Tap WaterIndex

← Arizona

Tap water quality report

Rimrock, AZ

EPA monitoring detected 19 contaminants across the 2 water suppliers serving Rimrock. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
3,862
people served
19
contaminants found
Arizona rankings Lead in Arizona PFAS in Arizona

What was found in Rimrock's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
880 µg/L 8.8%
of the EPA limit 10000 µg/L
 2/2 SYR4
Nitrate-Nitrite
850 µg/L 8.5%
of the EPA limit 10000 µg/L
 1/2 SYR4
Barium
500 µg/L 25%
of the EPA limit 2000 µg/L
 2/2 SYR4
Copper
450 µg/L 35%
of the EPA limit 1300 µg/L
 2/2 SYR4
Fluoride
420 µg/L 11%
of the EPA limit 4000 µg/L
 2/2 SYR4
Lithium
216 µg/L
No EPA limit set
 1/2 UCMR-5
Arsenic
31.7 µg/L 317%
of the EPA limit, in the worst sample — 10 µg/L
 2/2 SYR4
TTHM
27.4 µg/L 34%
of the EPA limit 80 µg/L
 2/2 SYR4
Lead
8.8 µg/L 59%
of the EPA limit 15 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
8.4 µg/L 14%
of the EPA limit 60 µg/L
 2/2 SYR4
Trichloroacetic Acid
6.2 µg/L
No EPA limit set
 1/2 SYR4
Chromium
5.7 µg/L 5.7%
of the EPA limit 100 µg/L
 2/2 SYR4
Dichloroacetic Acid
2.2 µg/L
No EPA limit set
 1/2 SYR4
Dibromochloromethane
2 µg/L
No EPA limit set
 1/2 SYR4
Bromodichloromethane
1.6 µg/L
No EPA limit set
 1/2 SYR4
Bromoform
0.9000 µg/L
No EPA limit set
 1/2 SYR4
Chloroform
0.7000 µg/L
No EPA limit set
 1/2 SYR4
Combined Radium (-226 And -228)
0.3000 pCi/L 6%
of the EPA limit 5 pCi/L
 1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 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 single worst sample on record — 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 Rimrock

SupplierPopulation served
ARIZONA WATER CO - RIMROCK 3,423
MONTEZUMA RIMROCK WATER COMPANY 439

Frequently asked questions about Rimrock tap water

Is Rimrock tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Rimrock. 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 Rimrock?

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

What contaminants are in Rimrock's water?

The contaminants EPA monitoring detected in Rimrock include Nitrate, Nitrate-Nitrite, Barium, Copper, Fluoride. The full list, with the highest level found 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.