LANGLEY
PWSID: OK1021604 · Langley, OK · Serves 950 people
According to EPA Safe Drinking Water Information System (SDWIS), LANGLEY (PWSID OK1021604) in Langley, OK is listed as a CWS water system covering about 950 people. The same extract lists 14 health-based violation records spanning 1986-2025. Those 14 health-based rows for LANGLEY cover contaminants such as TTHM, Total Haloacetic Acids (HAA5), Surface Water Treatment Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
LANGLEY has 14 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. 4 distinct EPA contaminant codes appear in this system's record, including TTHM, Total Haloacetic Acids (HAA5), Surface Water Treatment Rule. Recorded violations span 1986–2025. 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)
- OK1021604
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Langley, OK
- Population Served
- 950
- Health Violations
- Yes (14)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 6 | 6 |
| Total Haloacetic Acids (HAA5) | 4 | 4 |
| Surface Water Treatment Rule | 3 | 3 |
| Coliform (Pre-TCR) | 1 | 1 |
Violation History (14)
| Contaminant | Health | Date |
|---|---|---|
| Surface Water Treatment Rule | Yes | Jun 1, 2025 |
| Surface Water Treatment Rule | Yes | Jun 1, 2025 |
| Surface Water Treatment Rule | Yes | Jun 1, 2025 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2021 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2020 |
| TTHM | Yes | Jul 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2020 |
| TTHM | Yes | Apr 1, 2020 |
| TTHM | Yes | Apr 1, 2020 |
| TTHM | Yes | Jan 1, 2020 |
| TTHM | Yes | Oct 1, 2019 |
| TTHM | Yes | Oct 1, 2019 |
| Coliform (Pre-TCR) | Yes | Jul 1, 1986 |
Frequently Asked Questions
What does EPA SDWIS list for LANGLEY?
How many people does LANGLEY serve?
What violations does LANGLEY have?
What contaminants have been found in LANGLEY water?
Compare beyond Oklahoma
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest LANGLEY on cumulative violation count (14) and EPA-reported population served (950). Violation-count peers include URIAH HEEPS SPRING WATER SYSTEM, Point Arena Rancheria, UNIVERSITY OF ALASKA - FAIRBANKS. Population peers include Wadsworth, EQUESTRIAN ACRES, LEAVITT LAKE CSD.
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
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About This Data
LANGLEY (OK1021604) is drawn from EPA SDWIS. Nearby county systems in this extract include MAYES CO RWD #4; MAYES CO RWD # 5; MAYES CO RWD # 9; MAYES CO RWD # 3. Health-based rows (14 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.