National Drinking Water Database
Arlington Water Utilities Utilities - Fort Worth, TX
Serves 290,000 people
Hexachlorobutadiene
Hexachlorobutadiene is an intermediate in manufacture of rubber compounds and fluorinated lubricants; it is used in numerous industrial applications as a solvent and a heat transfer liquid.Testing Summary
| Contaminant | Average/ Maximum Result | Health Limit Exceeded | Legal Limit Exceeded | Testing History -Tested  -Detected  -Over Health Guidelines  -Over Legal Limit* |
|---|---|---|---|---|
| HexachlorobutadieneHexachlorobutadiene is an intermediate in manufacture of rubber compounds and fluorinated lubricants; it is used in numerous industrial applications as a solvent and a heat transfer liquid. | 0 ppb 0 ppb | No 0.44 ppb | Legal at any levelThis is the Federal Limit. State Limits may be lower. |  |
| NOTE: Each dot in the above graph represents one month. * Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance. | ||||
Health Based and Legal Limits for Hexachlorobutadiene
Health Based Limits for Hexachlorobutadiene
| Standard | Description | Level |
|---|---|---|
| EPA Human Health Water Quality Criteria | Water quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency. | 0.44 ppb |
| One in one million (10-6) Cancer Risk | The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency. | 0.9 ppb |
| Health-Based Screening Level | A benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey. | 0.9 ppb-90 ppb |
| Drinking Water Equivalent Level | A lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency. | 10 ppb |
| One in ten thousand (10-4) Cancer Risk | The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency. | 90 ppb |
| Children's health-based limit for 1-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 300 ppb |
| Children's health-based limit for 10-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 300 ppb |
Testing Results
| Testing Date | Average Result | Samples taken that day | Number of Non-Detects | Range of Results |
|---|---|---|---|---|
| 2007-07-30 | 0 ppb | 2 | 2 | 0 ppb |
| 2006-07-26 | 0 ppb | 4 | 4 | 0 ppb |
| 2005-07-12 | 0 ppb | 4 | 4 | 0 ppb |
| 2004-07-27 | 0 ppb | 2 | 2 | 0 ppb |