Selwyn Waihora Water Improvement Mission member Mike Glover said the meeting is not to be negative about farmers but to look at positive ways forward.
Concerns have been raised over the Central Plains Water scheme leading to the intensification of agriculture and a higher nitrogen load going into Lake Ellesmere/Te Waihora.
In a joint decision by independent commissioners in May 2010 on the construction and operation of the CPW scheme, it was acknowledged infants up to six months who are being bottle-fed could be at risk from an increase in nitrate-nitrogen reaching shallow water.
The report said: "The risk can be avoided by sourcing alternative small quantities of water for the critical six-month period from deep community bores . . . CPW has offered this,".
A CPW spokeswoman confirmed it will immediately supply alternative drinking water to domestic dwellings that have infants at the time of an increase in nitrate-nitrogen levels.
Mr Glover said the community is being forced to cope with stresses they shouldn't have to and it is important people realise what potential risks there are.
He said the group is not against farming but the way the land is being farmed needs to change.
In May, Selwyn Times reported tensions came to a head at the Selwyn Waihora Water Zone Committee over democracy surrounding water issues and the effects of farming intensification.
As a result Environment Canterbury has been running a series of seminars to attempt to reduce tensions.
The meeting will be held this Thursday at the Lincoln High School hall, 7-9pm.