Tap WaterIndex

← AS

Tap water quality report

Ofu - Olosega, AS

EPA monitoring detected 10 contaminants across the 1 water supplier serving Ofu - Olosega. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
270
people served
10
contaminants found
AS rankings Lead in AS PFAS in AS

What was found in Ofu - Olosega's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
300 µg/L 3%
of the EPA limit 10000 µg/L
 1/1 SYR4
Fluoride
92 µg/L 2.3%
of the EPA limit 4000 µg/L
 1/1 SYR4
Barium
14 µg/L 0.7%
of the EPA limit 2000 µg/L
 1/1 SYR4
Chromium
6.1 µg/L 6.1%
of the EPA limit 100 µg/L
 1/1 SYR4
Gross Beta Particle Activity
4.73 pCi/L
No EPA limit set
 1/1 SYR4
TTHM
2.8 µg/L 3.5%
of the EPA limit 80 µg/L
 1/1 SYR4
Combined Uranium
2.5777 µg/L 8.6%
of the EPA limit 30 µg/L
 1/1 SYR4
Combined Radium (-226 And -228)
1.9 pCi/L 38%
of the EPA limit 5 pCi/L
 1/1 SYR4
Gross Alpha, Excl. Radon And U
1.73 pCi/L 12%
of the EPA limit 15 pCi/L
 1/1 SYR4
Lead
0.00050 mg/L 3.3%
of the EPA limit 0.0150 mg/L
 1/1 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Ofu - Olosega

SupplierPopulation served
Ofu - Olosega ASG 270

Frequently asked questions about Ofu - Olosega tap water

Is Ofu - Olosega tap water safe to drink?

EPA testing detected 10 contaminants in the water serving Ofu - Olosega. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Ofu - Olosega?

1 public water supplier report drinking-water monitoring for Ofu - Olosega, AS to the EPA. Each is listed above with its population served.

What contaminants are in Ofu - Olosega's water?

The contaminants EPA monitoring detected in Ofu - Olosega include Nitrate, Fluoride, Barium, Chromium, Gross Beta Particle Activity. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.