Public water system record
Hilo
Serves Hilo and Wainaku, Hawaii County, HI · 39,477 people served
Federal records show no health-based violations and no monitoring or reporting issues for Hilo 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
- 0
Key facts
- Hilo draws water from 8 wells (1 of them for emergency, seasonal or other part-time use).
- Record on file since 1995, with 48 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 16,429 service lines.
Check whether Hilo 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, and no monitoring or reporting violations either.
Full record since 1995
EPA's records for Hilo go back to 1995. Before October 19, 2016 they list 48 health-based violations (2 resolved, 46 archived by EPA without a recorded fix) and no monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 46 | 0 |
| 2000s | 2 | 0 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began January 2009, Resolved.
Show all 48 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2009 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2000 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1995 | Archived |
Where the water comes from
Hilo draws water from 8 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Hilo 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