[digger48]

Well, the best way I know how to do it and pretty cheap, too ... is to get your shovel out “dig it up” in that spot.

Beat me to it! If you get down 18"-24" and the soil is or isn't significantly moister, you'll have an answer.

Besides, if it was a small sewage leak , it'd make the grass greener, not kill it off. If it were a large sewage leak, you'd know it.

[cripplecreek]

My grass is a jungle over my drainfield. I mow it twice as often as I mow the rest of the yard.