What Wynmere is, and what the public record shows
Wynmere is a named subdivision in Horsham Township, and listings for homes on Wynmere Drive carry the subdivision name, a 19044 ZIP and public water and public sewer. The house types are semi-detached twins and townhouses in a colonial style, and one listing on the street shows an estimated build year of 1984.
That puts Wynmere inside the stretch the township plan describes. Its housing section says over 69 percent of Horsham homes were developed between 1950 and 1990, with another growth surge in the 1980s. Wynmere is a good example of that later wave.
We do not claim to know what is inside your walls from the build year alone. Plumbing in a shared wall home depends on repairs, remodels and past owners, so the first visit is about looking, not assuming.
Living in a twin or townhome changes the plumbing questions
A shared wall means shared sound and sometimes shared risk
A leak from a neighbor's side can show up as a stain on your wall. Note where the water appears and whether the neighbor has seen anything on their side.
Know where your own shutoff is
Many twins have the water entry in the basement or utility closet. Finding the valve and testing that it turns is a five minute job worth doing before you need it.
Compact water heater spaces
Townhome utility closets leave little room. A replacement unit has to fit the space, the vent path and the drain pan setup, so measure before you shop.
Shared lot lines and cleanouts
On narrow lots a cleanout may sit close to the property line. Locate yours before a backup, because finding it during one costs time.
Who owns which sewer and water pipe in Horsham
Horsham Water and Sewer Authority serves about 93 percent of the township. Its published rules split the sewer line at the right-of-way. The Authority is responsible for the service lateral out to that line, and the customer owns and maintains the building lateral from the house to it.
If a drain backs up, call the Authority and a plumber
The Authority will check the street main at no charge when you call its office at (215) 672-8011. If the main is clear, the blockage is on the building lateral, which is yours to clear and repair.
The Authority also notes that most basic homeowner policies do not cover sewer backups. Reading your policy for sewer, drain and sump backup coverage is worth doing before a problem.
The water side works the same way. The Authority maintains the line from the main to the curb stop, and you own the Building Water Service Line from there to the house. A leak on your side is yours to repair, and a quiet meter test can tell you whether you have one.
Plumbing problem in Wynmere?
Call (215) 714-6692 and tell us your block, the house type and what you see. We will talk through the next step.
Water heater replacement and the Horsham permit
Horsham Township lists plumbing fixtures, water heaters included, among the work that needs a permit. Code Enforcement is at 1025 Horsham Road and can be reached at (215) 643-3131. The township says inspections generally need 24 to 48 hours of notice, and it can fine work begun before a permit.
If your tank is leaking at the seams, replacement is the usual answer. If it leaks at a fitting or valve, a repair may be enough. A plumber looking at the tank, the fittings and the drain pan can tell you which. See our notes on water heater replacement and water heater repair.
| Situation | Who to call first | What to have ready |
|---|---|---|
| Drain backs up in the lowest fixture | Authority checks the street main, then a plumber | Which fixtures are slow, and whether a neighbor has the same problem |
| Water stain on a shared wall | A plumber, and tell your neighbor | Where the stain is and whether it is growing |
| Water heater leaking at the base | A plumber, after shutting off the supply | Tank age if the label shows it, and the fuel type |
| Pressure drop at every fixture | Check the main shutoff, then a plumber | Whether the neighbors see it too |
Before you call, a short checklist
What helps the first conversation
- Find the main shutoff and confirm it turns.
- Note the street address and which floor the problem is on.
- Take a photo of the leak, the stain or the water heater label.
- Say whether the problem affects one fixture or the whole house.
- If it is a backup, say which drains gurgle and when.
For drains, see drain cleaning and sewer line cleaning. For a hidden leak, see leak detection. For a failing supply line, see water line repair.
Map of the Wynmere area
The map shows Wynmere Drive and the area around it in Horsham Township.
Plumbing questions in Wynmere
Yes. Public listings place the Wynmere subdivision on Wynmere Drive in Horsham Township with a 19044 ZIP, and its homes use public water and public sewer.
The Authority is responsible for the service lateral out to the right-of-way, and you own the building lateral from the house to that line. Call the Authority at (215) 672-8011 to have the street main checked, then call a plumber if the main is clear.
Horsham Township lists plumbing fixtures including water heaters among the work that needs a permit. Call Code Enforcement at (215) 643-3131 to confirm what applies to your job.
The Authority says most basic homeowner policies do not. Ask your insurer about sewer, drain and sump pump backup coverage.
Shut off the water if you can, photograph the stain, and tell your neighbor. Then call a plumber to find the source, since the leak may be on either side.
Sources we checked
Local facts on this page come from these public pages. Plumbing work in Pennsylvania falls under the Uniform Construction Code, which adopts the International Plumbing Code (IPC) provisions, so ask Horsham Code Enforcement which edition applies before a permit is pulled. Rules and phone numbers change, so confirm with the office before you act.
- coldwellbankerhomes.com/pa/horsham/94-wynmere-dr/pid_18873039 Real estate listing
- files.municipalone.com/horsham-pa/781020345012125pm.pdf Township plan
- horshamwater-sewer.com/history Authority
- horshamwater-sewer.com/sewer-backups Authority
- horshamwater-sewer.com/do-you-have-leak Authority
- horshamwater-sewer.com/sites/default/files/2026-02/horsham-water-se... Authority rules
- horsham.org/10737/Permits Township page