CHESTER SANITARY DISTRICT
South Dakota — Community Water System — PWSID: SD4600088
System Information
| PWSID | SD4600088 |
| System Name | CHESTER SANITARY DISTRICT |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | South Dakota |
| City | EGAN |
| ZIP Code | 57024 |
| Address | 23343 479 AVE |
| Organization | CHESTER SANITARY DISTRICT |
| Phone | 6059972098 |
Population & Service
| Population Served | 363 |
| Service Connections | 141 |
Drinking Water Violations (122)
This water system has 122 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2003 | — | Other | No | No | — | — | — | Resolved | Oct 8, 2003 | — | |
| Jul 1, 2003 | — | Other | No | No | — | — | — | Resolved | Oct 8, 2003 | — | |
| Jul 1, 1995 | May 7, 1996 | MR | No | No | — | TT | — | Resolved | May 7, 1996 | — | |
| Jul 1, 1995 | May 7, 1996 | MR | No | No | — | TT | — | Resolved | May 7, 1996 | — | |
| Jul 1, 1995 | May 7, 1996 | MR | No | No | — | TT | — | Resolved | May 7, 1996 | — | |
| Jan 1, 1995 | May 7, 1996 | MR | No | No | — | TT | — | Resolved | May 7, 1996 | — | |
| Jan 1, 1995 | May 7, 1996 | MR | No | No | — | TT | — | Resolved | May 7, 1996 | — | |
| Feb 1, 1994 | Feb 28, 1994 | MR | No | No | — | 5% of samples | — | Archived | Feb 28, 1994 | — | |
| Feb 1, 1994 | Feb 28, 1994 | MR | No | No | — | 5% of samples | — | Archived | Feb 28, 1994 | — | |
| Jan 1, 1994 | Jul 19, 1994 | MR | No | No | — | TT | — | Resolved | Jul 19, 1994 | — | |
| Jan 1, 1994 | Jul 19, 1994 | MR | No | No | — | TT | — | Resolved | Jul 19, 1994 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 1995 | — | |
| Jan 1, 1993 | Dec 31, 1995 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1995 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.