Long queues for Hemel Hempstead’s dump have been blamed on the time of the year by council officials, not cutbacks in opening hours.
From the start of the year the household waste recycling centre has been open five days a week rather than seven.
The hours of operation at the Eastman Way site have also been reduced by two hours a day during the summer months.
But a spokesman for Herts County council, which operates the site, said: “Spring is always a very busy period and, this year, the combination of very good weather, public holidays and school holidays has meant demand has been at its very highest.
“It is great to see so many residents who want to recycle and dispose of household waste responsibly and the county council hopes this continues, but we ask users to bear with us at this particularly busy time.
“We continually review and monitor the whole service, including queuing times at our household waste recycling centres, and do encourage residents to think about the time that they visit.
“Arriving before or at the opening time will cause queues, so we ask residents to avoid doing this if possible.”
It was decided to close all of the county’s 17 waste recycling centres on two of the quieter days during the week following a public consultation held last summer.
Opening times have been co-ordinated across the county so that when one site is closed, another alternative waste recycling centre is open.
The changes are expected to save £6 million over the next eight years.
Hemel Hempstead’s site is open on Monday, Thursday, Friday, Saturday and Sunday from 10am to 6pm during the summer and 8am to 4pm during the winter.
When this waste recycling centre is closed on Tuesday and Wednesday, the neighbouring Berkhamsted site is open.
All opening times and days can be found at www.hertsdirect.org/wasteaware