Guam Water Quality Report
16 cities ranked · Average grade: B+ · Guam
Avg Score
81
Cities Ranked
16
Health Violations
16
PFAS Detected
12
81
County avg score
16
Cities ranked
100%
A or B grade
0%
D or F grade
16
Health violations
12
PFAS detected
Grade Distribution
How Guam cities scored
A
2
13%
Excellent
B
14
88%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Guam average
▲ 81.0 pts above state average
City Map
Water quality across Guam
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Guam
Full Rankings
All 16 cities in Guam
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Talofofo | A | 91.7 | 6K | 11 | Health Unresolved | |
| 2 | Apo Ap | A | 91.6 | 8K | 4 | Health Unresolved | |
| 3 | Apra Heights | B+ | 82.8 | 21K | 40 | Health Unresolved | |
| 4 | Apra Heights | B+ | 82.8 | 21K | 40 | Health Unresolved | |
| 5 | Apra Heights | B+ | 82.8 | 21K | 40 | Health Unresolved | |
| 6 | Talofofo | B+ | 82.7 | 139K | 16 | Health PFAS Unresolved | |
| 7 | Talofofo | B+ | 82.7 | 139K | 16 | Health PFAS Unresolved | |
| 8 | Talofofo | B+ | 82.7 | 139K | 16 | Health PFAS Unresolved | |
| 9 | Talofofo | B+ | 82.7 | 139K | 16 | Health PFAS Unresolved | |
| 10 | Talofofo | B+ | 81.4 | 145K | 27 | Health PFAS Unresolved | |
| 11 | Talofofo | B | 75.4 | 161K | 56 | Health PFAS Unresolved | |
| 12 | Talofofo | B | 75.4 | 161K | 56 | Health PFAS Unresolved | |
| 13 | Talofofo | B | 75.4 | 161K | 56 | Health PFAS Unresolved | |
| 14 | Talofofo | B | 75.4 | 161K | 56 | Health PFAS Unresolved | |
| 15 | Talofofo | B | 75.4 | 161K | 56 | Health PFAS Unresolved | |
| 16 | Apra Heights | B | 75.3 | 34K | 48 | Health Unresolved |