Warning signs
- Wet, spongy or unusually green patches over the field
- Slow drains throughout the house, gurgling, toilets needing a second flush
- Sewage odor outdoors, especially after rain or heavy water use
- Backups that clear on their own after a dry spell (the field is at capacity)
Repairable causes
- Clogged or tilted distribution box sending everything to one line
- Crushed, root-invaded or separated lateral lines
- Solids carried over from a tank that was never pumped (pump the tank, jet the lines)
- Hydraulic overload — a leaking toilet or sump discharge dumping water on the field
Not repairable: a biomat that has sealed the trench-soil interface across the whole field, or a field that was undersized for the soil from day one. That's a replacement conversation, and we'll tell you so.
Long Island vocabulary first: most properties here do not have a drain field in the trench-and-gravel sense. They have a leaching pool — a deep perforated ring that liquid soaks out of sideways and downward — or several. They fail the same way a field does. A biological mat forms against the soil face, the soil stops accepting liquid, and the pool backs up. What is different here is what a failure is worth to you. A documented system failure moves a Suffolk County grant application ahead of all others, and the county will pay up to $45,000 toward a replacement system rather than a repair. Before you spend on patching a pool, find out what the county would pay to replace the whole thing. A failing system goes to the front of the line
What a diagnosis visit includes: tank inspection and sludge level, distribution box check, probe of the trenches for saturation, and a written finding with a repair price or a replacement estimate. In New York, repairs that alter the system require a permit; routine maintenance does not.
All work is performed by local licensed, permitted Suffolk County-approved installers.