Longmont's median home was built in 1991, but about 37% of houses predate 1980, mostly in the older neighborhoods around downtown Main Street. Those are the homes where worn copper or galvanized supply pipe most often leads to a repipe with PEX or copper. Call the number on this page to be connected with a local plumber in Longmont.
Which Longmont homes are likely candidates?
Longmont was founded in 1871 by the Chicago-Colorado Colony, and its older housing sits close to the historic downtown along Main Street and St. Vrain Creek. Census survey data shows about 37.1% of homes in the city were built before 1980. In those houses, original supply pipe can be 45 years old or more, and galvanized steel in particular narrows with rust until flow suffers. Newer areas such as Prospect New Town and the subdivisions that pushed the median build year to 1991 are much less likely to need a full repipe. There, a recurring leak more often traces back to one fitting type or freeze damage.
Does Longmont's water play a role?
Less than in many metro towns. The City of Longmont reports soft water, typically 1 to 2 grains per gallon, disinfected with chlorine. Heavy mineral scale is rarely what chokes pipes here, so when Longmont owners see weak flow, age and corrosion in older metal pipe are the usual suspects. The city's service line inventory classified every water service line in Longmont as non-lead, and it updates that record when maintenance exposes a line. That inventory describes the line coming into the house, not the copper, galvanized or plastic pipe running inside it.
Who signs off on the work?
City of Longmont Building Services requires a permit for any change to plumbing systems, and a repipe qualifies. Applications go through the Development Services Center at 385 Kimbark Street, and the plumber normally files them and schedules the inspection. The pages reviewed for this site do not spell out exactly where the city's side of the water service line ends and the owner's begins, so ask the plumber to confirm with the city before replacing any buried line in the yard. Sewer service lines, for comparison, are clearly owned and maintained by the property owner.
One more Longmont note
If you have a sprinkler system or another backflow assembly, keep it in mind during a repipe. Longmont requires new or replacement assemblies to be RPZ type unless the city approves otherwise, with a miscellaneous permit and annual tests filed through its SwiftComply portal. A plumber reworking supply lines near the irrigation connection should account for that.
Repiping questions in Longmont
What pipe materials show up in older homes around here?
Does hard water shorten the life of supply pipes?
Who handles the permit for a repipe here?
Can a hard freeze damage old pipe enough to justify a repipe?
More plumbing services in Longmont
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