Is Sweetwater, Red Mesa, AZ Tap Water Safe? Quality & Contaminants

What was found in Sweetwater, Red Mesa's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Fluoride	1580 µg/L 40% of the EPA limit 4000 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2018	1/1	SYR4
Nitrite	370 µg/L 37% of the EPA limit 1000 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2019	1/1	SYR4
Nitrate	350 µg/L 3.5% of the EPA limit 10000 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2019	1/1	SYR4
TTHM	96.775 µg/L 121% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2019	1/1	SYR4
Combined Uranium	31.97 µg/L 107% of the EPA limit, at the 95th percentile of samples — 30 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2018	1/1	SYR4
Total Haloacetic Acids (HAA5)	26.515 µg/L 44% of the EPA limit 60 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2019	1/1	SYR4
Arsenic	24.5 µg/L 245% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2019	1/1	SYR4
Barium	18 µg/L 0.9% of the EPA limit 2000 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2018	1/1	SYR4
Chromium	8.57 µg/L 8.6% of the EPA limit 100 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2018	1/1	SYR4
Gross Alpha, Excl. Radon And U	5.56 pCi/L 37% of the EPA limit 15 pCi/L Main supplier: Sweetwater NTUA · 2,014 people · 2018	1/1	SYR4
Combined Radium (-226 And -228)	0.7800 pCi/L 16% of the EPA limit 5 pCi/L Main supplier: Sweetwater NTUA · 2,014 people · 2018	1/1	SYR4
Mercury	0.4000 µg/L 20% of the EPA limit 2 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2018	1/1	SYR4
Total Polychlorinated Biphenyls (PCB)	0.1000 µg/L 20% of the EPA limit 0.5000 µg/L Main supplier: Sweetwater NTUA · 2,014 people · 2018	1/1	SYR4
Lead	0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: Sweetwater NTUA · 2,014 people · 2025	1/1	LCR

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Sweetwater, Red Mesa

Supplier	Population served
Sweetwater NTUA	2,014

Frequently asked questions about Sweetwater, Red Mesa tap water

Is Sweetwater, Red Mesa tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Sweetwater, Red Mesa. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Sweetwater, Red Mesa?

1 public water supplier report drinking-water monitoring for Sweetwater, Red Mesa, Arizona to the EPA. Each is listed above with its population served.

What contaminants are in Sweetwater, Red Mesa's water?

The contaminants EPA monitoring detected in Sweetwater, Red Mesa include Fluoride, Nitrite, Nitrate, TTHM, Combined Uranium. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.