Drinking water quality

What's in Omaha, NE tap water

45 contaminants were measured in the Omaha, NE water system's most recent annual report. Each is shown below against its federal limit — 1 sit at or above that limit.

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Disinfection byproducts

Contaminant	Measured	Federal limit	Status
Bromodichloroacetic acid	2.85Max Single	None set	Detected — no federal limit
Bromodichloromethane	9.49–17.5Range	None set	Detected — no federal limit
Bromoform	0–1.93Range	None set	Detected — no federal limit
Chloroform	15.8–51Range	None set	Detected — no federal limit
Dibromochloromethane	2.65–10.5Range	None set	Detected — no federal limit
HAA5	10.7–33.1 ug/LRange	60 ug/LMCL	Approaching the limit
TTHM	35.2–92.6 ug/LRange	80 ug/LMCL	At or above the limit

Inorganic chemicals

Contaminant	Measured	Federal limit	Status
Bromide	65.6Max Single	None set	Detected — no federal limit
Bromochloroacetic acid	3.41–8.31Range	None set	Detected — no federal limit
Chloride	17–66Range	None set	Detected — no federal limit
Chlorodibromoacetic acid	1.52Max Single	None set	Detected — no federal limit
Dibromoacetic acid	0.73–2.6Range	None set	Detected — no federal limit
Dichloroacetic acid	6.38–28.1Range	None set	Detected — no federal limit
Fluoride	0.83 mg/LReported Level	4 mg/LMCLG	Within the limit
Monobromoacetic acid	Not detectedMax Single	None set	None detected
Nitrate	2.9 mg/LReported Level	10 mg/LMCLG	Within the limit
Sulfate	55–270Range	None set	Detected — no federal limit
Trichloroacetic acid	1.68–7.99Range	None set	Detected — no federal limit

Metals

Contaminant	Measured	Federal limit	Status
Aluminum	0–0.36Range	None set	Detected — no federal limit
Arsenic	4.9 ug/LReported Level	0 ug/LMCLG	Detected — no federal limit
Barium	0.118 mg/LReported Level	2 mg/LMCLG	Within the limit
Calcium	35–54Range	None set	Detected — no federal limit
Chromium, Total	1.74 ug/LReported Level	100 ug/LMCLG	Within the limit
Germanium	Not detectedMax Single	None set	None detected
Iron	0–0.14Range	None set	Detected — no federal limit
Lithium	102Reported Level	None set	Detected — no federal limit
Magnesium	8–26Range	None set	Detected — no federal limit
Manganese	0–0.065Range	None set	Detected — no federal limit
Potassium	3–12Range	None set	Detected — no federal limit
Selenium	4.92 ug/LReported Level	50 ug/LMCLG	Within the limit
Silica	3–31Range	None set	Detected — no federal limit
Sodium	83 mg/LReported Level	500 mg/LMCL	Within the limit
Zinc	Not detectedAverage	None set	None detected

Physical & aggregate

Contaminant	Measured	Federal limit	Status
Alkalinity	33–161Range	None set	Detected — no federal limit
Color	1–6Range	None set	Detected — no federal limit
Hardness	8–12Range	None set	Detected — no federal limit
pH	8.81–9.26Range	None set	Detected — no federal limit
Specific Conductance	424–695Range	None set	Detected — no federal limit
Temperature	1.9–26.1Range	None set	Detected — no federal limit
TOC	3840Max Single	None set	Detected — no federal limit
Total Dissolved Solids	346–516Range	None set	Detected — no federal limit
Turbidity	0.4 NTUReported Level	None set	Detected — no federal limit

Radionuclides

Contaminant	Measured	Federal limit	Status
Combined Radium	0.54Average	None set	Detected — no federal limit
Gross Alpha	6.38 pCi/LReported Level	0 pCi/LMCLG	Detected — no federal limit

VOCs & pesticides

Contaminant	Measured	Federal limit	Status
Atrazine	0.326 ug/LReported Level	3 ug/LMCLG	Within the limit

Every figure here is transcribed verbatim from Omaha, NE's annual Consumer Confidence Report, cross-checked by a second model, and approved by a person before publishing. Numbers are the utility's own — a water-quality report covers an entire service area, not a single address.