Gladstone, OR water hardness

Tap water hardness
23mg/L
1.3gpg
Soft

Reported by Lake Oswego Municipal Water · April 2025

OR typical
24 mg/L
EPA health violations since 2016
8
Data
Utility report

Tap water in Gladstone has about 23 mg/L of hardness, which is 1.3 grains per gallon. On the USGS scale that counts as soft. The number comes from Lake Oswego Municipal Water, dated April 2025.

Gladstone on the hardness scale, with nearby cities
060120180240300360+OR typical 24Tigard: 22 mg/LTigard 22Jennings Lodge: 23 mg/LJennings Lodge 23West Linn: 23 mg/LWest Linn 23Oak Grove: 23 mg/LOak Grove 23Oregon City: 23 mg/LOregon City 23Happy Valley: 24 mg/LHappy Valley 24Lake Oswego: 26 mg/LLake Oswego 26Oatfield: 56 mg/LOatfield 56Tualatin: 77 mg/LTualatin 77Milwaukie: 120 mg/LMilwaukie 120Gladstone 23mg/L as calcium carbonate060120180240300360+OR 24Jennings Lodge: 23 mg/LJennings L. 23West Linn: 23 mg/LWest Linn 23Oak Grove: 23 mg/LOak Grove 23Oregon City: 23 mg/LOregon City 23Oatfield: 56 mg/LOatfield 56Milwaukie: 120 mg/LMilwaukie 12023 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 23 mg/L, Gladstone is close to the typical Oregon figure of 24 mg/L. Of the 10 nearest cities we track, 1 has softer water and 5 have harder. The range nearby runs from 22 mg/L in Tigard to 120 in Milwaukie.

What 23 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 23 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 Gladstone's water system

Gladstone, City of · PWSID OR4100321

8 health-based violations since 2016

Serves about 12,121 people from surface water.

Health-based
8
Monitoring or reporting
12
Open now
0

EPA lists Gladstone, City of as the system serving Gladstone. The hardness figure above comes from a different system's report, which TapWaterData uses for Gladstone.

20162017201820192020202120222023202420252026Haloacetic acids (HAA5)Total trihalomethanes (TTHM)'16'18'20'22'24'26Haloacetic acids (HAA5)Total trihalomethanes (TTHM)
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Haloacetic acids (HAA5)a disinfection byproduct42025Resolved
Total trihalomethanes (TTHM)a disinfection byproduct42025Resolved

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 Gladstone water hard?

No. It measures about 23 mg/L (1.3 grains per gallon), which the USGS classes as soft.

What is the water hardness in Gladstone in grains per gallon?

About 1.3 gpg. One grain per gallon equals 17.1 mg/L, so 23 mg/L divided by 17.1 gives 1.3.

Has the Gladstone water system had EPA violations?

EPA records show 8 health-based violations for Gladstone, City of since 2016, involving Haloacetic acids (HAA5), Total trihalomethanes (TTHM). There were also 12 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 53 cities in Oregon

Hardness data: TapWaterData US Water Hardness (utility report, April 21, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.