Public water system record
Gwa Southern Water System
Serves an area of Guam, GU that includes Talo'fo'fo, Windward Hills, Malojloj and 4 more places · 5,801 people served
Federal records show 1 health-based violation and no monitoring/reporting issues for Gwa Southern Water System in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 0
Key facts
- Gwa Southern Water System draws water from 1 surface water intake.
- Most recent enforcement action: boil water order by Guam, February 2018.
- Record on file since 1980, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 2,319 unknown out of 2,365 service lines.
Check whether Gwa Southern Water System 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Jan 1, 2018 | Resolved | Yes |
Full record since 1980
EPA's records for Gwa Southern Water System go back to 1980. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 8 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 8 |
| 2010 to October 18, 2016 | 1 | 0 |
| October 19, 2016 to 2019 | 1 | 0 |
Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began January 2012, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.065 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Jan 1, 2012 | Resolved |
Enforcement actions
Guam regulators issued 1 boil water order to Gwa Southern Water System in 2018. The most recent was a boil water order in February 2018.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 22, 2018 | Guam | Boil water order | 1 violation (1 health-based): Revised Total Coliform Rule |
What the violations mean
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Gwa Southern Water System draws water from 1 surface water intake.
Annual water quality report
Gwa Southern Water System 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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 Guam.
Certified drinking water labs by state EPA guidance for private wells