Is Concho, AZ Tap Water Safe? Quality & Contaminants

What was found in Concho'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	410 µg/L 4.1% of the EPA limit 10000 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2019	1/2	SYR4
Nitrate-Nitrite	360 µg/L 3.6% of the EPA limit 10000 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2012	1/2	SYR4
Fluoride	354.35 µg/L 8.9% of the EPA limit 4000 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2015	1/2	SYR4
Copper	66.25 µg/L 5.1% of the EPA limit 1300 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2019 Highest in the city: 125 µg/L — OLD CONCHO WATER USERS · 40 people · 2019	2/2	SYR4
Barium	58.5 µg/L 2.9% of the EPA limit 2000 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2015	1/2	SYR4
Lithium	13 µg/L No EPA limit set Highest in the city: OLD CONCHO WATER USERS · 40 people · 2025	1/2	UCMR-5
Lead	7.83 µg/L 52% of the EPA limit 15 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2019 Highest in the city: 10.47 µg/L — OLD CONCHO WATER USERS · 40 people · 2019	2/2	SYR4
Arsenic	5.3 µg/L 53% of the EPA limit 10 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2015	1/2	SYR4
Combined Radium (-226 And -228)	2.755 pCi/L 55% of the EPA limit 5 pCi/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2018	1/2	SYR4
Antimony, Total	1.8 µg/L 30% of the EPA limit 6 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2015	1/2	SYR4
Chromium	1.2 µg/L 1.2% of the EPA limit 100 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2015	1/2	SYR4
TTHM	0.5900 µg/L 0.7% of the EPA limit 80 µg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2019	1/2	SYR4
Lead	0.0060 mg/L 40% of the EPA limit 0.0150 mg/L Main supplier: LIVCO WATER COMPANY · 1,120 people · 2025	2/2	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 Concho

Supplier	Population served
LIVCO WATER COMPANY	1,120
OLD CONCHO WATER USERS	40

Frequently asked questions about Concho tap water

Is Concho tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Concho. 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 Concho?

2 public water suppliers report drinking-water monitoring for Concho, Arizona to the EPA. Each is listed above with its population served.

What contaminants are in Concho's water?

The contaminants EPA monitoring detected in Concho include Nitrate, Nitrate-Nitrite, Fluoride, Copper, 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.