Public water system record
Lahaina
Serves Lahaina and Napili-Honokowai, Maui County, HI · 20,065 people served
Federal records show no health-based violations and 3 monitoring/reporting issues for Lahaina in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- Lahaina draws water from 8 wells and 2 surface water intakes.
- Most recent formal enforcement: civil case concluded by Hawaii, July 1997.
- Record on file since 1982, with 35 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 3,103 unknown out of 3,918 service lines.
Check whether Lahaina serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Cryptosporidium
Monitoring and reporting
|
Nov 1, 2016 | Resolved |
|
E. coli
Monitoring and reporting
|
Nov 1, 2016 | Resolved |
|
Turbidity
Monitoring and reporting
|
Nov 1, 2016 | Resolved |
Full record since 1982
EPA's records for Lahaina go back to 1982. Before October 19, 2016 they list 35 health-based violations (9 resolved, 26 archived by EPA without a recorded fix) and 26 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 1 |
| 1990s | 35 | 11 |
| 2000s | 0 | 13 |
| 2010 to October 18, 2016 | 0 | 1 |
| October 19, 2016 to 2019 | 0 | 3 |
Most recent health-based violation before October 19, 2016: Total Coliform (acute), began May 1997, Archived.
Show all 35 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform (acute)
Contaminant limit exceeded
|
May 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 1995 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1994 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1994 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jul 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1994 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1993 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 30, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 30, 1993 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1993 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1992 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1992 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1992 | Resolved |
Enforcement actions
Hawaii regulators took 3 formal enforcement actions against Lahaina between 1994 and 1997. The most recent was a civil case concluded in July 1997.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 14, 1997 | Hawaii | Civil case concluded | 6 violations (5 health-based): Surface Water Treatment Rule |
| Dec 7, 1995 | Hawaii | Civil case concluded | 3 violations (3 health-based): Surface Water Treatment Rule |
| Mar 1, 1994 | Hawaii | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
Where the water comes from
Lahaina draws water from 8 wells and 2 surface water intakes.
Annual water quality report
Lahaina must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Hawaii.
Certified drinking water labs by state EPA guidance for private wells