Septic Permitting in Chester County: A County Health Department, Not a Township SEO

Why Chester County's septic process looks nothing like the state default

Pennsylvania's Act 537 sewage-facilities framework, described on this project's Pennsylvania state page, generally routes on-lot (septic) permitting through a certified Sewage Enforcement Officer (SEO) who serves a specific municipality -- meaning the actual permitting contact changes from township to township across most of the state. Chester County is one of only six Pennsylvania counties that instead operates its own county health department (the others are Allegheny, Bucks, Erie, Montgomery, and Philadelphia), and the Chester County Health Department's Bureau of Environmental Health Protection directly issues on-lot sewage disposal system permits, individual water-supply (well) permits, and reviews subdivision plans for sewage and water-supply adequacy -- across all 73 municipalities in the county, not township by township.

For a buyer, that centralization is a genuine practical advantage: rather than first identifying which certified individual serves a given township, a septic or well question in Chester County routes to one department, at one set of phone numbers (610-344-6225 general; 610-344-6688 or 610-344-6526 for sewage and water specifically) and one email (cchd@chesco.org). The department also licenses well-drilling contractors and septic installers/pumpers countywide, so a Chester County contractor list is a single reference rather than a patchwork of township-approved installers.

A public, UPI-searchable permit-history tool -- a genuinely useful due-diligence shortcut

Chester County publishes an online permit-search system (through the county's EnerGov self-service portal) covering sewage and well permits issued from 2000 through the present, searchable directly by a property's Uniform Parcel Identifier (UPI), the county's tax-parcel number. To use it: select "Permit" from the search-type dropdown on the portal, then enter the property's UPI. That gives a buyer a real, independent check on a septic or well system's permit history -- when it was installed, repaired, or altered, and under what permit number -- rather than relying solely on a seller's disclosure form or an unverified claim about the system's age. (One of the county's own published FAQs, "How old is my septic system?", exists specifically because this question comes up constantly -- the permit search is the county's own answer to it.)

This is a meaningfully different due-diligence step than in most Pennsylvania counties, where septic permit records are scattered across dozens of individual SEOs and municipal offices with no single public search tool. For any Chester County parcel with an existing septic system or well, running the UPI through this portal before closing is a cheap, fast, and genuinely informative step that most other PA counties in this project simply don't offer.

The permit process and what it costs

New construction, repairs, and alterations to an on-lot sewage disposal system in Chester County all require a permit from the Health Department before work begins, following the county's own published Application/Permit Procedure for On-Lot Sewage Disposal Systems. Well construction likewise requires a permit: the county's fee schedule effective January 1, 2025 lists a new well permit at $300, with a second or additional well on the same property (or monitoring wells, test wells, and open-loop geothermal wells) at $175 each. Site evaluations -- the county's version of a perc/soil-suitability test administered as part of the permitting process -- run $175 per lot for residential sites and $200 per site for non-residential. This page did not independently confirm the exact dollar figure for a new on-lot sewage system permit itself (as distinct from the well and site-evaluation fees above) from indexed search content; confirm the current sewage-system permit fee directly against the county's published fee schedule or by calling the department, since Chester County's fees are reviewed and adjusted periodically.

Payment runs through Municipay, the county's electronic payment vendor, using a shopping-cart model that lets an applicant pay multiple related fees (for example, a site evaluation and a permit application) in a single transaction rather than as separate mailed checks -- a small but genuinely more modern process than the check-and-mail-in system common in more rural PA counties running through a private SEO.

What this means if you're buying land or a home in Chester County

If you're buying raw land anywhere in Chester County and planning a new septic system, the Health Department -- not a township office -- is your single point of contact for both the site evaluation and the permit itself; budget the $175-$200 site-evaluation fee and the (unconfirmed, but likely a few hundred dollars based on comparable county fee schedules) sewage-system permit fee as separate line items, and confirm current figures directly before budgeting a project. If you're buying a property with an existing septic system or well, run the property's UPI through the county's online permit-search portal before closing -- it's free, fast, and gives you an actual permit history rather than a seller's word for the system's age and condition. Either way, because Chester County runs this centrally rather than through a patchwork of township SEOs, a single phone call or email to the Bureau of Environmental Health Protection can typically resolve both the permit-history and new-permit questions for any parcel in the county, regardless of which of the county's 73 municipalities it sits in.