GroundRosterLong Island Well ServicesLicensed
| Name | Long Island Well Services |
| License number | NYRD11112 |
| License type | Pump Installation, Pump Service, Well Disinfection |
| License status | Current — registered with NYS DEC |
| Based in | Mt Sinai, New York 11766 |
| Phone | (516) 522-7730 |
"Based in" is the city on the business's state license record. That can be a mailing address; it doesn't tell you where the business works.
Request a quote from Long Island Well Services
What this license covers
- Pump installation: licensed to install, repair, and replace well pumps, pressure tanks, and the piping between the well and the building.
- Cleaning / disinfection: licensed to chlorinate, clean, and redevelop an existing well, the usual response to a bacteria result or a well that has lost yield to buildup.
How to verify this license
We publish the license details exactly as they appear in New York's official licensing records; we do not vouch for the business itself. Before hiring, look up license #NYRD11112 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: New York State DEC - Water Well Contractor Registry, last checked 2026-08-16. Verify at the official source.
Are you Long Island Well Services? Claim this listing to show your business name on it. It's free, and we confirm every claim before anything changes.