarat.

From July to December last year the centre saw 91 people, of which two required an examination.

One went to Ballarat in July and the other was seen in Horsham.

"We have stopped them travelling to Ballarat, " Ms Bolton said.

Barwon CASA Wimmera services the local government areas of Horsham, West Wimmera, Yarriambiack, Northern Grampians, Hindmarsh, Southern Grampians and Glenelg.

"In a rural area that has such a large geographic catchment, to be able to provide services locally is an essential component of the support they receive and their recovery," Ms Bolton said. 

Families and Children Minister Jenny Mikakos said funding the shower was a 'no-brainer'.

"The Andrews Labor Government wants to ensure that victims of sexual assault in the Wimmera area receive the care and support they need, especially after such a traumatic experience," she said.

Ms Bolton said it had been a long-running process to upgrade the centre.

"We are thrilled to be able to have it in Horsham and offer it to people across the Wimmera," she said.

Ms Bolton said victims had a 72 hour window once they were assaulted to undergo an examination.

"Forensic medical examination is always a choice, but it provides evidence for the criminal investigation process," she said. 

"It is an essential piece of the puzzle in solving the crime and prosecuting offenders, so it is really important that victims preserve any evidence.

"We are guided by the victim whether or not they want to report it to police. They can contact CASA and we'll support them in whatever choices they make."

Ms Bolton said CASA Barwon Wimmera provided free and confidential specialist support to victims of sexual assault.

She said people could call the crisis line on 1800 806 292 or CASA Barwon Wimmera on 5381 1211.