West Haven-Sylvan, OR water hardness

Tap water hardness
21mg/L
1.2gpg
Soft

Reported by Portland Water Bureau · October 2025

OR typical
24 mg/L
EPA health violations since 2016
1
Data
Utility report

Tap water in West Haven-Sylvan has about 21 mg/L of hardness, which is 1.2 grains per gallon. On the USGS scale that counts as soft. The number comes from Portland Water Bureau, dated October 2025.

West Haven-Sylvan on the hardness scale, with nearby cities
060120180240300360+OR typical 24Cedar Mill: 23 mg/LCedar Mill 23Garden Home-Whitford: 23 mg/LGarden Home-Whitford 23Bethany: 23 mg/LBethany 23Aloha: 23 mg/LAloha 23West Slope: 35 mg/LWest Slope 35Cedar Hills: 35 mg/LCedar Hills 35Raleigh Hills: 35 mg/LRaleigh Hills 35Marlene Village: 35 mg/LMarlene Village 35Beaverton: 35 mg/LBeaverton 35Oak Hills: 35 mg/LOak Hills 35West Haven-Sylvan 21mg/L as calcium carbonate060120180240300360+OR 24Cedar Mill: 23 mg/LCedar Mill 23West Slope: 35 mg/LWest Slope 35Cedar Hills: 35 mg/LCedar Hills 35Raleigh Hills: 35 mg/LRaleigh Hi. 35Marlene Village: 35 mg/LMarlene Vi. 35Beaverton: 35 mg/LBeaverton 3521 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 21 mg/L, West Haven-Sylvan is close to the typical Oregon figure of 24 mg/L. None of the 10 nearest cities we track has softer water. The range nearby runs from 23 mg/L in Cedar Mill to 35 in West Slope.

What 21 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Nothing, as far as hardness goes. At 21 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for West Haven-Sylvan's water system

Portland Water Bureau · PWSID OR4100657

1 health-based violation since 2016

Serves about 666,200 people from surface water.

Health-based
1
Monitoring or reporting
1
Open now
1

TapWaterData ties West Haven-Sylvan to this system. EPA's service-area records do not name West Haven-Sylvan, so check the utility printed on your water bill.

20162017201820192020202120222023202420252026Surface Water Treatment Rule (LT2)'16'18'20'22'24'26Surface Water Treatment Rule (LT2)
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Surface Water Treatment Rule (LT2)filtration and disinfection120171 open

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is West Haven-Sylvan water hard?

No. It measures about 21 mg/L (1.2 grains per gallon), which the USGS classes as soft.

What is the water hardness in West Haven-Sylvan in grains per gallon?

About 1.2 gpg. One grain per gallon equals 17.1 mg/L, so 21 mg/L divided by 17.1 gives 1.2.

Has the West Haven-Sylvan water system had EPA violations?

EPA records show 1 health-based violation for Portland Water Bureau since 2016, involving Surface Water Treatment Rule (LT2). There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.

Nearby cities

All 53 cities in Oregon

Hardness data: TapWaterData US Water Hardness (utility report, October 6, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.