Water hardness in Omaha
9 gpg hard
Tap water in Omaha is hard: 9 gpg (154 mg/L · 8.6 °dH · 15.4 °fH).
Source: Metropolitan Utilities District of Omaha, 2025 Water Quality Report (CCR) (2025) · data checked 2026-10-23
Range across supply zones: 137–223 mg/L.
Metropolitan Utilities District uses the Missouri River, the Platte River and the Dakota sandstone aquifer, treated at three plants (Florence, Platte West and Platte South). Hardness is 154.1 mg/L CaCO₃, with 137–222.6 mg/L reported across the system. That is hard water, so expect scale in water heaters and on glass.
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Water data
| Total hardness | 9 gpg |
|---|---|
| Calcium (mg/L) | 45 |
| Magnesium (mg/L) | 11 |
| Utility | Metropolitan Utilities District (M.U.D.) of Omaha |
How Omaha compares
- Tap water in Omaha is close to the median of the 1372 cities we track in the United States (9.1 gpg).
- By hardness it ranks 691 of 1372 in the United States (1 = hardest); 50 % of these cities have softer water.
- In Nebraska it is number 4 of 4 cities; the regional median is 10.3 gpg.
Ranking of the hardest and softest water in the United States →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Omaha
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 9 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S1 |
| LG | H2 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Omaha water hard or soft?
It is hard: 154 mg/L as CaCO₃ (9 gpg, 8.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Omaha safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
How many grains per gallon is Omaha water?
9 gpg, equal to 8.6 °dH, 15.4 °fH or 154 mg/L calcium carbonate.
What dishwasher salt setting should I use in Omaha?
For 154 mg/L (8.6 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Omaha?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: Metropolitan Utilities District of Omaha, 2025 Water Quality Report (CCR) (2025). Method: figure published by the water supplier. Metropolitan Utilities District of Omaha, 2025 Water Quality Report (CCR) · Outdated figure? Tell us