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Leak Detection in Willow Grove, PA
Willow Grove is not a town of its own. It is a census designated place split between Upper Moreland and Abington townships, so your sewer provider depends on which side of the line you live on. Water comes from Aqua Pennsylvania, which offers no leak adjustments in this state.
- Service lines, slab and wall leaks in 19090 homes, twins and apartments
- Leak report you can hand to a plumber, landlord, insurer or Aqua
- Answered 24/7 from Easton Road to Moreland Road
Calls answered day and night. Emergency? Shut off your main valve first, then call.
Quick answer
My Willow Grove water bill doubled. What should I do first?
Read your Aqua meter at night and again in the morning with no water used. If it moved, you have a leak. Dye test the toilets, then close the main valve. If the meter still turns, the leak is probably in your service line. Aqua gives no leak credit in Pennsylvania, so find and fix it fast.
19090the Willow Grove ZIP code, shared by Upper Moreland and Abington
13,730residents in the Willow Grove CDP at the 2020 Census
64.3%owner occupied housing rate in the CDP (ACS 2020 to 2024)
Exit 343the PA Turnpike Willow Grove Interchange, a handy landmark
Willow Grove is two townships: why that matters for a leak
The Willow Grove census designated place covers parts of both Upper Moreland Township and Abington Township. Both sides get water from Aqua Pennsylvania, but sewer service differs: Upper Moreland homes use the Upper Moreland Hatboro Joint Sewer Authority, while Abington homes use the township’s own wastewater system. Permits and code offices differ too.
According to Wikipedia, the Willow Grove CDP lies in Abington and Upper Moreland townships and uses ZIP code 19090. The Census QuickFacts profile counted 13,730 residents in 2020 on 2.54 square miles of land. The 19090 ZIP code covers ground on both sides, so the township on your tax bill is the one that counts.
| Question | Upper Moreland side | Abington side |
|---|---|---|
| Water supplier | Aqua Pennsylvania | Aqua Pennsylvania (most of the township) |
| Sewer | Upper Moreland Hatboro Joint Sewer Authority | Abington Township Wastewater Department |
| Gas and electric | PECO | PECO |
| Township office | 117 Park Avenue, Willow Grove, 215-659-3100 | 1176 Old York Road, Abington, 267-536-1000 |
The Upper Moreland utility list comes from its Wikipedia entry, and the office details from the Upper Moreland Township website. The Abington details come from the Abington Township website, which says most of the township is on Aqua water and the township runs its own sewers.
Why should you care? A leak in your water service line is a water side problem, and Aqua and your plumber handle it. A cracked sewer lateral is a sewer side problem, and the authority you call depends on your township. Getting that right on the first call saves a day.
Why do homes in Willow Grove, PA leak?
Willow Grove’s housing is mostly postwar. In Upper Moreland, Census 2000 counted nearly 40 percent of homes as built from 1940 to 1959 and almost another 40 percent from 1960 to 1979. Those decades mean aging copper, galvanized steel in older houses, and plenty of shared plumbing in apartments and twins.
The Census 2000 housing profile for Upper Moreland shows a township that grew fast after World War Two and kept growing through the 1970s. Unlike Abington, which leans heavily toward pre 1960 houses, Upper Moreland has a bigger share of 1960s and 1970s construction.
| Era built | Upper Moreland share (2000) | Common leak points |
|---|---|---|
| 1939 or earlier | 9.3% | Galvanized supply, old curb stops, cast iron drains |
| 1940 to 1959 | 39.5% | Early copper, steel service lines, basement slab lines |
| 1960 to 1969 | 19.2% | Copper pinholes, slab on grade additions |
| 1970 to 1979 | 20.0% | Type M copper in walls, apartment risers |
| 1980 and later | 11.9% | Fittings, water heaters, irrigation |
Housing type matters as much as age here. That same profile counts 20.8 percent of Upper Moreland units in buildings of 10 or more apartments, plus another 13.5 percent in buildings of two to nine units. Shared walls and stacked bathrooms mean a leak upstairs often shows up in a neighbor’s ceiling first.
On the Abington side of 19090, the Abington Census 2000 profile shows 45.4 percent of homes built from 1940 to 1959. Either way, most Willow Grove plumbing is more than 45 years old.
Apartments, twins and condos: the Willow Grove leak angle
Willow Grove has more apartment and attached housing than most nearby towns, so many leak calls here are really about whose leak it is. A technician isolates each unit and riser, proves where the water starts, and writes it down, so the landlord, the condo association and the tenant can settle repair and insurance quickly.
The QuickFacts owner occupied rate for the Willow Grove CDP is 64.3 percent, so about a third of households rent. Compare that with 90.6 percent in the Montgomeryville CDP, per its own QuickFacts profile. Renters and landlords both have a stake in finding a leak fast, and neither wants to pay for the other’s repair.
Typical shared building leaks
- Shower pan or tub drain leaks dripping through to the unit below
- Toilet wax ring failures that stain the ceiling below
- Supply riser leaks inside a shared wall chase
- Water heater pans overflowing in closets
- Washing machine hoses in stacked laundry rooms
For these jobs the technician uses moisture mapping, thermal imaging and flood or dye testing, which is what our shower pan, tub and toilet leak detection service is built around. For larger buildings, see commercial and multifamily leak detection, which traces risers and shared lines unit by unit.
If water is coming through your ceiling from the unit above, shut off your own fixtures, take photos, notify the building manager in writing, and call us. A written leak report helps every party’s insurer.
Signs of a hidden leak in a Willow Grove home
In a Willow Grove single family home, the first clue is usually an Aqua bill spike or a meter that moves with nothing running. In apartments and twins it is a ceiling stain or a neighbor’s complaint. Outside, look for a soggy strip between the curb box and the house.
Bill and meter
- Aqua bill up sharply with no change in use
- Low flow indicator spinning overnight
- A faucet dripping once a second can waste over 3,000 gallons a year, per EPA WaterSense
Inside
- Ceiling stains under bathrooms
- Musty smell in a closet or wall chase
- Loose or cracked floor tile near a tub
- Warm spot on a slab floor
Yard and curb
- Wet ground near the curb box
- Green strip over the service line
- Sinking walk or driveway edge
- Running water sound at the meter
Pool and outdoor
- Pool level drops faster than evaporation
- Irrigation zone that never dries
- Yard hydrant leaking at the base
A slow leak can hide for months. EPA estimates that 10 percent of homes have leaks wasting 90 gallons or more a day. Our guide to slab leak signs has more clues for homes built on concrete.
Leak detection services for Willow Grove
Willow Grove calls split three ways: service line leaks at single family homes, unit to unit leaks in apartments and twins, and high Aqua bills with no obvious cause. A local technician brings acoustic gear, thermal imaging, tracer gas and a sewer camera, then uses whichever fits the problem.
- Water service line leak detection: the line from the curb stop to your house, tested and pinpointed before anyone digs.
- High water bill leak investigation: meter, fixture and line testing with a written finding.
- Hidden wall and ceiling leak detection: finds leaks behind drywall and plaster without tearing out walls.
- Slab leak detection: supply lines under basement floors and slab additions.
- Sewer lateral leak detection: camera and sonde work on the line to the sewer main.
- 24/7 emergency leak detection: water through the ceiling at 2 a.m.
When the sewer lateral is involved, the technician also notes which authority serves the address so you call the right office about anything on the public side.
How a Willow Grove leak detection visit works
The visit starts with what you have noticed, then the meter. The technician isolates the house plumbing from the service line, and in multi unit buildings isolates each unit. Acoustic listening and tracer gas pinpoint the leak, it gets marked, and you receive a written report the same day.
1
Phone triage
We ask what you see and help you close the main valve if water is coming in.
2
Isolate
The technician closes valves in sequence: house, unit, fixture or service line, watching the meter each time.
3
Pinpoint
Ground microphones, thermal cameras, moisture meters and tracer gas narrow it to a spot.
4
Report
The leak is marked and written up with photos, readings and the recommended repair.
What the written report covers
- Meter readings and timed flow tests
- Which unit, fixture or pipe section is leaking
- Marked location with photos
- Whether the leak is on the homeowner or utility side of the curb stop
- Recommended repair for your plumber
Who owns the service line, and what Aqua does about high bills in Willow Grove
Aqua’s service line inventory release says the utility owned part usually runs from the main to the curb stop, and the customer owns from the curb stop into the building. Your section is your repair. Aqua’s leak adjustment page says it does not offer leak adjustments in Pennsylvania.
| Pipe | Owner | Your move if it leaks |
|---|---|---|
| Main in the street | Aqua | Call Aqua at 877.987.2782 |
| Main to curb stop | Aqua, usually | Call Aqua |
| Curb stop to building | Property owner | Leak detection, then a plumber |
| Inside plumbing | Property owner (landlord in rentals) | Leak detection or a plumber |
| Sewer lateral | Property owner | Camera inspection; call your township’s sewer provider about the public side |
The ownership split comes from Aqua’s service line inventory announcement. The no credit policy is on Aqua’s leak adjustment request page. Aqua’s lead page also says it replaces customer owned lead or galvanized service lines at no direct cost, with a warranty.
Aqua is regulated by the Pennsylvania Public Utility Commission, which oversees more than 150 water and wastewater utilities, per the PUC water page. If you think a bill or meter reading is wrong, raise it with Aqua first, then the PUC if you cannot resolve it.
High bill checklist
- Compare the bill to the same month last year.
- Run an overnight meter test and toilet dye tests.
- Shut the main and watch the meter to split the house from the service line.
- Book leak detection and get the leak documented.
- Repair, keep receipts and confirm the next reading drops.
See our service line ownership guide for more on curb stops.
What a leak costs on a Willow Grove Aqua bill
Aqua’s Rate Zone 1 Main Division rates charge $22.40 a month for a 5/8 inch meter, $16.246 per 1,000 gallons for the first 2,000 gallons and $19.233 above that. The PUC’s example customer using 3,870 gallons a month pays $90.86. A hidden leak adds to that at the top rate.
Those figures come from Aqua’s Rate Zone 1 Main Division comparison sheet, effective February 22, 2025, and the PUC rate decision. Here is how a normal bill is built, then what leaks add.
| Line | Arithmetic | Amount |
|---|---|---|
| Service charge | flat | $22.40 |
| First 2,000 gallons | 2 x $16.246 | $32.49 |
| Next 1,870 gallons | 1.87 x $19.233 | $35.97 |
| Total for 3,870 gallons | $90.86 |
| Leak | Gallons in 30 days | Added water charge |
|---|---|---|
| 1/32 inch irrigation leak | about 6,300 | about $121 |
| Leaking riser, 0.5 gal/min | 21,600 | about $415 |
| Broken service line, 2.5 gal/min | 108,000 | about $2,077 |
Gallons divided by 1,000, times $19.233. The 6,300 gallon irrigation figure is EPA WaterSense’s estimate for a 1/32 inch leak. Sewer charges from your township provider are extra.
Detection itself typically runs about $150 to $600 nationally, and This Old House puts slab leak repair at about $2,300 on average. We quote detection on the phone. More in our Pennsylvania leak detection cost guide.
Willow Grove landmarks, roads and nearby areas
Willow Grove grew around Willow Grove Park, an amusement park opened in 1896 that closed in 1976 and is now the site of Willow Grove Park Mall. Routes 611 and 63 cross the area, the Turnpike’s exit 343 sits nearby, and SEPTA’s Warminster Line stops at Willow Grove station.
Wikipedia notes that the former Naval Air Station Joint Reserve Base Willow Grove was actually northwest of the CDP in Horsham Township and became the Horsham Air National Guard Station in 2011. Despite the name, it is Horsham’s history, and our Horsham leak detection page covers how the base affected that township’s water supply.
| Area | Township | Local notes |
|---|---|---|
| Willow Grove CDP, Upper Moreland part | Upper Moreland | Township offices on Park Avenue; Upper Moreland Hatboro sewer |
| Willow Grove CDP, Abington part | Abington | Willow Grove Park Mall; Abington wastewater |
| Upper Moreland, 19040 area | Upper Moreland | Hatboro mailing addresses; shared sewer authority with Hatboro |
| Upper Moreland, 19006 area | Upper Moreland | Huntingdon Valley mailing addresses |
Upper Moreland’s ZIP codes are 19006, 19040 and 19090, and Pennypack Creek runs through the township. The 1916 boundary through the creek is what split Upper and Lower Moreland.
Neighboring areas we cover include Abington, Warminster and Warrington.
Willow Grove water supply, storms and winter notes
Aqua’s supply can be strained by extreme weather. After Tropical Storm Ida flooded Aqua’s Pickering plants in 2021, Upper Moreland relayed Aqua’s request to stop nonessential water use. In winter, frost reaches roughly 24 to 42 inches in Pennsylvania, enough to crack shallow or exposed pipes.
Patch reported on September 2, 2021, that Aqua asked customers across its southeastern Pennsylvania service area to stop nonessential water use until further notice, after Ida’s flooding damaged the Pickering East and West plants in Phoenixville.
For winter, the Penn State PHRC freeze depth guide puts Pennsylvania frost depth at about 24 to 42 inches. Garages, crawl spaces, and pipes in exterior walls of apartments are the usual trouble spots.
- Keep heat at least in the 50s in vacant units and closed rooms.
- Close inside valves to hose bibs and drain them before winter.
- Insulate the meter and the pipe where it enters through the foundation.
- After a freeze, book a burst pipe leak check before the next bill arrives.
On the PFAS question: the ATSDR fact sheet names Horsham and Warrington as the public water systems affected near the former base. Willow Grove itself is served by Aqua.
Gas leak safety in Willow Grove: PECO
PECO supplies natural gas on both sides of Willow Grove. If you smell gas, get everyone out first, then call 911 or PECO at 800-841-4141 from outside. If that line is busy, the Inquirer lists 844-841-4151 as a gas only backup number.
Those numbers come from the Philadelphia Inquirer gas leak guide.
Before you dig
Planning a sewer or water line repair? Call 811 at least three business days before digging, as the PUC requires.
For customer side gas lines, such as a failed pressure test after a furnace swap, see gas line leak detection. Browse the whole Bucks and Montgomery County area or return to the homepage.
Leak Detection Services in Willow Grove, PA
Every leak detection service below is available in Willow Grove, 24 hours a day. Each link explains the testing method, what goes in the written report and the repair options; the sections above cover what is different about Willow Grove. See the full services list for a side by side overview.
Slab Leak Detection
Leaks under basement floors and slab additions, pinpointed through the concrete.
Water Service Line Leak Detection
The line from the curb stop or main to your house, traced and pinpointed.
Hidden Wall and Ceiling Leak Detection
Leaks behind plaster, drywall and finished basements, found without demolition.
Frozen and Burst Pipe Leak Detection
Every freeze crack found after a cold snap, including the ones not dripping yet.
Pool and Hot Tub Leak Detection
Lines, skimmers, returns, lights and shells tested so every leak point is found.
Gas Line Leak Detection
Customer-side gas leaks and failed pressure tests located for repair.
Sewer Lateral and Drain Leak Detection
Camera, sonde, smoke and flood testing for cracked laterals and drains.
Shower Pan, Tub and Toilet Leak Detection
Flood and dye testing so the right fixture gets fixed.
Irrigation and Outdoor Line Leak Detection
Zone by zone testing of sprinklers, yard hydrants and outdoor lines.
High Water Bill Leak Investigation
Meter, pressure and fixture testing plus a report for your utility.
Commercial and Multifamily Leak Detection
Risers, shared lines and tenant units traced to the source.
24/7 Emergency Leak Detection
Water through a ceiling or a meter spinning hard, answered any hour.
Other Areas We Cover Near Willow Grove
Abington
Leak detection in Abington, PA
Horsham
Leak detection in Horsham, PA
Warminster
Leak detection in Warminster, PA
Warrington
Leak detection in Warrington, PA
Bensalem
Leak detection in Bensalem, PA
See every town we cover in the Bucks and Montgomery County Area, or browse all Pennsylvania service areas.
Guides worth reading before you book
Frequently Asked Questions
Is Willow Grove its own municipality?
No. Willow Grove is a census designated place that lies in parts of Upper Moreland and Abington townships. Your township determines your sewer provider, permits and code office.
Who supplies water in Willow Grove?
Aqua Pennsylvania serves Upper Moreland and most of Abington, so nearly all Willow Grove homes are Aqua customers. Check your bill to confirm.
Who handles sewer in Willow Grove?
On the Upper Moreland side it is the Upper Moreland Hatboro Joint Sewer Authority. On the Abington side it is Abington Township’s wastewater system.
Will Aqua credit my bill for a leak?
No. Aqua states that it does not offer leak adjustments in Pennsylvania, so the fastest fix is the cheapest one.
Who pays for a leak between the curb and my house?
You do. Aqua usually owns from the main to the curb stop, and the property owner owns from the curb stop into the building.
A leak upstairs is coming through my ceiling. Who pays?
It depends on your lease or condo documents and where the leak starts. A written leak detection report showing the source helps the landlord, association and insurers sort it out.
Did the Willow Grove naval base affect Willow Grove’s tap water?
The ATSDR fact sheet names Horsham and Warrington as the public systems affected near the former base, which was in Horsham Township. Willow Grove homes are on Aqua.
How much does a running toilet add to an Aqua bill?
About 4,320 gallons a month at 0.1 gallons per minute, or roughly $83 at Aqua’s Rate Zone 1 upper rate of $19.233 per 1,000 gallons.
What ZIP codes do you cover around Willow Grove?
19090 plus the rest of Upper Moreland (19006 and 19040) and all of Abington Township.
Who do I call if I smell gas in Willow Grove?
Leave first, then call 911 or PECO at 800-841-4141. The backup gas only line is 844-841-4151.
Can you come at night?
Yes. Call (833) 768-3032 any hour and we will connect you with a local technician.
Hearing Water You Cannot See? Call Now.
A rising water bill, a wet basement wall or a soggy strip of lawn will not fix itself. Call any hour and we will help you find the leak, prove it and keep the repair as small as possible.
Answered 24 hours a day, 7 days a week.
Sources
- Wikipedia: Willow Grove, Pennsylvania
- Wikipedia: Upper Moreland Township
- Upper Moreland Township website
- Abington Township: About and utilities
- U.S. Census QuickFacts: Willow Grove CDP
- U.S. Census QuickFacts: Montgomeryville CDP
- Census 2000 DP-4 housing profile, Upper Moreland township (PA State Data Center)
- Census 2000 DP-4 housing profile, Abington township (PA State Data Center)
- Aqua: Leak adjustment request (PA policy)
- Aqua: Customer service line inventory press release
- Aqua: Lead in Pennsylvania
- Aqua: Water Rate Zone 1 Main Division rate comparison
- PA PUC: Aqua PA rate decision, February 2025
- PA PUC: Water and wastewater utilities
- Patch: Aqua nonessential water use request after Ida (2021)
- ATSDR: Evaluation of PFAS in drinking water near Willow Grove (2020)
- Philadelphia Inquirer: How to report a gas leak
- EPA WaterSense: Fix a Leak Week
- This Old House: Slab leak repair cost
- Penn State PHRC: Soil freeze depth guide
- PA PUC: PA One Call
Pennsylvania Leak Detection is a leak detection referral service. Calls connect you with an independent local leak detection professional. Figures and utility policies were checked in October 2026 and can change; confirm with your utility.