NEW laws for people not hooked into the mains water supply could mean they are hit with massive bills of up to £1,500.
Meon Valley MP George Hollingbery is seeking assurances from the government about plans to register septic tanks.
As part of the European groundwater directive, homes not connected to main sewers could face paying out if they live in what is called a Source Protection Zone, SPZ1.
Under the proposed legislation, anyone with a septic tank within 55 yards of a groundwater source will have to automatically apply for a permit costing up to £1,500.
It could also mean replacing the tank or even paying for some form of treatment works.
The government halted the general septic tank registration scheme and its fees in July while it looks at the issue.
Mr Hollingbery said: ‘Many people in Hampshire live in the zones and potentially it could be a major financial headache for them.
‘I have spoken to environment minister Richard Benyon about my concerns and I am awaiting assurances from him that SPZ1 will also be looked at carefully and clarification of the issues and registration will be released as soon as possible.’