HENNESSEY
PWSID: OK2003704 · Hennessey, OK · Serves 2,058 people
According to EPA Safe Drinking Water Information System (SDWIS), HENNESSEY (PWSID OK2003704) in Hennessey, OK is listed as a CWS water system covering about 2,058 people. The same extract lists 11 health-based violation records spanning 1986-2022. Those 11 health-based rows for HENNESSEY cover contaminants such as Nitrate-Nitrite, Coliform (Pre-TCR), Coliform (TCR); they remain historical EPA registry entries, not a current compliance or drinkability score.
HENNESSEY has 11 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 3 distinct EPA contaminant codes appear in this system's record, including Nitrate-Nitrite, Coliform (Pre-TCR), Coliform (TCR). Recorded violations span 1986–2022. Day-to-day primacy enforcement for this system runs through the Oklahoma drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Oklahoma state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- OK2003704
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Hennessey, OK
- Population Served
- 2,058
- Health Violations
- Yes (11)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Nitrate-Nitrite | 4 | 4 |
| Coliform (Pre-TCR) | 4 | 4 |
| Coliform (TCR) | 3 | 3 |
Violation History (11)
| Contaminant | Health | Date |
|---|---|---|
| Nitrate-Nitrite | Yes | Jan 1, 2022 |
| Nitrate-Nitrite | Yes | Jul 1, 2020 |
| Nitrate-Nitrite | Yes | Oct 1, 2014 |
| Nitrate-Nitrite | Yes | Jan 1, 2014 |
| Coliform (TCR) | Yes | Jun 1, 1996 |
| Coliform (TCR) | Yes | May 1, 1992 |
| Coliform (TCR) | Yes | Dec 1, 1991 |
| Coliform (Pre-TCR) | Yes | Aug 1, 1990 |
| Coliform (Pre-TCR) | Yes | May 1, 1989 |
| Coliform (Pre-TCR) | Yes | Jan 1, 1987 |
| Coliform (Pre-TCR) | Yes | Sep 1, 1986 |
Frequently Asked Questions
What does EPA SDWIS list for HENNESSEY?
How many people does HENNESSEY serve?
What violations does HENNESSEY have?
What contaminants have been found in HENNESSEY water?
Compare beyond Oklahoma
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest HENNESSEY on cumulative violation count (11) and EPA-reported population served (2,058). Violation-count peers include MICCOSUKEE TRIBE OF INDIANS, Arizona Village, WHITE SWAN. Population peers include SILVERHILL, TOWN OF, DAVISBORO, ELMWOOD.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
Explore More
About This Data
HENNESSEY (OK2003704) is drawn from EPA SDWIS. Nearby county systems in this extract include KINGFISHER; CASHION; DOVER PUBLIC WORKS TRUST AUTH; KINGFISHER CO RWD #3. Health-based rows (11 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.