Onondaga County
Leaking Gas Water Heaters in DeWitt: What to Shut Off First
Four in five Town of DeWitt homes heat with gas, and National Grid counts a continuous leak from a gas water heater as a gas emergency. Make the tank safe first, then tell us what it is doing and we connect you with a licensed, insured plumber for the water side.
Request a quote in DeWitt
Tell us what the water is doing, whether it has stopped and whose home it is. A person reads every request and matches it to a licensed, insured plumber for the part that cannot wait. We cannot promise how soon a request sent at night is read, so close the main shutoff first.
Would you rather talk it through? Call (315) 640-3590.
$100 off your first job
Credited by us on your first booked job.
- One credit per customer per property, on your first booked job.
- Valid through December 31, 2026.
Mention this offer when you book. Full terms.
What four gas homes in five mean for a DeWitt tank

ACS 2020 to 2024 estimates give the Town of DeWitt a median year built of 1963 across 10,996 housing units, with 79.3 percent of occupied units heating with utility gas, among the highest in this metro, 26.4 percent renter occupied, and 6.5 percent of units vacant.
Source: US Census Bureau, American Community Survey 2020 to 2024 five year estimates, accessed 2026-09-24
National Grid's list of what it considers a gas emergency includes a continuous flow of water leaking from a gas heating unit or water heater, along with an abnormally high or low flame or no gas at all gas appliances, gas to an appliance that cannot be shut off, roaring, hissing or whistling from gas pipes, and symptoms of carbon monoxide exposure such as headache, nausea, lethargy and disorientation.
Source: National Grid, accessed 2026-09-24
National Grid states it is the customer's responsibility to maintain gas lines that begin at the outlet of the gas meter and extend above or below ground on the property, and recommends periodically hiring a professional plumbing or heating contractor or leak survey expert.
Source: National Grid, accessed 2026-09-24
DeWitt water heater leaking and it runs on gas?
Smell gas: leave first. No smell: gas control off, cold inlet closed. Then send us what you see and a licensed plumber takes the water side.
Why a DeWitt water heater leak goes on National Grid's list
An estimated 79.3 percent of DeWitt households heat with utility gas, among the highest shares in the metro, with a 1963 median build year. That makes the water heater emergency in DeWitt a gas question before it is a plumbing one. National Grid's own list of gas emergencies includes a continuous flow of water leaking from a gas water heater, along with an abnormal flame or appliances losing gas. If you smell gas, leave first, touch no switches on the way out, and report it from outside. If there is no smell, turn the heater's gas control to off and close the cold inlet valve, then keep people away from the drain valve, because a full tank is scalding. Know which side is whose: National Grid holds the customer responsible for the gas piping from the meter outlet onward, so the line to the heater is yours to have checked by a professional. Where OCWA supplies DeWitt's water, a burst elsewhere in the house is stopped at the valve inside the foundation wall. About 6.5 percent of DeWitt homes stand vacant, enough that an empty house next door is worth a look in a hard freeze.

DeWitt emergencies we connect gas-heated homes with a plumber for
Burst and Frozen Pipe Emergencies
Stop the water coming out of a burst or frozen pipe, keep the damage from spreading, and get a licensed plumber in for the part that cannot wait until morning.
Burst and Frozen Pipes in DeWitt →Leaking Water Heater and No Hot Water
Make a leaking or failed water heater safe, stop the water feeding it, and find out whether this is a tonight problem or a job that can wait for a daylight quote.
Water Heater Emergencies in DeWitt →Sewage Backups and Overflowing Toilets
Stop sewage or an overflow from getting worse, find out whether the problem is in the public sewer, and get a licensed plumber for the part that is yours.
Sewage and Overflows in DeWitt →Tell us what the DeWitt tank is doing
Dripping, pouring or cold, and whether you noticed any gas smell. No obligation either way.
