Four agencies, four sets of rules, four different correction processes. Here's how DOB, HPD, DEP, and OATH divide plumbing enforcement - and why fixing one violation doesn't always fix the problem.
A leaking pipe in a Brooklyn apartment building can generate violations from two different city agencies on the same day. A failed backflow preventer can trigger a third. And if any of those violations go unanswered, a fourth agency steps in to collect penalties.
This is the reality of plumbing enforcement in New York City. The Department of Buildings, the Department of Housing Preservation and Development, the Department of Environmental Protection, and the Office of Administrative Trials and Hearings all have jurisdiction over different aspects of plumbing - and they don't coordinate with each other.
Property owners who fix the DOB violation but miss the HPD violation, or who correct the plumbing condition but forget about the DEP filing, end up paying twice. This guide breaks down which agency handles what, how their violation processes differ, and what you actually need to do to clear every open item on your property.
The Four Agencies at a Glance
Before diving into specifics, here's the high-level breakdown of who does what:
| Agency | What They Regulate | How Violations Start | Where to Resolve |
|---|---|---|---|
| DOB | Construction, permits, building code compliance, gas piping | Inspector finds code violation; unpermitted work discovered; LL152 non-compliance | DOB NOW; Certification of Correction filed with AEU |
| HPD | Habitability, housing maintenance, tenant living conditions | Tenant complaint or HPD inspection finds housing code violation | HPD Online; e-Certify system |
| DEP | Water supply, sewer connections, backflow prevention, cross-connections | Failed or missing backflow testing; improper sewer connection found | DEP directly; OATH for penalty hearings |
| OATH | Civil penalty adjudication for DOB, HPD, DEP, and other agencies | Uncorrected violations are referred for fines | OATH ECB Portal; in-person or video hearings |
The critical thing to understand: these agencies operate independently. Fixing a DOB violation does not automatically resolve an HPD violation for the same condition. Paying a DEP fine does not close a DOB case.
DOB: The Building Code Agency
The Department of Buildings regulates construction and building systems. For plumbing, DOB's jurisdiction covers whether the work was done correctly, legally, and with proper permits.
What DOB Cares About
DOB issues plumbing violations when the physical work or installation doesn't meet the NYC Plumbing Code or the NYC Fuel Gas Code. Their focus is on the system itself - how it was built, whether it was permitted, and whether it meets technical standards.
- Work performed without a DOB plumbing permit.
- Gas piping installations that don't meet code.
- Failure to file Local Law 152 gas piping inspection certifications.
- Cross-connections between potable and non-potable water systems.
- Plumbing alterations that weren't signed off by the Department.
DOB Violation Classes
DOB uses a three-tier classification system. Class 1 violations are immediately hazardous and require immediate correction. Class 2 violations are major but not immediately dangerous, like unpermitted work with no active hazard. Class 3 violations are lesser issues, such as administrative gaps, missing sign-offs, or minor code deviations.
How to Resolve a DOB Plumbing Violation
DOB violations require correction by a Licensed Master Plumber. The LMP performs the corrective work, pulls any necessary permits, and files a Certification of Correction through DOB NOW with supporting documentation. DOB then processes the certification, typically in 30 to 60 days, and dismisses the violation if everything checks out.
The key requirement: Only a Licensed Master Plumber can perform and certify plumbing corrections for DOB.
HPD: The Housing Conditions Agency
HPD regulates the conditions tenants live in. Where DOB asks whether the work was built to code, HPD asks whether the apartment is habitable.
What HPD Cares About
HPD doesn't care whether your plumbing permit was filed correctly. They care whether tenants have running water, hot water, heat, and functional drains. HPD violations are about the outcome for occupants, not the technical compliance of the installation.
- No hot water or inadequate hot water temperature.
- No heat during heating season, October 1 through May 31.
- Leaking pipes causing water damage to apartments.
- Clogged or non-functional drains.
- Toilet or fixture failures.
- Water damage to ceilings, walls, or floors from plumbing leaks.
HPD Violation Classes
Class A - Non-Hazardous
Minor maintenance issues such as a dripping faucet, minor paint peeling from a past leak, or a missing escutcheon plate.
- Correction deadline: 90 days.
- Daily penalties for non-correction: $10 to $50 per day.
Class B - Hazardous
Conditions that affect health and safety but are not immediately dangerous, such as persistent leaks, broken fixtures, or inadequate hot water.
- Correction deadline: 30 days.
- Daily penalties: $25 to $100 per day.
Class C - Immediately Hazardous
Conditions that pose an immediate threat, such as no heat, no hot water, sewage backup into an occupied apartment, or lead paint hazards.
- Correction deadline: 24 hours.
- Daily penalties: $50 to $250 per day.
- Heat and hot water violations carry a special penalty of $250 per day.
How HPD Violations Start
HPD violations are almost always complaint-driven. A tenant calls 311 or files a complaint directly with HPD. HPD schedules an inspection. If the inspector confirms the condition, they issue a violation on the spot.
How to Resolve an HPD Violation
You fix the condition, then certify the correction through HPD's e-Certify system online. HPD may re-inspect within 70 days of receiving your certification. If the condition has been corrected, the violation is closed.
Here's where it gets tricky: fixing the HPD violation might not fix the DOB violation. Restoring hot water may solve the habitability problem, but DOB can still have an open case if the water heater was installed without a permit.
DEP: The Water and Sewer Agency
The Department of Environmental Protection manages NYC's water supply and sewer system. Their plumbing jurisdiction is narrower than DOB's or HPD's, but it covers areas those agencies don't touch.
What DEP Cares About
DEP's focus is on protecting the public water supply and ensuring proper sewer connections. Their plumbing-related enforcement centers on backflow prevention device compliance, cross-connection control, and sewer connection compliance.
Backflow Prevention: The Most Common DEP Violation
Every property in NYC with a backflow prevention device is required to have it tested annually by a certified tester. The test results must be filed with DEP. If you miss the annual test or fail to file the report, DEP issues a summons.
Penalties start at $500 per device for a first offense and escalate to $10,000 for continued non-compliance. DEP violations are heard at OATH, not at DOB or HPD.
How DEP Violations Differ
DEP violations follow a different track entirely. There's no Certification of Correction filed through DOB NOW. Instead, you have the device tested by a certified backflow tester, file the results with DEP, and either pay the fine or contest it at an OATH hearing.
The overlap risk:A backflow device that fails testing might generate a DEP violation for the failed test and a DOB violation if the device's installation doesn't meet code.
OATH: The Penalty Enforcement Agency
OATH, formerly known as ECB, doesn't issue original violations. Instead, it adjudicates civil penalties for violations referred by DOB, HPD, DEP, FDNY, and other agencies.
When OATH Gets Involved
- A violation goes uncorrected past its deadline.
- A DOB violation includes an ECB summons.
- A DEP violation triggers a hearing.
- An HPD violation with accumulating daily penalties is referred for enforcement.
The OATH Hearing Process
When you receive an OATH summons, you have 40 to 60 days to respond. You can admit liability and pay the fine through the OATH ECB Portal, or plead not guilty and request a hearing. Hearings can be held in person or by video.
At a hearing, the hearing officer reviews the violation, examines evidence such as corrective work documentation, photographs, permits, and test certificates, and renders a decision. Penalties can often be reduced when an owner can demonstrate quick correction.
What Happens If You Ignore OATH
After 75 days of non-payment, OATH files a judgment lien on your property at 9 percent annual interest. The lien must be satisfied before the property can be sold or refinanced, and unpaid OATH judgments show up in title searches.
The Overlap Problem: One Condition, Multiple Violations
A single plumbing failure can generate violations from multiple agencies, and fixing one does not fix the others.
Example: A Leaking Riser in a Multifamily Building
HPD may issue a Class B or C violation because tenants report water damage or loss of adequate water pressure.
DOB may issue a Class 2 violation because the riser repair requires a plumbing permit, or a previous riser replacement was never permitted.
DEP may issue a separate summons if the riser includes a backflow preventer that hasn't been tested.
OATH may become involved if any of those items go unresolved and get referred for civil penalties.
How to Handle Multi-Agency Violations
- Identify every open violation. Search your property on DOB's BIS system, HPD Online, and DEP records.
- Hire one Licensed Master Plumber to handle the physical work. One LMP can fix the pipe, pull permits, and generate documentation for all agencies.
- File corrections with each agency separately. DOB, HPD, and DEP each have their own portal, forms, and timelines.
- Respond to any OATH summonses. Attend the hearings or respond online with documentation showing correction.
Quick Reference: Where to Look Up and Resolve Each Violation Type
| Agency | Lookup Tool | Correction Portal | Key Filing |
|---|---|---|---|
| DOB | BIS (a810-bisweb.nyc.gov) | DOB NOW | Certification of Correction + notarized statement |
| HPD | HPD Online (hpdonline.nyc.gov) | e-Certify | Online certification of corrected condition |
| DEP | DEP records / 311 inquiry | File test results with DEP | Annual backflow test report |
| OATH | OATH ECB Portal | OATH ECB Portal | Payment or hearing response within 40-60 days |
Why This Matters for Property Sales and Financing
Open violations from any agency - DOB, HPD, or DEP - show up in property records. They can block or delay the issuance of a Certificate of Occupancy, and title searches will flag unpaid OATH judgments and property liens. Lenders may refuse to close on a property with unresolved building or housing violations.
If you're planning to sell, refinance, or transfer a property, clearing all violations across all agencies isn't optional - it's a prerequisite.
Austin Plumbing & Heating: One Call for All Your Plumbing Violations
Navigating DOB, HPD, DEP, and OATH is complicated. The plumbing work isn't - not when you have the right Licensed Master Plumber.
At Austin Plumbing & Heating Co. Inc., we handle plumbing violations across all four agencies. We diagnose the physical condition, perform the corrective work, pull the permits, and prepare the documentation you need to close out violations with DOB, HPD, DEP, and OATH.
Call (718) 835-3555 or text (646) 773-2429 to schedule a violation review.
Austin Plumbing & Heating Co. Inc. - Licensed Master Plumber serving Brooklyn, Queens, Manhattan, and all five boroughs. Available 24/7 for emergencies.