PPM reading of my tap water

Aqua Man

Well-Known Member
My tap is 7.8 and after running it through a Brita it's around 6. I mix in my nutes and it only goes down slightly. I can mix in some tap to bring it up where I need it. RO can be tricky to pH because you'd think pure water is 7 but RO and distilled especially like to absorb CO2 from the air, creating a weak carbonic acid which lowers the pH. I've let RO sit out for awhile and it got to around 5 pH.
Ph testing RO is not reliable. And I agree it need to be buffered if the nutrients do not provide this
 

Kushash

Well-Known Member
Looking at my water report the calcium is 73 ppms and magnesium is 23 ppms and I usually cut it with 1 part tap / 2 parts RO.
The list of shit in my water includes most if not all of the well known micro nutrients used for growing.

Total dissolved reads 569 ppms.

It changes from that to sometimes being in the low 400's depending on the time of year.
I'm guessing sometimes they take water from the aquifer lowering the ppms.


Las Vegas Valley Water District



Las Vegas Valley Water District 2019 Water Quality Summary

SubstanceAverage ValueMCLUnits
ALKALINITY140N/Appm
ALPHA EMITTERS<315pCi/L
ALUMINUM<5200ppb (1)
ANTIMONY<0.46ppb
ARSENIC210ppb
BARIUM0.12ppm
BERYLLIUM<0.44ppb
BROMATE510ppb
BROMIDE<0.20N/Appm
CADMIUM<0.55ppb
CALCIUM73N/Appm
CHLORIDE88400ppm (1)
CHLORINE RESIDUAL0.94.0 (2)ppm
CHROMIUM, TOTAL<3100ppb
COLIFORM, TOTAL0.1%5%percent positive per month
COLOR, TRUE<115PCU (1)
CONDUCTIVITY941N/AµS/cm
COPPER0.0041.0ppm (1)
CYANIDE, FREE<25200ppb
FLUORIDE (3)0.7
4.0
2.0
ppm
ppm (1)
HALOACETIC ACIDS (Total Regulated)3660ppb
HARDNESS, TOTAL280
16.4
N/A
ppm
gpg
IRON<50600ppb (1)
LEAD<0.3N/Appb
MAGNESIUM23150ppm (1)
MANGANESE<5100ppb (1)
MBAS<0.10.5ppm (1)
MERCURY<0.22ppb
MOLYBDENUM<5N/Appb
NICKEL<5N/Appb
NITRATE (as NITROGEN)0.410ppm
NITRITE (as NITROGEN)<0.021ppm
ODOR<13TON (1)
ORTHO PHOSPHATE27N/Appb
PERCHLORATE0.6N/Appb
pH7.96.5 - 8.5pH units (1)
POTASSIUM4.4N/Appm
RADIUM 226 AND RADIUM 228 (Combined)<15pCi/L
SATURATION INDEX0.4N/AN/A
SELENIUM250ppb
SILICA8.5N/Appm
SILVER<5100ppb (1)
SODIUM83N/Appm (4)
SULFATE209500ppm (1)
TEMPERATURE17.5N/Adeg C
THALLIUM<0.22ppb
TOTAL DISSOLVED SOLIDS5691000ppm (1)
TRIHALOMETHANES (Total)6780ppb
TURBIDITY0.08N/ANTU (4)
URANIUM430ppb
VANADIUM<5N/Appb
ZINC0.15.0ppm (1)

SubstanceAverage ValueMCLUnits
1,2,4-TRICHLOROBENZENE<0.570ppb
1,1,1-TRICHLOROETHANE<0.5200ppb
1,1,2-TRICHLOROETHANE<0.55ppb
1,1-DICHLOROETHYLENE<0.57ppb
1,2 DICHLOROPROPANE<0.55ppb
1,2 -DICHLOROBENZENE<0.5600ppb
1,2-DICHLOROETHANE<0.55ppb
1,4 -DICHLOROBENZENE<0.575ppb
2,3,7,8-TCDD (DIOXIN)<0.0050.03ppt
2,4-D<0.170ppb
ALACHLOR<0.12ppb
ATRAZINE<0.053ppb
BENZENE<0.55ppb
CARBOFURAN<0.540ppb
CARBON TETRACHLORIDE<0.55ppb
CHLORDANE<0.12ppb
CHLOROBENZENE<0.5100ppb
cis-1,2-DICHLOROETHYLENE<0.570ppb
DALAPON<1200ppb
DI (2-ETHYLHEXYL) ADIPATE<0.6400ppb
DI (2-ETHYLHEXYL) PHTHALATE<0.66ppb
DIBROMOCHLOROPROPANE<0.010.2ppb
DICHLOROMETHANE<0.55ppb
DINOSEB<0.27ppb
DIQUAT<0.420ppb
ENDOTHALL<8100ppb
ENDRIN<0.012ppb
ETHYLBENZENE<0.5700ppb
ETHYLENE DIBROMIDE<0.010.05ppb
GLYPHOSATE<6700ppb
HEPTACHLOR EPOXIDE<0.010.2ppb
HEPTACHLOR (H-34, HEPTOX)<0.010.4ppb
HEXACHLOROBENZENE<0.051ppb
HEXACHLOROCYCLOPENTADIENE<0.0550ppb
LINDANE<0.010.2ppb
METHOXYCHLOR<0.0540ppb
MTBE<0.5N/Appb
OXAMYL (VYDATE)<0.5200ppb
PAHs (benzo(a)pyrene)<0.020.2ppb
PENTACHLOROPHENOL<0.041ppb
PICLORAM<0.1500ppb
POLYCHLORINATED BIPHENYLS<0.10.5ppb
SILVEX (2,4,5 - TP)<0.250ppb
SIMAZINE<0.054ppb
STYRENE<0.5100ppb
TETRACHLOROETHYLENE<0.55ppb
TOLUENE<0.51000ppb
TOXAPHENE<0.53ppb
trans-1,2 DICHLOROETHYLENE<0.5100ppb
TRICHLOROETHYLENE<0.55ppb
VINYL CHLORIDE<0.52ppb
XYLENES<0.510,000ppb
 

Aqua Man

Well-Known Member
Looking at my water report the calcium is 73 ppms and magnesium is 23 ppms and I usually cut it with 1 part tap / 2 parts RO.
The list of shit in my water includes most if not all of the well known micro nutrients used for growing.

Total dissolved reads 569 ppms.

It changes from that to sometimes being in the low 400's depending on the time of year.
I'm guessing sometimes they take water from the aquifer lowering the ppms.


Las Vegas Valley Water District



Las Vegas Valley Water District 2019 Water Quality Summary

SubstanceAverage ValueMCLUnits
ALKALINITY140N/Appm
ALPHA EMITTERS<315pCi/L
ALUMINUM<5200ppb (1)
ANTIMONY<0.46ppb
ARSENIC210ppb
BARIUM0.12ppm
BERYLLIUM<0.44ppb
BROMATE510ppb
BROMIDE<0.20N/Appm
CADMIUM<0.55ppb
CALCIUM73N/Appm
CHLORIDE88400ppm (1)
CHLORINE RESIDUAL0.94.0 (2)ppm
CHROMIUM, TOTAL<3100ppb
COLIFORM, TOTAL0.1%5%percent positive per month
COLOR, TRUE<115PCU (1)
CONDUCTIVITY941N/AµS/cm
COPPER0.0041.0ppm (1)
CYANIDE, FREE<25200ppb
FLUORIDE (3)0.74.0
2.0
ppm
ppm (1)
HALOACETIC ACIDS (Total Regulated)3660ppb
HARDNESS, TOTAL280
16.4
N/Appm
gpg
IRON<50600ppb (1)
LEAD<0.3N/Appb
MAGNESIUM23150ppm (1)
MANGANESE<5100ppb (1)
MBAS<0.10.5ppm (1)
MERCURY<0.22ppb
MOLYBDENUM<5N/Appb
NICKEL<5N/Appb
NITRATE (as NITROGEN)0.410ppm
NITRITE (as NITROGEN)<0.021ppm
ODOR<13TON (1)
ORTHO PHOSPHATE27N/Appb
PERCHLORATE0.6N/Appb
pH7.96.5 - 8.5pH units (1)
POTASSIUM4.4N/Appm
RADIUM 226 AND RADIUM 228 (Combined)<15pCi/L
SATURATION INDEX0.4N/AN/A
SELENIUM250ppb
SILICA8.5N/Appm
SILVER<5100ppb (1)
SODIUM83N/Appm (4)
SULFATE209500ppm (1)
TEMPERATURE17.5N/Adeg C
THALLIUM<0.22ppb
TOTAL DISSOLVED SOLIDS5691000ppm (1)
TRIHALOMETHANES (Total)6780ppb
TURBIDITY0.08N/ANTU (4)
URANIUM430ppb
VANADIUM<5N/Appb
ZINC0.15.0ppm (1)
SubstanceAverage ValueMCLUnits
1,2,4-TRICHLOROBENZENE<0.570ppb
1,1,1-TRICHLOROETHANE<0.5200ppb
1,1,2-TRICHLOROETHANE<0.55ppb
1,1-DICHLOROETHYLENE<0.57ppb
1,2 DICHLOROPROPANE<0.55ppb
1,2 -DICHLOROBENZENE<0.5600ppb
1,2-DICHLOROETHANE<0.55ppb
1,4 -DICHLOROBENZENE<0.575ppb
2,3,7,8-TCDD (DIOXIN)<0.0050.03ppt
2,4-D<0.170ppb
ALACHLOR<0.12ppb
ATRAZINE<0.053ppb
BENZENE<0.55ppb
CARBOFURAN<0.540ppb
CARBON TETRACHLORIDE<0.55ppb
CHLORDANE<0.12ppb
CHLOROBENZENE<0.5100ppb
cis-1,2-DICHLOROETHYLENE<0.570ppb
DALAPON<1200ppb
DI (2-ETHYLHEXYL) ADIPATE<0.6400ppb
DI (2-ETHYLHEXYL) PHTHALATE<0.66ppb
DIBROMOCHLOROPROPANE<0.010.2ppb
DICHLOROMETHANE<0.55ppb
DINOSEB<0.27ppb
DIQUAT<0.420ppb
ENDOTHALL<8100ppb
ENDRIN<0.012ppb
ETHYLBENZENE<0.5700ppb
ETHYLENE DIBROMIDE<0.010.05ppb
GLYPHOSATE<6700ppb
HEPTACHLOR EPOXIDE<0.010.2ppb
HEPTACHLOR (H-34, HEPTOX)<0.010.4ppb
HEXACHLOROBENZENE<0.051ppb
HEXACHLOROCYCLOPENTADIENE<0.0550ppb
LINDANE<0.010.2ppb
METHOXYCHLOR<0.0540ppb
MTBE<0.5N/Appb
OXAMYL (VYDATE)<0.5200ppb
PAHs (benzo(a)pyrene)<0.020.2ppb
PENTACHLOROPHENOL<0.041ppb
PICLORAM<0.1500ppb
POLYCHLORINATED BIPHENYLS<0.10.5ppb
SILVEX (2,4,5 - TP)<0.250ppb
SIMAZINE<0.054ppb
STYRENE<0.5100ppb
TETRACHLOROETHYLENE<0.55ppb
TOLUENE<0.51000ppb
TOXAPHENE<0.53ppb
trans-1,2 DICHLOROETHYLENE<0.5100ppb
TRICHLOROETHYLENE<0.55ppb
VINYL CHLORIDE<0.52ppb
XYLENES<0.510,000ppb
Yeah I would definitely cut that with RO at least 50/50 maybe even more 75/25
 
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