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Levels of Treated Water Total Trihalomethanes for COLORADO
APRIL - JUNE 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 Aurora, Utilities Dept.
Water Type - SURFACE WATER
(Treated
Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Kuiper Water Treatment Plant | 249 | Surface Water | APR 1998 - JUN 1998 | 46.6 |
| Wemlinger Water Treatment Plant | 250 | Surface Water | APR 1998 - JUN 1998 | 39.4 |
City of Boulder, Dept. of Utilities
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Betasso Water Treatment Plant | 251 | Surface Water | APR 1998 - JUN 1998 | 42.3 |
City of Fort Collins Water Utility
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Fort Collins Water Treatment Facility | 259 | Surface Water | APR 1998 - JUN 1998 | 23.5 |
Colorado Springs Utilities
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Mesa Water Treatment Plant | 257 | Surface Water | APR 1998 - JUN 1998 | 31.3 |
| Pine Valley Water Treatment Plant | 256 | Surface Water | APR 1998 - JUN 1998 | 26.7 |
Denver Water
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Foothills WTP | 253 | Surface Water | APR 1998 - JUN 1998 | 39.6 |
| Moffat WTP | 255 | Surface Water | APR 1998 - JUN 1998 | 35.1 |
Pueblo Board of Water Works
Water Type - SURFACE WATER
(Treated Water)
| Plant Name | Plant ID | Water Type | Quarter | Total Trihalomethanes Concentration (ppb) |
|---|---|---|---|---|
| Whitlock Water Treatment Facility | 260 | Surface Water | APR 1998 - JUN 1998 | 5.6 |
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