DIAMOND
PWS ID: IL0630250 · DIAMOND, Illinois 60416
Population Served
2,508
Total Violations
346
Health-Based Violations
145
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 920
- County
- Grundy
- School/Daycare
- No
- MCL Violations
- 145
- Monitoring Violations
- 181
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL | 84 | 2003 |
| Coliform (TCR) | MR | 63 | 2004 |
| Gross Alpha, Excl. Radon and U | MCL | 46 | 2000 |
| Coliform (TCR) | MCL | 15 | 2004 |
| Nitrate | MR | 6 | 1999 |
| Lead and Copper Rule | MR | 4 | 1998 |
| Combined Radium (-226 and -228) | MR | 4 | 2015 |
| TTHM | MR | 4 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2015 |
| Methoxychlor | MR | 3 | 1999 |
| Toxaphene | MR | 3 | 1999 |
| Heptachlor | MR | 3 | 1999 |
| Heptachlor epoxide | MR | 3 | 1999 |
| Pentachlorophenol | MR | 3 | 1999 |
| Total Polychlorinated Biphenyls (PCB) | MR | 3 | 1999 |
| Chlordane | MR | 3 | 1999 |
| Diquat | MR | 3 | 1999 |
| Endothall | MR | 3 | 1999 |
| Di(2-ethylhexyl) adipate | MR | 3 | 1999 |
| Simazine | MR | 3 | 1999 |
| Picloram | MR | 3 | 1999 |
| Dinoseb | MR | 3 | 1999 |
| Aldicarb sulfoxide | MR | 3 | 1999 |
| Benzo(a)pyrene | MR | 3 | 1999 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 1997 |
| 2,4,5-TP | MR | 3 | 1999 |
| LASSO | MR | 3 | 1999 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 3 | 1999 |
| Carbofuran | MR | 3 | 1999 |
| Atrazine | MR | 3 | 1999 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.