While geology, well design and operating conditions all influence the long-term performance of a groundwater well, one of the most common causes of declining yield is the gradual accumulation of biological and mineral deposits within the well and surrounding formation.
Biofilms, iron bacteria, manganese deposits and other fouling mechanisms can progressively restrict flow through the well screen and the aquifer immediately surrounding it. Because this process usually develops slowly over many years, declining performance is often accepted as a normal consequence of ageing rather than recognised as a maintenance issue that can frequently be addressed.
Understanding the underlying cause of performance loss is an important first step. In many cases, appropriate rehabilitation techniques can help restore well capacity, improve pumping efficiency and extend the operational life of valuable groundwater assets, delaying the need for more costly replacement or redevelopment.
At Pantonite, we believe that understanding the underlying causes of infrastructure performance loss is the first step towards making better maintenance decisions.