JOHN HOVANNISIAN WATER SYSTEM
PWS ID: CA2000647 · FRESNO, California 93701
Population Served
80
Total Violations
378
Health-Based Violations
10
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 18
- County
- Madera
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 331
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 80 | 2015 |
| Nitrate | MR | 13 | 2023 |
| Lead and Copper Rule | MR | 13 | 2022 |
| Coliform (TCR) | MCL | 9 | 2014 |
| Nitrite | MR | 6 | 2022 |
| Nitrate-Nitrite | MR | 6 | 2017 |
| Revised Total Coliform Rule | MON | 6 | 2020 |
| Consumer Confidence Rule | Other | 4 | 2011 |
| Arsenic | MR | 4 | 2022 |
| Chromium | MR | 4 | 2022 |
| Mercury | MR | 4 | 2022 |
| Antimony, Total | MR | 4 | 2022 |
| Beryllium, Total | MR | 4 | 2022 |
| Endrin | MR | 4 | 2022 |
| Methoxychlor | MR | 4 | 2022 |
| Dalapon | MR | 4 | 2022 |
| Diquat | MR | 4 | 2022 |
| Glyphosate | MR | 4 | 2022 |
| OXAMYL | MR | 4 | 2022 |
| Di(2-ethylhexyl) phthalate | MR | 4 | 2022 |
| Picloram | MR | 4 | 2022 |
| Dinoseb | MR | 4 | 2022 |
| Carbofuran | MR | 4 | 2022 |
| LASSO | MR | 4 | 2022 |
| Heptachlor | MR | 4 | 2022 |
| Heptachlor epoxide | MR | 4 | 2022 |
| 2,4,5-TP | MR | 4 | 2022 |
| 2,4-D | MR | 4 | 2022 |
| HEXACHLOROBENZENE | MR | 4 | 2022 |
| Benzo(a)pyrene | MR | 4 | 2022 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.