Hard water in Medford, OR
County estimate from 792 water samples in Jackson County · July 2026
- OR typical
- 24 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- County estimate
Water samples from around Medford put hardness at about 145 mg/L (8.5 gpg), which would be hard on the USGS scale. Treat this as a rough guide: it is the median of 792 samples taken across Jackson County, mostly wells and streams, not a test of Medford's treated tap water. One more reason for caution: EPA lists Medford's water system as using surface water, which is often softer than the wells behind the county figure.
At 145 mg/L, Medford is 121 mg/L above the typical Oregon figure of 24. None of the 10 nearest cities we track has harder water. The range nearby runs from 18 mg/L in Springfield to 66 in Roseburg.
What 145 mg/L means at home
Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.
Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.
Soap and detergent need a little more to lather, and soap scum shows up in the tub.
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
At 145 mg/L most of the trouble is scale, and only a few things deal with it.
Ion-exchange water softener
The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.
Salt-free conditioner
No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.
Reverse osmosis or carbon filter
Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.
3 people × 75 gallons a day × 8.5 gpg = 1,908 grains a day. A 24,000-grain unit regenerates about every 12 days.
EPA record for Medford's water system
No health-based violations since 2016
Serves about 106,068 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 8
- Open now
- 0
EPA lists this system as serving Medford.
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 Medford water hard?
Yes. It measures about 145 mg/L (8.5 grains per gallon), which the USGS classes as hard.
What is the water hardness in Medford in grains per gallon?
About 8.5 gpg. One grain per gallon equals 17.1 mg/L, so 145 mg/L divided by 17.1 gives 8.5.
What size water softener do I need in Medford?
For 3 people using 75 gallons each per day, 8.5 gpg works out to about 1,908 grains a day. A 24,000-grain softener covers that with a regeneration about every 12 days.
Has the Medford water system had EPA violations?
EPA records show no health-based violations for Medford Water Commission since 2016. There were also 8 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Ashland31 mg/LSoft
- Roseburg66 mg/LModerately hard
- Springfield18 mg/LSoft
- Eugene19 mg/LSoft
- River Road19 mg/LSoft
- Santa Clara19 mg/LSoft
- Deschutes River Woods32 mg/LSoft
- Bend32 mg/LSoft
- Lebanon25 mg/LSoft
- Corvallis27 mg/LSoft
Hardness data: TapWaterData US Water Hardness (county estimate, July 4, 2026), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.