Gresham, Oregon Water Outage Today

Who runs the water in Gresham: system profile

City of Gresham is the water system EPA lists for Gresham, serving about 73,932 people. Customers know it as City of Gresham Water; the name on your bill is the one to call.

Where Gresham's tap water comes from

Gresham does not collect its own raw water. City of Gresham buys surface water from Rockwood Pud and Portland Water Bureau and distributes it through its own mains.

Why this matters when the water stops. Because the water arrives from Rockwood Pud, a break on that supplier's transmission main or a plant shutdown upstream can leave Gresham without water even when the local pipes are sound. Watch the supplier's alerts as well as City of Gresham Water.

Main breaks and shutoffs in Gresham: the usual causes

Water outages are local, so the likely cause depends on weather, pipe age and the grid. For Gresham, these stand out.

• Freezing weather. Gresham sees about 44 days a year with a low at or below 32°F, and 3 days at or below 20°F. The coldest morning in the 2015 through 2025 record came on January 13, 2024. The longest stretch with highs that never rose above freezing ran 4 days, ending January 3, 2016. Frozen service lines and meters cause single-address outages, while ground frost and thaw cycles crack older mains and produce the street-wide breaks.
• Long dry spells. The longest stretch without measurable rain since 2015 lasted 54 days, ending August 11, 2017. Dry soil shrinks and shifts around buried pipe, and breaks often cluster when the rain returns and the ground swells again.
• Younger pipe, different risks. Only 23.3% of occupied homes in Gresham predate 1970 (US 35.5%), so more of the network is newer plastic or ductile iron. Breaks tend to come from construction damage, pressure surges and weather rather than age.
• Flooding and heavy rain. NOAA logged 18 flood, flash flood and heavy rain reports in Multnomah County from 2015 through 2026, and 10 days a year bring an inch of rain or more. High water can wash out the ground under buried pipe, flood pump stations and push treatment plants past their limits, which is why boil notices so often follow a flood.
• Construction and third-party damage. A backhoe or boring crew that hits a main is among the most common reasons a single block goes dry without warning. Utilities handle those the same way as any break: isolate, repair, flush.
• One-address problems. A closed valve, a meter swap or a failed regulator can leave a single house dry. Compare notes with a neighbor first; if they have water too, start with your own plumbing.

Gresham weather and water-main stress, 2015–2025

Main break season in Gresham runs from late fall into early spring, with the coldest stretch around November through January.

A note on the numbers: they are modeled for the city center and averaged over eleven years, so they show how often Gresham sees each kind of weather, not what any one thermometer read on a given day.

Boil water advisories and the federal violation record for Gresham

Since 2015, EPA's record for City of Gresham shows no health-based violations. It also lists 2 monitoring or reporting entries that are about paperwork rather than water quality, such as a missed sample or a late report.

Most recent entries, all monitoring or reporting:

• July 2022: A missed or late disinfection byproduct monitoring sample It is marked resolved.
• July 2022: A missed or late disinfection byproduct monitoring sample It is marked resolved.

Boil water notices in Gresham are precautions, not findings. When pressure drops, City of Gresham Water tells affected customers to boil water until two rounds of lab tests are clean, a process that normally takes 24 to 48 hours after service is restored, under oversight from the Oregon Health Authority Drinking Water Services.

Lead service lines and old plumbing in Gresham

The most recent 90th-percentile lead result filed for City of Gresham is 3.4 ppb (2025). The federal action level is 15 ppb, so that result is far from the limit.

23.3% of occupied homes in Gresham were built before 1970, and lead service lines and solder stayed legal until the federal ban in 1986. After any outage that disturbs the pipes, run the cold tap 30 seconds to 2 minutes before drinking, and ask City of Gresham Water about its lead service line inventory.

When will the water come back on in Gresham?

Most repairs of an ordinary main break in Gresham take half a day once the crew is on site. Bigger mains, deep bury and busy roads stretch that to a day or more.

Ask City of Gresham Water for a restoration estimate when you report the outage; for large breaks it is normally posted and updated as the repair progresses.

Emergency water storage for Gresham households

The average household in Gresham has about 2.7 people, so FEMA's minimum of one gallon per person per day comes to roughly 8 gallons for three days and 38 gallons for two weeks.

• 17.1% of residents report a disability (US 13.3%), so check on neighbors who rely on running water for medical equipment.
• Do not forget the water heater: the tank holds roughly 30 to 50 gallons you can drink after it is switched off and allowed to cool.
• Fill the bathtub and a few large pots as soon as you hear a break is likely; that water is for flushing and washing, not drinking.

Gresham versus neighboring water utilities

Water outage pages for nearby cities

Portland, OR · Vancouver, WA · Hillsboro, OR · Salem, OR