What was found in Yuma's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 9800 µg/L 98% of the EPA limit 10000 µg/L | 17/20 | SYR4 |
| Nitrate-Nitrite | 8770 µg/L 88% of the EPA limit 10000 µg/L | 10/20 | SYR4 |
| Copper | 6270 µg/L 482% of the EPA limit, in the worst sample — 1300 µg/L | 18/20 | SYR4 |
| Fluoride | 3100 µg/L 78% of the EPA limit 4000 µg/L | 18/20 | SYR4 |
| Nitrite | 2340 µg/L 234% of the EPA limit, in the worst sample — 1000 µg/L | 1/20 | SYR4 |
| Barium | 760 µg/L 38% of the EPA limit 2000 µg/L | 19/20 | SYR4 |
| Chlorite | 580 µg/L 58% of the EPA limit 1000 µg/L | 2/20 | SYR4 |
| Lithium | 210 µg/L No EPA limit set | 6/20 | UCMR-5 |
| Lead | 129 µg/L 860% of the EPA limit, in the worst sample — 15 µg/L | 18/20 | SYR4 |
| TTHM | 120 µg/L 150% of the EPA limit, in the worst sample — 80 µg/L | 6/20 | SYR4 |
| Arsenic | 74 µg/L 740% of the EPA limit, in the worst sample — 10 µg/L | 16/20 | SYR4 |
| Combined Uranium | 65.262 µg/L 218% of the EPA limit, in the worst sample — 30 µg/L | 8/20 | SYR4 |
| Total Haloacetic Acids (HAA5) | 44 µg/L 73% of the EPA limit 60 µg/L | 6/20 | SYR4 |
| Selenium | 12 µg/L 24% of the EPA limit 50 µg/L | 7/20 | SYR4 |
| Gross Alpha, Excl. Radon And U | 8.9 pCi/L 59% of the EPA limit 15 pCi/L | 7/20 | SYR4 |
| Xylenes, Total | 5.8 µg/L 0.1% of the EPA limit 10000 µg/L | 1/20 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 4.5 µg/L 75% of the EPA limit 6 µg/L | 2/20 | SYR4 |
| Chromium | 4 µg/L 4% of the EPA limit 100 µg/L | 7/20 | SYR4 |
| Combined Radium (-226 And -228) | 1.9 pCi/L 38% of the EPA limit 5 pCi/L | 5/20 | SYR4 |
| Thallium, Total | 1.9 µg/L 95% of the EPA limit 2 µg/L | 1/20 | SYR4 |
| Ethylbenzene | 1 µg/L 0.1% of the EPA limit 700 µg/L | 1/20 | SYR4 |
| Toluene | 0.7500 µg/L 0.1% of the EPA limit 1000 µg/L | 1/20 | SYR4 |
| Mercury | 0.2100 µg/L 11% of the EPA limit 2 µg/L | 1/20 | SYR4 |
| Antimony, Total | 0.1100 µg/L 1.8% of the EPA limit 6 µg/L | 1/20 | SYR4 |
| Lead | 0.0126 mg/L 84% of the EPA limit 0.0150 mg/L | 19/20 | LCR |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.0090 µg/L 4.5% of the EPA limit 0.2000 µg/L | 1/20 | SYR4 |
| PFHXS | 0.0031 µg/L No EPA limit set | 1/20 | UCMR-5 |
Water suppliers serving Yuma
| Supplier | Population served |
|---|---|
| CITY OF YUMA | 103,264 |
| FOOTHILLS WATER AND SEWER LLC | 32,425 |
| USMC YUMA MAIN SYSTEM | 8,353 |
| Quechan Utility | 5,660 |
| ASPC YUMA | 4,197 |
| HOWARD CANTONMENT AREA | 1,500 |
| SIERRA PACIFIC MOBILE MANOR | 816 |
| CS TIERRA MESA ESTATES WATER COMPANY | 632 |
| LAGUNA MOBILE HOME AND RV PARK | 450 |
| CS EL PRADO WATER COMPANY | 404 |
| FISHERS LANDING RESORT | 402 |
| LOST TRAVELER RV PARK | 200 |
| SUN LEISURE ESTATES IMPROVEMENT DISTRICT | 143 |
| CS RANCHEROS BONITOS WATER COMPANY | 120 |
| CS GREEN ACRES WATER COMPANY | 105 |
| G & L MOBILE PARK | 90 |
| MOUNTAIN VIEW MOBILE VILLAGE | 75 |
| RIVER RV RANCH | 71 |
| JONES COOP WATER ASSOC | 35 |
| YUMA WEST MHP | 30 |
Frequently asked questions about Yuma tap water
Is Yuma tap water safe to drink?
EPA testing detected 27 contaminants in the water serving Yuma. 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 Yuma?
20 public water suppliers report drinking-water monitoring for Yuma, Arizona to the EPA. Each is listed above with its population served.
What contaminants are in Yuma's water?
The contaminants EPA monitoring detected in Yuma include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Nitrite. 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.