Is Black Canyon City, AZ Tap Water Safe? Quality & Contaminants

What was found in Black Canyon City'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
Nitrate	3700 µg/L 37% of the EPA limit 10000 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2019 Highest in the city: 4900 µg/L — COLDWATER CANYON 2 · 247 people · 2019	4/4	SYR4
Nitrate-Nitrite	4130 µg/L 41% of the EPA limit 10000 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2013 Highest in the city: 4900 µg/L — COLDWATER CANYON 2 · 247 people · 2013	4/4	SYR4
Copper	306 µg/L 24% of the EPA limit 1300 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2018 Highest in the city: 1110 µg/L — COLDWATER CANYON 3 · 120 people · 2018	4/4	SYR4
Fluoride	757.5 µg/L 19% of the EPA limit 4000 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2019	4/4	SYR4
Barium	51 µg/L 2.6% of the EPA limit 2000 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2019	4/4	SYR4
TTHM	38.6 µg/L 48% of the EPA limit 80 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2019	4/4	SYR4
Arsenic	12.75 µg/L 127% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2019 Highest in the city: 18 µg/L — COLDWATER CANYON 1 · 541 people · 2019	4/4	SYR4
Lead	17.75 µg/L 118% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2018	4/4	SYR4
Total Haloacetic Acids (HAA5)	8.54 µg/L 14% of the EPA limit 60 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2019 Highest in the city: 11.1 µg/L — COLDWATER CANYON 2 · 247 people · 2019	4/4	SYR4
Dibromoacetic Acid	9.8 µg/L No EPA limit set Highest in the city: COLDWATER CANYON 2 · 247 people · 2019	3/4	SYR4
Dibromochloromethane	5.2 µg/L No EPA limit set Highest in the city: COLDWATER CANYON 3 · 120 people · 2019	3/4	SYR4
Bromoform	4.435 µg/L No EPA limit set Highest in the city: COLDWATER CANYON 1 · 541 people · 2019	3/4	SYR4
Bromodichloromethane	2.5 µg/L No EPA limit set Highest in the city: COLDWATER CANYON 3 · 120 people · 2019	3/4	SYR4
Cadmium	1.4 µg/L 28% of the EPA limit 5 µg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2019	1/4	SYR4
Monobromoacetic Acid	1.2 µg/L No EPA limit set Highest in the city: COLDWATER CANYON 2 · 247 people · 2019	1/4	SYR4
Chromium	1.1 µg/L 1.1% of the EPA limit 100 µg/L Highest in the city: COLDWATER CANYON 3 · 120 people · 2019	2/4	SYR4
Chloroform	0.8000 µg/L No EPA limit set Highest in the city: COLDWATER CANYON 3 · 120 people · 2019	1/4	SYR4
Lead	0.0120 mg/L 80% of the EPA limit 0.0150 mg/L Main supplier: BLACK CANYON CITY WID · 2,437 people · 2025 Highest in the city: 0.0500 mg/L — COLDWATER CANYON 1 · 541 people · 2025	4/4	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 Black Canyon City

Supplier	Population served
BLACK CANYON CITY WID	2,437
COLDWATER CANYON 1	541
COLDWATER CANYON 2	247
COLDWATER CANYON 3	120

Frequently asked questions about Black Canyon City tap water

Is Black Canyon City tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Black Canyon City. 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 Black Canyon City?

4 public water suppliers report drinking-water monitoring for Black Canyon City, Arizona to the EPA. Each is listed above with its population served.

What contaminants are in Black Canyon City's water?

The contaminants EPA monitoring detected in Black Canyon City include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Barium. 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.