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Tap water quality report

Chalan Lau Lau, MP

EPA monitoring detected 6 contaminants across the 2 water suppliers serving Chalan Lau Lau. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
1,622
people served
6
contaminants found
MP rankings Lead in MP PFAS in MP

What was found in Chalan Lau Lau's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
TTHM
12.3875 µg/L 15%
of the EPA limit 80 µg/L
Main supplier: Star Water · 1,522 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
2.6 µg/L 4.3%
of the EPA limit 60 µg/L
Main supplier: Star Water · 1,522 people · 2019
1/2 SYR4
Combined Uranium
1.13985 µg/L 3.8%
of the EPA limit 30 µg/L
Main supplier: Star Water · 1,522 people · 2019
1/2 SYR4
Gross Alpha, Excl. Radon And U
0.8000 pCi/L 5.3%
of the EPA limit 15 pCi/L
Main supplier: Star Water · 1,522 people · 2019
1/2 SYR4
Combined Radium (-226 And -228)
0.7738 pCi/L 15%
of the EPA limit 5 pCi/L
Main supplier: Star Water · 1,522 people · 2019
1/2 SYR4
Lead
0.00060 mg/L 4%
of the EPA limit 0.0150 mg/L
Main supplier: Star Water · 1,522 people · 2022
Highest in the city: 0.0148 mg/L — Saipan Vegas · 100 people · 2025
2/2 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 95th percentile of the system's samples — 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 Chalan Lau Lau

SupplierPopulation served
Star Water 1,522
Saipan Vegas 100

Frequently asked questions about Chalan Lau Lau tap water

Is Chalan Lau Lau tap water safe to drink?

EPA testing detected 6 contaminants in the water serving Chalan Lau Lau. 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 Chalan Lau Lau?

2 public water suppliers report drinking-water monitoring for Chalan Lau Lau, MP to the EPA. Each is listed above with its population served.

What contaminants are in Chalan Lau Lau's water?

The contaminants EPA monitoring detected in Chalan Lau Lau include TTHM, Total Haloacetic Acids (HAA5), Combined Uranium, Gross Alpha, Excl. Radon And U, Combined Radium (-226 And -228). The full list, with the level at the main supplier 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.