DuPage & Will Counties
Plumbing help in Naperville
Most Naperville homes are newer than Chicago’s, with full basements, sump pumps and plastic drain lines. The common problems — and the permit process — are different.
Calls are answered by a referral service that connects you with a local plumbing provider. How this works
Naperville homes
Naperville is a city of about 150,000 people (2020 Census) spanning DuPage and Will Counties. Housing ranges from the older core near downtown to large subdivisions built from the 1970s onward; one ACS-based estimate puts the median year built around 1990.
| Home type | Plumbing themes |
|---|---|
| 1970s–1980s two-story and split-level | Original water heaters long replaced at least once; aging copper; sump systems |
| 1990s–2000s subdivisions | Sump pumps and battery backups; basement bathrooms (ejector pumps); water heater replacement cycles |
| Older homes near downtown | Older drain and sewer materials; tree roots in building sewers |
| Townhomes | HOA rules on exterior and shared elements |
Patterns only. Median-year estimate from a secondary ACS-based source; to be re-verified.
Common needs
Drain cleaning
Kitchen lines, basement floor drains, building sewers. Drain cleaning in Naperville
Sump pumps
Groundwater handling and backup power. Sump pumps in Naperville
Water heaters
Replacement in homes on their second or third tank. Water heaters in Naperville
- Drain tile collects groundwater around the foundation.
- Primary pump runs on household power.
- Battery backup pump can run during an outage, for a limited time.
- Check valve keeps discharged water from falling back into the pit.
- Discharge outlet — local rules may say where it can discharge.
Naperville permits
Naperville says all plumbing contractors must submit required documentation with any building permit application that includes plumbing work — even if they have registered with the City before — and that applications without it will not be considered. Residential permits are applied for through the City’s online permitting portal.
The City’s building permit guide lists some work that does not need a permit, including in-kind water softener replacement.
Source: City of Naperville — Guide to Building Permits (PDF)
What we could not confirm
- Whether a like-for-like water heater replacement needs a permit in Naperville (third-party sites say yes; not confirmed on a City page in our review).
- Current plumbing permit fees.
- Details of Naperville’s local amendments to the Illinois Plumbing Code.
Check with the official source before relying on these points.
Sources
- City of Naperville — Plumbing Permit Official / primary
- City of Naperville — Guide to Building Permits (PDF) Official / primary
- Naperville housing age (ACS 2020–24 via listing aggregator) Secondary
Information can change; official sources control.