PPM reading of my tap water

ismann said:

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.

Click to expand...

Kushash said:

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

Substance	Average Value	MCL	Units
ALKALINITY	140	N/A	ppm
ALPHA EMITTERS	<3	15	pCi/L
ALUMINUM	<5	200	ppb (1)
ANTIMONY	<0.4	6	ppb
ARSENIC	2	10	ppb
BARIUM	0.1	2	ppm
BERYLLIUM	<0.4	4	ppb
BROMATE	5	10	ppb
BROMIDE	<0.20	N/A	ppm
CADMIUM	<0.5	5	ppb
CALCIUM	73	N/A	ppm
CHLORIDE	88	400	ppm (1)
CHLORINE RESIDUAL	0.9	4.0 (2)	ppm
CHROMIUM, TOTAL	<3	100	ppb
COLIFORM, TOTAL	0.1%	5%	percent positive per month
COLOR, TRUE	<1	15	PCU (1)
CONDUCTIVITY	941	N/A	µS/cm
COPPER	0.004	1.0	ppm (1)
CYANIDE, FREE	<25	200	ppb
FLUORIDE (3)	0.7	4.0 2.0	ppm ppm (1)
HALOACETIC ACIDS (Total Regulated)	36	60	ppb
HARDNESS, TOTAL	280 16.4	N/A	ppm gpg
IRON	<50	600	ppb (1)
LEAD	<0.3	N/A	ppb
MAGNESIUM	23	150	ppm (1)
MANGANESE	<5	100	ppb (1)
MBAS	<0.1	0.5	ppm (1)
MERCURY	<0.2	2	ppb
MOLYBDENUM	<5	N/A	ppb
NICKEL	<5	N/A	ppb
NITRATE (as NITROGEN)	0.4	10	ppm
NITRITE (as NITROGEN)	<0.02	1	ppm
ODOR	<1	3	TON (1)
ORTHO PHOSPHATE	27	N/A	ppb
PERCHLORATE	0.6	N/A	ppb
pH	7.9	6.5 - 8.5	pH units (1)
POTASSIUM	4.4	N/A	ppm
RADIUM 226 AND RADIUM 228 (Combined)	<1	5	pCi/L
SATURATION INDEX	0.4	N/A	N/A
SELENIUM	2	50	ppb
SILICA	8.5	N/A	ppm
SILVER	<5	100	ppb (1)
SODIUM	83	N/A	ppm (4)
SULFATE	209	500	ppm (1)
TEMPERATURE	17.5	N/A	deg C
THALLIUM	<0.2	2	ppb
TOTAL DISSOLVED SOLIDS	569	1000	ppm (1)
TRIHALOMETHANES (Total)	67	80	ppb
TURBIDITY	0.08	N/A	NTU (4)
URANIUM	4	30	ppb
VANADIUM	<5	N/A	ppb
ZINC	0.1	5.0	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	<0.05	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	<8	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	<0.05	1	ppb
HEXACHLOROCYCLOPENTADIENE	<0.05	50	ppb
LINDANE	<0.01	0.2	ppb
METHOXYCHLOR	<0.05	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	<0.05	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

Click to expand...

Aqua Man said:

Yeah I would definitely cut that with RO at least 50/50 maybe even more 75/25

Click to expand...