HOLLISTER
PWSID: OK2007102 · Hollister, OK · Serves 60 people
According to EPA Safe Drinking Water Information System (SDWIS), HOLLISTER (PWSID OK2007102) in Hollister, OK is listed as a CWS water system covering about 60 people. The same extract lists 6 health-based violation records spanning 1987-2024. Those 6 health-based rows for HOLLISTER cover contaminants such as Coliform (Pre-TCR), LEAD AND COPPER RULE REVISIONS, Coliform (TCR); they remain historical EPA registry entries, not a current compliance or drinkability score.
HOLLISTER has 6 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 Coliform (Pre-TCR), LEAD AND COPPER RULE REVISIONS, Coliform (TCR). Recorded violations span 1987–2024. 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)
- OK2007102
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Hollister, OK
- Population Served
- 60
- Health Violations
- Yes (6)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Coliform (Pre-TCR) | 4 | 4 |
| LEAD AND COPPER RULE REVISIONS | 1 | 1 |
| Coliform (TCR) | 1 | 1 |
Violation History (6)
| Contaminant | Health | Date |
|---|---|---|
| LEAD AND COPPER RULE REVISIONS | Yes | Oct 17, 2024 |
| Coliform (TCR) | Yes | May 1, 1994 |
| Coliform (Pre-TCR) | Yes | Sep 1, 1990 |
| Coliform (Pre-TCR) | Yes | Aug 1, 1990 |
| Coliform (Pre-TCR) | Yes | Aug 1, 1988 |
| Coliform (Pre-TCR) | Yes | Feb 1, 1987 |
Frequently Asked Questions
What does EPA SDWIS list for HOLLISTER?
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Compare beyond Oklahoma
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest HOLLISTER on cumulative violation count (6) and EPA-reported population served (60). Violation-count peers include CHEROKEE WATER SYSTEM, LAME DEER WATER SYSTEM, FOUR BEARS WATER SYSTEM.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
HOLLISTER (OK2007102) is drawn from EPA SDWIS. Nearby county systems in this extract include FREDERICK; GRANDFIELD; TIPTON; DAVIDSON. Health-based rows (6 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.