Westchester County, New YorkReady to fill online

Comprehensive On-Site Wastewater Treatment System Development Plan Checklist

Checklist that must accompany a new OWTS construction permit application, signed by the preparer to certify all plan elements are complete and accurate.

First page of the Westchester County, New York Comprehensive On-Site Wastewater Treatment System Development Plan Checklist
Preview being prepared. The real form is what gets filled
Jurisdiction
Westchester County, New York
Fields
54
Includes
Signatures
Fill and submit free

Create a free account to fill this form, sign it and download it ready to file. No card needed.

  • Your answers print onto the health department's own PDF
  • Sign on screen: phone, tablet or laptop
  • Save it and come back to it

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Type into the real county form. No printing, no retyping.

The county's own PDF

Your answers print onto the health department's document, not a lookalike.

Download and file

Get the finished PDF and hand it in exactly as they expect it.

What this form asks for

Have these to hand before you start.

  • Name Date
  • Tax Map Designation Number (TMDN)
  • Site Address
  • City/Town
  • State
  • Zip Code
  • Municipality
  • A licensed Professional Engineer, Registered Architect, licensed and/or registered to practice in the State of New York and experienced in design onsite wast...
  • Westchester County Department of Health Application Form for certificate of construction compliance (5 copies).
  • Guaranty for Separate Sewage Disposal System (3 copies) must be submitted. Form must be signed by both the owner/builder and licensed septic system installer.
  • Well completion report completed and signed by well driller registered with NYSDEC.
  • As-Built plans (5 sets).
  • Laboratory report of water well sampling as per private well water testing law effective November 19, 2007 from a NYSDOH Certified Laboratory.
  • Underwriter’s Certificate for electrical facilities is needed where pumps or other electrical devices are used in the sewage treatment system.
  • The entire property must be shown (including all property lines & dimensions)
  • Owner’s name & Mailing Address
  • Project site address including zip code
  • Vicinity Map
  • Tax Map Designation Number Page 1 of 3 Revised 12/22/23
  • If lot is part of a Realty Subdivision provide name and RS lot number
  • Watershed, Reservoir Basin
  • Title Block and scale
  • North Arrow
  • Date of Preparation/Revision Dates

…and 30 more.

Where it goes

Submit as part of the full OWTS construction permit package to the Westchester County Department of Health Bureau of Environmental Quality.

The form is the free part

SepticSync runs the rest of the job too

Filling this permit is free and stays free. What you pay for is everything that happens around it: the filing, the chasing, the paperwork that piles up behind every install.

Free

no card

Enough to get a permit out the door today.

  • 3 forms a month, filled and signed
  • The county's own PDF, not a lookalike
  • Site sketch and on-screen signatures
  • Saved for 6 months
  • Send to the property owner to sign
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A paid plan

from $99/mo

For anyone doing this more than occasionally.

  • Unlimited forms, filed to the county for you
  • Permits, inspections and parcels in one place
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  • AI diagnostics and failure prediction
  • Your whole crew, with roles and permissions
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14 days of everything, free and without a card.

What a plan actually does

  • Filed for you

    We send the finished form to the health department at the address you set per form, and keep the receipt.

  • Permits tracked

    Every application followed from submission to approval, so nothing sits waiting on someone without you knowing.

  • Scheduling and dispatch

    A drag-and-drop calendar, crews assigned, and a service record written the moment a job is finished.

  • Invoicing and QuickBooks

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  • AI diagnostics

    Photograph a tank or field and get cracks, corrosion and root intrusion flagged, with failure risk at 6, 12 and 24 months.

  • Parcels and compliance

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  • Built for the truck

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  • Any form, not just ours

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