Low Water Pressure in Fairfax, VA

Fairfax has 61,521 occupied homes across 5 ZIP codes, and the typical one was built in 1985. That year is the most useful single fact for working out why the water pressure is weak, because it predicts what the supply pipe is made of.
Fairfax sits 1 year newer than the VA median of 1984. Of the 111 VA towns we route calls in, its housing is older than 49% of them, and by number of homes it ranks 4th.
What 1985 tells you about the pipe in Fairfax
Housing of this vintage generally means copper throughout in most cases, with polybutylene fitted in some homes built from the late seventies onward. Polybutylene was discontinued in the mid-nineties and is worth identifying, because its failures are sudden rather than gradual. More on 1980s supply pipe.
61% of occupied homes in Fairfax are owner-occupied, 19 points below the VA figure of 80%. It matters here because the run between the meter and the house belongs to the property owner, not the utility.
Median household income across Fairfax ZIP codes is $137,208, 68% above the VA median of $81,652.
Before calling anyone in Fairfax, 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 Fairfax
| ZIP | Typical build year | Occupied homes |
|---|---|---|
| 22030 | 1992 | 21,247 |
| 22031 | 1980 | 14,777 |
| 22032 | 1977 | 9,848 |
| 22033 | 1990 | 15,649 |
Nearby towns we cover
- Waterford typical build 1994 · 9 years newer
- The Plains typical build 1976 · 9 years older
- Annandale typical build 1968 · 17 years older
- Burke typical build 1981 · 4 years older
- Dumfries typical build 1994 · 9 years newer
- Dunn Loring typical build 1993 · 8 years newer
Worth reading for a 1985-era home
- pressure-reducing valves
- whole-house pressure loss
- polybutylene supply pipe
- how to test your pressure
- pressure drops when two taps run
ZIP codes we route in Fairfax
- 22030
- 22031
- 22032
- 22033
- 22035
Low water pressure help near me in Fairfax
Give us your Fairfax ZIP code and what is happening. We check it against partner coverage and connect you with an independent contractor covering that area. We do not do the work and you are never charged.