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Levels of Treated Water Total Trihalomethanes for LOUISIANA
JANUARY - MARCH 1998
| REMINDER: Data Purpose: The ICR data were collected as part of a national research project to support development of national drinking water standards.
They should NOT be used to determine local water systems compliance with drinking water standards, nor should they be used to make personal judgements about individual health risks.
Units: Sample measurements are taken in micrograms per Liter (ug/L) and are regulated in milligrams per Liter (mg/L). A microgram per Liter is equivalent to one contaminant part per billion (ppb). A ppb can be thought of as one grain of salt in a swimming pool. Data for Total Trihalomethanes, haloacetic acids 5, and bromate are presented in ppb. 1 mg/L = 1000 ug/L, or 0.080 mg/L = 80 ug/L = 80 ppb, which happens to be the TTHM standard in the Stage 1 DBP Rule. Calculation in Regulations is Different: Comparisons with compliance calculations based on the existing Total Trihalomethanes standard in CFR Part 141.30 may not be warranted since the standard i s based on an annual average of public water system quarterly averages and not on treatment plant results as shown here. Also the results here are based on different types of samples. Results of Zero: A result of zero may indicate that a sample was analyzed, but that the result was less than the lowest value that the analytical method can reliably report. |
CITY OF SHREVEPORT WATER
Water Type - SURFACE WATER
(Trea
ted Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| T. L. AMISS WATER TREATMENT PLANT | 391 | Surface Water | JAN 1998 - MAR 1998 | 14.4 |
Jefferson Parish Water Department
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Tota l Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| East Bank Treatment Plant | 393 | Surface Water | JAN 1998 - MAR 1998 | 34.4 |
| West Bank Treatment Plant | 394 | Surface Water | JAN 1998 - MAR 1998 | 35.7 |
Lafayette Utilities System
Water Type - GROUND WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| North Water Treatment Plant | 395 | Ground Water | JAN 1998 - MAR 1998 | 7.2 |
New Orleans Sewerage & Water Board
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Carrollton Water Treatment Plant | 397 | Surface Water | JAN 1998 - MAR 1998 | 14.6 |
THE BATON ROUGE WATER COMPANY
Water Type - GROUND WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| BANKSTON WEST | 722 | Ground Water | JAN 1998 - MAR 1998 | 0 |
| LULA WEST | 392 | Ground Water | JAN 1998 - MAR 1998 | 0 |
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