CH RAW, FINISHED & DISTRIBUTED TESTING

CAPE HATTERAS WATER PLANT
RAW, FINISHED & DISTRIBUTED TESTING

July 2008

	Anion Well Water Raw	RO Well Water Raw	Finished Water Quality	Distributed Water Quality	MCL
P - Alkalinity as CaCO₃, mg/l	0	0	0	0	N/A
Total Alkalinity CaCO₃, mg/l	320	280	60	60	N/A
Bicarbonate as HCO₃, mg/l	150	300	74	76	N/A
Carbonate as CO₃, mg/l	0	0	0	0	N/A
Hydroxide as OH, mg/l	0	0	0	0	N/A
Total Hardness as CaCO₃, mg/l	280	2,540	62	64	150*
Calcium Hardness as CaCO₃, mg/l	80	60	10	10	N/A
Magnesium as CaCO₃, mg/l	180	2,540	30	30	N/A
Calcium as Ca, mg/l	50	340	30	30	60.0*
Color, C.U. (Color Units)	48	0	0	0	15*
Silica as SiO₂, mg/l	8.01	22.00	0.012	0.013	N/A
Conductivity as µS/cm	725	17,770	512	514	N/A
Iron, Fe mg/l	0.360	0.029	0.010	0.011	0.300*
Potassium K, mg/l	7.88	8.70	1.00	1.01	N/A
Copper, Cu, mg/l	< 0.070	< 0.070	< 0.070	< 0.070	1.300^
Manganese, Mn mg/l	0.048	0.150	0.008	0.007	0.050*
Phosphate as PO₄, mg/l	0.24	0.23	1.22	1.15	5.00*
Chloride as Cl₂, mg/l	70	5,465	110	110	250.0*
Fluoride, F, mg/l	0.35	0.28	1.02	1.01	2.00* 4.00^
Nitrate as NO₃, mg/l	0	0	0	0	10.00^
Zinc, Zn, mg/l	0.722	0.220	0.110	0.110	5.000*
Chlorine (free CL₂), mg/l	0.00	0.00	1.11	0.68	0.20@ 4.00^
Lead as Pb, mg/l	< 0.005	< 0.005	< 0.005	< 0.005	0.015^
Corrosiveness	0.22	0.35	1.48	1.29	N/A
pH	7.20	7.20	7.20	7.28	6.5-8.5#
pHs	7.42	7.48	8.55	8.32	N/A
Turbidity, NTU	0.11	0.23	0.10	0.10	1.0^
Total Suspended Solids, mg/l	-----	-----	-----	-----	N/A
Total Dissolved Solids, mg/l	435	11,190	307	308	500.00*
Sulfate as SO₄, mg/l	0.64	200.00	2.20	1.30	250.0*
Sodium as Na, mg/l (est.)	188	3,140	54	52	250.00^
Sulfide as S, mg/l	0	0	0	0	N/A

MCL - Maximum Contaminant Level mg/L = parts per million (ppm) N/A - Not Available; No Limit

* Recommended Maximum @ Mandatory Minimum ^ Mandatory Maximum # Mandatory Range

Click Here For An Explanation For Each Of These Chemical Tests

Page last updated July 22, 2008