River Mountains Water Treatment Plant 2024 Water Quality Summary
The Water Authority provides full water analyses for the water at its two treatment facilities before it is delivered to your provider.
| Substance | Average value | MCL | Units |
|---|---|---|---|
| ALKALINITY, as HCO3 | 138 | N/A | ppm |
| ALPHA EMITTERS | 2.7 | 15 | pCi/L |
| ALUMINUM | <5 | 200 | ppb(1) |
| ANTIMONY | <0.4 | 6 | ppb |
| ARSENIC | 2 | 10 | ppb |
| BARIUM | 0.2 | 2 | ppm |
| BERYLLIUM | <0.4 | 4 | ppb |
| BROMATE | 4.4 | 10 | ppb |
| BROMIDE | <20 | N/A | ppb |
| CADMIUM | <0.5 | 5 | ppb |
| CALCIUM | 80 | N/A | ppm |
| CHLORIDE | 113 | 400 | ppm(1) |
| CHLORINE RESIDUAL | 0.95 | 4(2) | ppm |
| CHROMIUM, TOTAL | <3 | 100 | ppb |
| COLIFORM, TOTAL | 0 | ≤1 | number samples positive per month |
| COLOR, TRUE | 1 | 15 | PCU(1) |
| CONDUCTIVITY | 1070 | N/A | µS/cm |
| COPPER | <0.005 | 1 | ppm(1) |
| CYANIDE | <25 | 200 | ppb |
| FLUORIDE (3) | 0.72 | 4 2 |
ppm ppm(1) |
| HALOACETIC ACIDS (Total regulated) | 9.1 | 60 | ppb |
| HARDNESS | 304 18 |
N/A | ppm gpg |
| IRON | <50 | 600 | ppb(1) |
| LEAD | <0.3 | N/A | ppb |
| MAGNESIUM | 25.5 | 150 | ppm(1) |
| MANGANESE | <5 | 100 | ppb(1) |
| MBAS | 0.069 | 500 | ppb(1) |
| MERCURY | <0.2 | 2 | ppb |
| MOLYBDENUM | <5 | N/A | ppb |
| NICKEL | <5 | N/A | ppb |
| NITRATE (as NITROGEN) | 0.58 | 10 | ppm |
| NITRITE (as NITROGEN) | <0.02 | 1 | ppm |
| ODOR | 1 | 3 | TON(1) |
| ORTHO PHOSPHATE (as PO4) | 103 | N/A | ppb |
| PERCHLORATE | 1.2 | N/A | ppb |
| pH | 7.9 | 6.5- 8.5 | pH units(1) |
| POTASSIUM | 5.6 | N/A | ppm |
| RADIUM 226 AND RADIUM 228 (Combined) | <0.4 | 5 | pCi/L |
| SATURATION INDEX | 0.39 | N/A | N/A |
| SELENIUM | 2.3 | 50 | ppb |
| SILICA | 7.6 | N/A | ppm |
| SILVER | <5 | 100 | ppb(1) |
| SODIUM | 103 | N/A | ppm(4) |
| SULFATE | 235 | 500 | ppm(1) |
| TEMPERATURE | 15 | N/A | deg C |
| THALLIUM | <0.2 | 2 | ppb |
| TOTAL DISSOLVED SOLIDS | 656 | 1000 | ppm(1) |
| TOTAL ORGANIC CARBON | 2.5 | N/A | ppm |
| TRIHALOMETHANES (Total) | 16 | 80 | ppb |
| TURBIDITY (Maximum value) | 0.07 | 0.3 | NTU(5) |
| URANIUM | 4.2 | 30 | ppb |
| VANADIUM | <5 | N/A | ppb |
| ZINC | 0.08 | 5 | ppm(1) |
| Substance | Average value | MCL | Units |
|---|---|---|---|
| 1,2,4-TRICHLOROBENZENE | <0.5 | 70 | ppb |
| 1,1,1-TRICHLOROETHANE | <0.5 | 200 | ppb |
| 1,1,2-TRICHLOROETHANE | <0.5 | 5 | ppb |
| 1,1-DICHLOROETHYLENE | <0.5 | 7 | ppb |
| 1,2 DICHLOROPROPANE | <0.5 | 5 | ppb |
| 1,2 -DICHLOROBENZENE | <0.5 | 600 | ppb |
| 1,2-DICHLOROETHANE | <0.5 | 5 | ppb |
| 1,4 -DICHLOROBENZENE | <0.5 | 75 | ppb |
| 2,3,7,8-TCDD (DIOXIN) | <0.005 | 0.03 | ppt |
| 2,4-D | <0.1 | 70 | ppb |
| ALACHLOR | <0.1 | 2 | ppb |
| ATRAZINE | <0.1 | 3 | ppb |
| BENZENE | <0.5 | 5 | ppb |
| CARBOFURAN | <0.5 | 40 | ppb |
| CARBON TETRACHLORIDE | <0.5 | 5 | ppb |
| CHLORDANE | <0.1 | 2 | ppb |
| CHLOROBENZENE | <0.5 | 100 | ppb |
| cis-1,2-DICHLOROETHYLENE | <0.5 | 70 | ppb |
| DALAPON | <1 | 200 | ppb |
| DI (2-ETHYLHEXYL) ADIPATE | <0.6 | 400 | ppb |
| DI (2-ETHYLHEXYL) PHTHALATE | <0.6 | 6 | ppb |
| DIBROMOCHLOROPROPANE | <0.01 | 0.2 | ppb |
| DICHLOROMETHANE | <0.5 | 5 | ppb |
| DINOSEB | <0.2 | 7 | ppb |
| DIQUAT | <0.4 | 20 | ppb |
| ENDOTHALL | <5 | 100 | ppb |
| ENDRIN | <0.01 | 2 | ppb |
| ETHYLBENZENE | <0.5 | 700 | ppb |
| ETHYLENE DIBROMIDE | <0.01 | 0.05 | ppb |
| GLYPHOSATE | <6 | 700 | ppb |
| HEPTACHLOR EPOXIDE | <0.01 | 0.2 | ppb |
| HEPTACHLOR (H-34, HEPTOX) | <0.01 | 0.4 | ppb |
| HEXACHLOROBENZENE | <0.1 | 1 | ppb |
| HEXACHLOROCYCLOPENTADIENE | <0.1 | 50 | ppb |
| LINDANE | <0.02 | 0.2 | ppb |
| METHOXYCHLOR | <0.1 | 40 | ppb |
| MTBE | <0.5 | N/A | ppb |
| OXAMYL (VYDATE) | <0.5 | 200 | ppb |
| PAHs (benzo(a)pyrene) | <0.02 | 0.2 | ppb |
| PENTACHLOROPHENOL | <0.04 | 1 | ppb |
| PICLORAM | <0.1 | 500 | ppb |
| POLYCHLORINATED BIPHENYLS | <0.1 | 0.5 | ppb |
| SILVEX (2,4,5 - TP) | <0.2 | 50 | ppb |
| SIMAZINE | <0.07 | 4 | ppb |
| STYRENE | <0.5 | 100 | ppb |
| TETRACHLOROETHYLENE | <0.5 | 5 | ppb |
| TOLUENE | <0.5 | 1000 | ppb |
| TOXAPHENE | <0.5 | 3 | ppb |
| trans-1,2 DICHLOROETHYLENE | <0.5 | 100 | ppb |
| TRICHLOROETHYLENE | <0.5 | 5 | ppb |
| VINYL CHLORIDE | <0.5 | 2 | ppb |
| XYLENES | <0.5 | 10,000 | ppb |
- (1) State of Nevada secondary standard
- (2) MRDL
- (3) Fluoridation started March 2000
- (4) Monitoring requirement only, no MCL
- (5) Treatment technique requirement
MCL - maximum contaminant level set by EPA
MFL - million fibers per liter, with fiber length > 10 microns
N/A - not applicable, no standard set
NTU - nephelometric turbidity unit
pCi/L - picocuries per liter
ppb - parts per billion
ppm - parts per million
ppt - parts per trillion
µS/cm - micro siemens per centimeter
PCU - platinum cobalt units
gpg - grains per gallon
TON - threshold odor number
MRDL - maximum residual disinfectant level
" < " - less than