A 50% price hike for using the toilets at Derby Bus Station has been condemned by passengers.
The cost of using the men's and women's toilets on the site has increased to 30p in recent days, up from 20p.
Spending a penny there now costs as much as it does at Kings Cross and Birmingham New Street railway stations.
One regular male user of the toilets, who is 55, said parents had already been taking children out of the station to relieve themselves outside instead of paying the 20p.
He said the price rise would only increase that problem.
A Derby City Council spokeswoman said the increase was brought in reluctantly. She said there have been no increases for the past five years, and "it is felt necessary to increase the charge to meet rising running costs".
Julia Johnson, 64, of Wood Road, Chaddesden, said the price was "disgusting".
"It's just about making money out of people who are caught short. You've got to pay it," she said. "I should say 15p to 20p would be a reasonable price.
"I'll try and avoid using them from now on and use the free ones at the Eagle Market instead."
William Clewer, 68, of Chaddesden, said he had used the toilets in the past but that he would now be put off as 30p is "going too far".
The council spokeswoman said the toilets were retiled and refurbished in January 2014.
She said: "Since March 2010, the price to use the facility has been 20p. The charge was specifically brought in to deter vandalism and anti-social behaviour which was common practice at the old bus station.
"The current bus station costs over £600,000 a year to manage and maintain and all income generated is reused to support activities at the bus station.
"This includes the recent refurbishment of the bus station toilets, the introduction of real-time passenger information and resurfacing of the bus station apron."
When the Derby Telegraph visited the loos on Wednesday and yesterday, they found them being cleaned and they looked presentable.
On Wednesday, two of the toilets in the men's urinals had buckets underneath but these had gone yesterday.
The 55-year-old regular user of the men's toilets said the toilets were "quite often awash with waste material from faulty urinals".
He said: "If they put the prices up they ought to put the standards up.
"The council should review its charges for the toilets."
The council spokeswoman said the toilets "are cleaned on an hourly basis and as and when required if a particular incident occurs".
No change is given at the automated barriers but there is a change machine next to the toilets.
A Network Rail spokeswoman said the 30p charges for Kings Cross and Birmingham New Street were to pay for their upkeep and staffing.
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