Civil Engineering Reference
In-Depth Information
TABLE 2-3. National Occurrence of Fluoride in Public Water Supply
Surface Water
Systems with Fluoride (mg / L)
Groundwater
Systems with Fluoride (mg / L)
Population Served
1.0
1.0-2.0
2.0-4.0
4.0
1.0
1.0-2.0
2.0-4.0
4.0
Less than 500
3,670
117
5
3
31,931
2,281
833
220
500 to 2,500
2,980
265
6
1
8,964
341
165
40
2,500 to 10,000
1,967
174
3
2
2,828
219
44
14
More than 10,000
1,615
148
2
0
1,187
48
6
2
