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Levels of Treated Water Total Trihalomethanes for MISSOURI
OCTOBER - DECEMBER 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 Utilities of Springfield, MO
Water Type - SURFACE WATER
(Tr
eated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Blackman Water Treatment Plant | 431 | Surface Water | OCT 1998 - DEC 1998 | 26.6 |
City of Independence Water Department
Water Type - GROUND WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Tot al Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| City of Independence W.T.P. | 429 | Ground Water | OCT 1998 - DEC 1998 | 1 |
City of St. Louis Water Division
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Chain of Rocks | 433 | Surface Water | OCT 1998 - DEC 1998 | 36.9 |
| Howard Bend | 434 | Surface Water | OCT 1998 - DEC 1998 | 22.5 |
KANSAS CITY WATER SERVICES
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Kansas City Missouri Water Services | 430 | Surface Water | OCT 1998 - DEC 1998 | 12.1 |
ST. LOUIS COUNTY WATER COMPANY
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Central Plant 1 & 2 | 435 | Surface Water | OCT 1998 - DEC 1998 | 3 |
| Central Plant 3A & 3B | 735 | Surface Water | OCT 1998 - DEC 1998 | 3 |
| Meramec Plant | 437 | Surface Water | OCT 1998 - DEC 1998 | 22.8 |
| North County Plant | 436 | Surface Water | OCT 1998 - DEC 1998 | 8.5 |
| South County Plant | 438 | Surface Water | OCT 1998 - DEC 1998 | 31.8 |
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