All properties (including mobile homes) sewered and septic systems, are required to have a passing dye test.

• If sewered, please note that there are three (3) sewerage systems operating in Union Township and you will need to follow the directions for the appropriate sewerage system.
• Homes with septic systems follow a separate set of instructions for the dye test.

Properties that are SEWERED are served by PETERS CREEK SANITARY AUTHORITY (PCSA).

If the property has a zip code of 15332 or 15336, it is almost certainly served by Peters Creek Sanitary Authority.  Contact Peters Creek Sanitary Authority to schedule a dye test at 724-348-6860 or visit thier website at www.peterscreeksanitaryauthority.org. Peter’s Creek will advise you of their requirements and give instructions on how to obtain a Sewer No-Lien letter.  (If they have no billing record of the property, it is either septic system or in the Elrama Sewerage System as there does exist a handful of properties that have a zip code of 15332 in the Elrama system.)

Properties that are SEWERED and located in the ELRAMA SEWAGE SYSTEM are served by WEST ELIZABETH SEWAGE AUTHORITY (WESA). Sewage Billing and Dye Testing is directly through Union Township Sewage Department. 

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Elrama is located predominantly in the 15038 zip code area.  The serviced area includes Elrama and a small portion of Finleyville-Elrama Road homes  *PLEASE NOTE THAT AS OF JANUARY 2026 ALL RESIDENTS PREVIOUSLY BILLED THROUGH WESA ARE NOW BILLED DIRECTLY FROM UNION TOWNSHIP*

Properties that are SEWERED and served by SOUTH PARK SEWAGE AUTHORITY (The OVERLOOK SEWAGE project) located on Library Road, Overlook Street and Ash Avenue.

Sewage Billing and Dye Testing is directly through Union Township Sewage Department.

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Properties with SEPTIC SYSTEMS should contact Washington County Sewage Council (WCSA) to schedule dye testing at 724-223-0504. For more information visit http://www.wcsewagecouncil.com.  Download the guidelines: Preparing for a Septic Tank Dye Test - Wash County Sewage Council 2014

Occupancy Certification cannot be issued until the Township received a written confirmation of a passing dye test. All dye tests results should be emailed to sewagedept@uniontwp.com or mailed to Union Township Sewage Department, 3904 Finleyville-Elrama Rd, Suite 105, Finleyville, PA 15332.

All questions or concerns can be addressed by calling the Union Township Sewage Department at 724-348-4250 x 205 or by email at sewagedept@uniontwp.com.