Hard water in Omaha, NE
Reported by Metropolitan Utilities District · September 2025
- NE typical
- 149 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Utility report
Tap water in Omaha has about 149 mg/L of hardness, which is 8.7 grains per gallon. On the USGS scale that counts as hard. The number comes from Metropolitan Utilities District, dated September 2025.
At 149 mg/L, Omaha is close to the typical Nebraska figure of 149 mg/L. None of the 5 nearest cities we track has softer water. The range nearby runs from 172 mg/L in Bellevue to 315 in Fremont.
What 149 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 149 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 × 8.7 gpg = 1,960 grains a day. A 24,000-grain unit regenerates about every 12 days.
EPA record for Omaha's water system
No health-based violations since 2016
Serves about 660,000 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 1
- Open now
- 0
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 Omaha water hard?
Yes. It measures about 149 mg/L (8.7 grains per gallon), which the USGS classes as hard.
What is the water hardness in Omaha in grains per gallon?
About 8.7 gpg. One grain per gallon equals 17.1 mg/L, so 149 mg/L divided by 17.1 gives 8.7.
What size water softener do I need in Omaha?
For 3 people using 75 gallons each per day, 8.7 gpg works out to about 1,960 grains a day. A 24,000-grain softener covers that with a regeneration about every 12 days.
Has the Omaha water system had EPA violations?
EPA records show no health-based violations for Metropolitan Utilities District since 2016. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.
Nearby cities
- Papillion234 mg/LVery hard
- Bellevue172 mg/LHard
- Fremont315 mg/LVery hard
- Lincoln215 mg/LVery hard
- North Platte211 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (utility report, September 22, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.