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Dare County Water Department 

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STUMPY POINT WATER PLANT
RAW, FINISHED & DISTRIBUTED QUARTERLY ANALYSIS

Raw Water: Well water before any treatment
Finished Water: Product water immediately down stream of the RO process
Distributed Water: Product water after it has left our 75,000 gallon storage tank.


May 2008                             

CHEMICAL

WELL WATER RAW

FINISHED WATER QUALITY

DISTRIBUTED WATER QUALITY

MCL

P - Alkalinity as CaCO3, mg/l 0 0 0 N/A
Total Alkalinity CaCO3, mg/l 710 15 18 N/A
Bicarbonate as HCO3, mg/l 865.85 18.29 21.95 N/A
Carbonate as CO3, mg/l 866 18 22 N/A
Hydroxide as OH, mg/l 0 0 0 N/A
Total Hardness as CaCO3, mg/l 38 12 12 150*
Calcium Hardness as CaCO3, mg/l 15 12 12 N/A
Magnesium as CaCO3, mg/l 23 0 0 N/A
Calcium as Ca, mg/l 6 5 5 60.0*
Color, C. U. (Color Units) 289 1 1 15*
Silica as SiO2, mg/l 28 1 2 N/A
Conductivity as µS/cm 1479 92 95 N/A
Iron, Fe mg/l 0.055 0.019 0.01 0.300*
Potassium K, mg/l 9.0 0.1 0.1 N/A
Copper, Cu, mg/l < 0.070 < 0.070 < 0.070 1.300^
Manganese, Mn mg/l 0.006 0.003 0.003 0.050*
Phosphate as PO4, mg/l 4.420 0.931 1.085 5.00*
Chloride as Cl-, mg/l 260 24 24 250.0*
Fluoride, F, mg/l 0.51 1.02 0.97 2.00*
4.00^
Nitrate as NO3, mg/l 0 0 0 10.00^
Zinc, Zn, mg/l 0.086 0.246 0.246 5.000*
Chlorine (free CL2), mg/l 0.00 1.67 1.66 0.20@
4.00^
Lead, Pb, mg/l < 0.005 < 0.005 < 0.005 0.015^
Corrosiveness 0.27 1.83 1.72 N/A
pH 8.34 7.80 7.82 6.5-8.5#
pHs 8.07 9.63 9.54 N/A
Turbidity, N.T.U. 0.07 0.00 0 1.0^
Total Suspended Solids, mg/l ------- -------- -------- N/A
Total Dissolved Solids, mg/l 735 44 44 500*
Sulfate as SO4, mg/l 0.00 0.00 0.00 250.0*
Sodium as Na, mg/l (est.) 1103.30 30.44 34.88 250.00^
Sulfide as S, mg/l 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 May 27, 2008