FLORIDA GEOLOGICAL SURVEY


Table 53. Silver Springs Group water quality analyses.


 Main Blue Grotto Reception Hall
 Analytes 1907 1946 1972 2001 2001 2001
 Unfilt. Filter Unfilt. Filter Unfilt. Filter
Field Measures
Temperature 23.5 23.2 23.5 23.6
DO 2.38 3.16 3.73
pH 7.8 8.1 7.20 7.26 7.24
Sp. Cond. 401 420 471 443 468
Lab Analytes
BOD 0.1 0.2 U 0.2 AU 0.2 U
Turbidity 0 0.05 U 0.05 U 0.05 U
Color 4 0 5U 5U 5U -
Alkalinity 170 176 176 153 153 158 157
Sp. Cond. 510 480 500
TDS 285 273 292
TSS 4U 4U 4U -
C1 7.7 7.8 8.0 9.1 9.2 8.9 9 8.8 8.9
SO4 44 34 39 59 60 63 64 73 74
F 0.1 0.2 0.17 0.17 0.15 0.15 A 0.16 0.16
Nutrients
TOC 8.0 1 U 1 U 1 U -
NO3+NO2 2.6 1.2 1.1 1.5 1.4 1.4 1.4
NH3+NH4 0.01 U 0.01 U 0.01 U 0.025 A 0.011 0.01 U
TKN 0.06 U 0.06 U 0.06 U 0.06 U 0.06 U 0.06 U
P 0.14 0.042 A 0.044 0.038 0.039 0.037 0.038
PO4 0.14 0.03 J 0.042 J 0.045 J
Metals
Ca 73 68 68 73.3 76.5 68.2 A 70 73 74.3
K 1.1 0.2 0.61 0.68 0.65 0.67 0.64 0.68
Na 4.0 4.3 5.92 6.87 5.91 A 6.48 6.04 6.39
Mg 9.2 9.6 9.3 10.7 11.1 11.3 A 11.4 12 12.2
As 3U 3U 3U 3U 3U 3U
Al 75 U 75 U 75 U
B 0 25 U 25 U 25 U
Cd 0 0.75 U 0.75 U 0.75 U 0.75 U 0.75 U 0.75 U
Co 0 0.75 U 0.75 U 0.75 U
Cr 0 2U 2U 2U 2U 2U 2U
Cu 0 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U
Fe 20 35 U 35 U 35 U 35 U 35 U 35 U
Mn 0 1U 1U 1U 1U 1U 1U
Ni 2U 2U 2U 2U 2U 2U
Pb 2 5U 4U 5U 4U 5U 4U
Se 4U 4U 4U 4U 4U 4U
Sn -10 U 10 U 10 U
Sr 500 693 676 A 782
Zn -1 5U 5U 5U 5U 121 5U
A=Average Value U,K=Compound not detected, value shown is the method detection limit
I=Value is less than practical quantitation limit J=Estimated value Q=Exceeding holding time limit