sierra, CA
Total Incidents:
128
Last Incident:
July 01, 2016
Note: Just because the latest incident is in 2017 or 2018 doesn’t mean your water is free of contaminants! There is a considerable lag between when data is collected and when it is published by the EPA.
All Incidents (Page 2)
| Water System | Type | Measure | Violation | Effects | Begin Date |
|---|---|---|---|---|---|
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2010-07-01 |
| TNF-LOGGER & STAMPEDE RC | Coliform (TCR) | MCL, Monthly (TCR) | Maximum Contaminant Level Violation | Not a health threat in itself; it is used to indicate whether other potentially harmful bacteria may be present5 | 2010-07-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2010-04-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2010-04-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2010-04-01 |
| R.R. LEWIS SMALL WC | Coliform (TCR) | MCL, Monthly (TCR) | Maximum Contaminant Level Violation | Not a health threat in itself; it is used to indicate whether other potentially harmful bacteria may be present5 | 2010-02-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2010-01-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2010-01-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2010-01-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-10-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-10-01 |
| R.R. LEWIS SMALL WC | Coliform (TCR) | MCL, Acute (TCR) | Maximum Contaminant Level Violation | Not a health threat in itself; it is used to indicate whether other potentially harmful bacteria may be present5 | 2009-10-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-10-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-07-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-07-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-07-01 |
| R.R. LEWIS SMALL WC | Coliform (TCR) | MCL, Monthly (TCR) | Maximum Contaminant Level Violation | Not a health threat in itself; it is used to indicate whether other potentially harmful bacteria may be present5 | 2009-06-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-04-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-04-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-04-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-01-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2009-01-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2008-10-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2008-10-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2008-10-01 |
| SIERRA CO. W.W.D #1 CALPINE | Arsenic | MCL, Average | Maximum Contaminant Level Violation | Skin damage or problems with circulatory systems, and may have increased risk of getting cancer | 2008-10-01 |
| ALLEGHANY COUNTY W.D. | Lead | MPL Non-Compliance | Treatment Technique Violation | Infants and children: Delays in physical or mental development; children could show slight deficits in attention span and learning abilities | 2007-08-21 |
| ALLEGHANY COUNTY W.D. | Lead | MPL Non-Compliance | Treatment Technique Violation | Infants and children: Delays in physical or mental development; children could show slight deficits in attention span and learning abilities | 2007-08-21 |