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Low water pressure · diagnosed first
Low Water Pressure in Seattle, Washington 98101
The typical home here dates from 1970, which predicts the supply pipe. Whole house or one tap, and who to call.
Free to homeowners in Seattle — the contractor pays us for the introduction, you never do.
The short answer
Housing in Seattle runs to a median build year of 1970. Pipe of that era fails in more than one way, so the useful first step is counting weak taps: every tap points at the supply, one tap points at that fixture.
Source: US Census Bureau, American Community Survey 5-year estimates, table B25035.
Seattle has 449,590 occupied homes across 60 ZIP codes. Across all its housing, vacant units included, the median build year is 1970 — the most useful single fact for working out why the water pressure is weak, because it predicts what the supply pipe is made of.
What this site is
PressureTrace is a referral service, not a plumbing contractor. We connect homeowners with independent contractors. Contractors are required to hold whatever credential their state or municipality demands. Every state page sets out who licenses plumbers there and where to check, so you can confirm before work begins. We do not perform plumbing work, we do not set prices, and we never charge homeowners anything — the contractors in our network pay us when we route them a call.Seattle sits 20 years older than the WA median of 1990. Of the 70 WA towns we route calls in, its housing is older than 99% of them, and by number of homes it ranks 1st.
What 1970 tells you about the pipe in Seattle
Housing of this vintage generally means copper as the usual supply material, so corrosion narrowing the pipe is far less likely. In houses of this era a whole-house pressure drop points at the pressure-reducing valve, the main shut-off, or the supply side of the meter rather than at the pipe itself. More on 1970s supply pipe.
47% of occupied homes in Seattle are owner-occupied, 13 points below the WA figure of 60%. It matters here because the run between the meter and the house belongs to the property owner, not the utility.
Median household income across Seattle ZIP codes is $114,030, 9% above the WA median of $104,427.
Source: US Census Bureau, American Community Survey 5-year estimates, 2023 release — tables B25003 (occupied units), B25035 (all units) and B19013 (households). How these are aggregated.
Before calling anyone in Seattle, check whether every tap is weak or just one. Normal supply is 45–80 psi and under 40 psi is low — how to test it in a minute. Whole house is a supply problem worth a call; one tap is usually a five-minute job you can do yourself.
Build year and occupied homes by ZIP code in Seattle
| ZIP | Typical build year | Occupied homes |
|---|---|---|
| 98101 | 1997 | 11,237 |
| 98102 | 1972 | 16,858 |
| 98103 | 1967 | 26,105 |
| 98104 | 1987 | 9,035 |
| 98105 | 1975 | 18,106 |
| 98106 | 1980 | 11,496 |
| 98107 | 1992 | 15,434 |
| 98108 | 1969 | 8,526 |
| 98109 | 2003 | 20,583 |
| 98112 | 1944 | 10,918 |
| 98115 | 1960 | 23,403 |
| 98116 | 1973 | 13,386 |
| 98117 | 1950 | 14,588 |
| 98118 | 1966 | 18,593 |
| 98119 | 1968 | 13,861 |
| 98121 | 2004 | 13,832 |
| 98122 | 1987 | 23,153 |
| 98125 | 1973 | 20,148 |
| 98126 | 1963 | 10,053 |
| 98133 | 1974 | 23,191 |
| 98134 | 1970 | 210 |
| 98136 | 1959 | 7,872 |
| 98144 | 1973 | 15,696 |
| 98146 | 1965 | 10,507 |
| 98148 | 1977 | 4,050 |
| 98155 | 1969 | 13,959 |
| 98166 | 1960 | 9,068 |
| 98168 | 1964 | 12,503 |
| 98177 | 1960 | 7,990 |
| 98178 | 1960 | 9,462 |
| 98188 | 1975 | 11,208 |
| 98198 | 1975 | 14,494 |
| 98199 | 1960 | 10,065 |
Nearby towns we cover
- Ravensdale typical build 1988 · 18 years newer
- Redmond typical build 1995 · 25 years newer
- Renton typical build 1989 · 19 years newer
- Snoqualmie typical build 2003 · 33 years newer
- Woodinville typical build 1987 · 17 years newer
- Sammamish typical build 1995 · 25 years newer
Worth reading for a 1970-era home
- pressure-reducing valves
- whole-house pressure loss
- galvanized supply pipe
- a main shut-off left part-closed
- how to test your pressure
ZIP codes we route in Seattle
- 98101
- 98102
- 98103
- 98104
- 98105
- 98106
- 98107
- 98108
- 98109
- 98111
- 98112
- 98113
- 98114
- 98115
- 98116
- 98117
- 98118
- 98119
- 98121
- 98122
- 98124
- 98125
- 98126
- 98127
- 98129
- 98131
- 98132
- 98133
- 98134
- 98136
- 98138
- 98139
- 98141
- 98144
- 98145
- 98146
- 98148
- 98154
- 98155
- 98158
- 98160
- 98161
- 98164
- 98165
- 98166
- 98168
- 98170
- 98174
- 98175
- 98177
- 98178
- 98181
- 98185
- 98188
- 98190
- 98191
- 98194
- 98195
- 98198
- 98199
Low water pressure help near me in Seattle
Have the Seattle ZIP code ready and say what the taps are doing. We route it to an independent contractor who covers that area. We are not the contractor, we do none of the work, and you are never charged for the call or the referral. We are named for pressure and not limited to it.
Low Water Pressure coverage in Seattle, WA
Seattle is in King County, Washington. It covers 60 ZIP codes: 98101, 98102, 98103, 98104, 98105, 98106, 98107, 98108, 98109, 98111, 98112, 98113, 98114, 98115, 98116, 98117, 98118, 98119, 98121, 98122, 98124, 98125, 98126, 98127 and 36 more. We route low water pressure calls from every one of them.
What happens when you call
No form, no quote tool, no waiting for an email.
- You tell us what the water is doingOne short conversation. If it turns out to be something you can fix in five minutes, we will say so.
- We route the call in SeattleWe match 98101 to an independent contractor who already covers Seattle — not a call center three states away.
- They quote, you decideWe do not set prices and we never charge you. The contractor pays us for the introduction.