Tap Water Quality Report
Tap water quality in Omaha, Nebraska
Tap water in Omaha, Nebraska receives a grade of F (59/100) from TapWaterSafety.org. It's served by METROPOLITAN UTILITIES DISTRICT. The most significant water quality concerns are: Arsenic significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Omaha's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Omaha.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 2.59 ppb, 648x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 33.2 ppb, 553x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 40.2 ppb, 268x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for METROPOLITAN UTILITIES DISTRICT (system ID NE3105507) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Missed testing or reporting | 04/01/2023 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for Omaha
Filters matched to the specific contaminants in Omaha's water supply.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in Omaha's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
2.59 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 648× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
33.2 ppb | 0.06 | — | — | — | — | — | 553× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
40.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 268× over |
| Bromochloroacetic acid Disinfection byproduct |
5.06 ppb | 0.02 | — | — | — | — | — | 253× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
19.3 ppb | 0.1 | 60.0 | 60 | — | — | — | 193× over |
| Bromodichloromethane Disinfection byproduct |
11.0 ppb | 0.06 | — | — | — | — | — | 184× over |
| Dichloroacetic acid Disinfection byproduct |
13.6 ppb | 0.2 | — | — | — | — | — | 68× over |
| Chloroform Disinfection byproduct |
23.5 ppb | 0.4 | — | — | — | — | — | 59× over |
| Dibromoacetic acid Disinfection byproduct |
1.74 ppb | 0.03 | — | — | — | — | — | 58× over |
| Dibromochloromethane Disinfection byproduct |
5.3 ppb | 0.1 | — | — | — | — | — | 53× over |
| Trichloroacetic acid Disinfection byproduct |
3.28 ppb | 0.1 | — | — | — | — | — | 33× over |
| Chromium (hexavalent) Heavy metal |
0.609 ppb | 0.02 | — | — | — | — | — | 30× over |
| Nitrate and nitrite Inorganic |
1.15 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 8.2× over |
| Radium, combined (-226 and -228) Radiological |
0.16 pCi/L | 0.05 | 5.0 | — | — | — | — | 3.2× over |
| Bromoform Disinfection byproduct |
0.299 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Atrazine Pesticide/Herbicide |
0.0409 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Below guideline |
| Vanadium Other |
4.2 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Antimony Heavy metal |
0.121 ppb | 1.0 | 6.0 | 10 | 20 | 1 | — | Below guideline |
| Barium Heavy metal |
75.6 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
3.81 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Selenium Heavy metal |
2.16 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Chlorate Disinfection byproduct |
4.73 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.674 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.88 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.294 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
1.06 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.623 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Quinoline Other |
0.00295 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from METROPOLITAN UTILITIES DISTRICT.
General Contact
Treatment Plant
ZIP codes served
Omaha's public water systems serve the following ZIP codes: