Soft ground, no smell

Hi,
Im new here. I unfortunately live in MA. My house was built in 1965, 1000 gallon tank, been in house for 14 years. I pump the system every 4 – 5 years (3 times since we bought it. It passes title 5 when bought) we are very diligent about use of soaps, no tampons in toilet,...
Soft ground, no smell