National Drinking Water Database
City of Riverside Public Utilities Utilities - Riverside, CA
Serves 280,832 people
Thiobencarb (Bolero)
Thiobencarb is an herbicide used in rice production.Testing Summary
| Contaminant | Average/ Maximum Result | Health Limit Exceeded | Legal Limit Exceeded | Testing History -Tested  -Detected  -Over Health Guidelines  -Over Legal Limit* |
|---|---|---|---|---|
| Thiobencarb (Bolero)Thiobencarb is an herbicide used in rice production. | 0 ppb 0 ppb | No 70 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 Thiobencarb (Bolero)
Health Based Limits for Thiobencarb (Bolero)
| Standard | Description | Level |
|---|---|---|
| California Public Health Goals | Defined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health. | 70 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. | 70 ppb |
Testing Results
| Testing Date | Average Result | Samples taken that day | Number of Non-Detects | Range of Results |
|---|---|---|---|---|
| 2009-07-07 | 0 ppb | 1 | 1 | 0 ppb |
| 2009-06-02 | 0 ppb | 1 | 1 | 0 ppb |
| 2009-03-03 | 0 ppb | 1 | 1 | 0 ppb |
| 2009-02-03 | 0 ppb | 1 | 1 | 0 ppb |
| 2009-01-09 | 0 ppb | 1 | 1 | 0 ppb |
| 2008-11-04 | 0 ppb | 1 | 1 | 0 ppb |
| 2008-10-07 | 0 ppb | 1 | 1 | 0 ppb |
| 2008-09-02 | 0 ppb | 1 | 1 | 0 ppb |
| 2008-07-01 | 0 ppb | 1 | 1 | 0 ppb |
| 2008-06-03 | 0 ppb | 1 | 1 | 0 ppb |
| 2008-02-26 | 0 ppb | 1 | 1 | 0 ppb |
| 2007-07-10 | 0 ppb | 1 | 1 | 0 ppb |
| 2006-10-20 | 0 ppb | 1 | 1 | 0 ppb |
| 2006-07-11 | 0 ppb | 1 | 1 | 0 ppb |
| 2005-08-18 | 0 ppb | 1 | 1 | 0 ppb |
| 2005-02-10 | 0 ppb | 1 | 1 | 0 ppb |
| 2004-08-27 | 0 ppb | 1 | 1 | 0 ppb |
| 2004-06-25 | 0 ppb | 1 | 1 | 0 ppb |
| 2004-05-27 | 0 ppb | 2 | 2 | 0 ppb |