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Tap water quality report

Garden City, ID

EPA monitoring detected 18 contaminants across the 1 water supplier serving Garden City. 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.

1
water supplier
12,500
people served
18
contaminants found

What was found in Garden City'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
Nitrate
745 µg/L 7.5%
of the EPA limit 10000 µg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2019
1/1 SYR4
Nitrate-Nitrite
685 µg/L 6.9%
of the EPA limit 10000 µg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2019
1/1 SYR4
Fluoride
426 µg/L 11%
of the EPA limit 4000 µg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2019
1/1 SYR4
Lithium
78.1 µg/L
No EPA limit set
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2024
1/1 UCMR-5
Barium
60 µg/L 3%
of the EPA limit 2000 µg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2019
1/1 SYR4
TTHM
8.179 µg/L 10%
of the EPA limit 80 µg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2019
1/1 SYR4
Combined Uranium
5.8 µg/L 19%
of the EPA limit 30 µg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2019
1/1 SYR4
Arsenic
4.18 µg/L 42%
of the EPA limit 10 µg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2019
1/1 SYR4
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2019
1/1 SYR4
Xylenes, Total
1.3 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2019
1/1 SYR4
PFOS
0.0282 µg/L
No EPA limit set
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2024
1/1 UCMR-5
PFHXS
0.0254 µg/L
No EPA limit set
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2024
1/1 UCMR-5
PFNA
0.0082 µg/L
No EPA limit set
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2024
1/1 UCMR-5
PFBS
0.0067 µg/L
No EPA limit set
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2024
1/1 UCMR-5
Pfhxa
0.0065 µg/L
No EPA limit set
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2024
1/1 UCMR-5
Pfpea
0.0048 µg/L
No EPA limit set
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2024
1/1 UCMR-5
Pfpes
0.0044 µg/L
No EPA limit set
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2024
1/1 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: GARDEN CITY WATER AND SEWER SYSTEM · 12,500 people · 2023
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 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 Garden City

SupplierPopulation served
GARDEN CITY WATER AND SEWER SYSTEM 12,500

Frequently asked questions about Garden City tap water

Is Garden City tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Garden City. 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 Garden City?

1 public water supplier report drinking-water monitoring for Garden City, Idaho to the EPA. Each is listed above with its population served.

What contaminants are in Garden City's water?

The contaminants EPA monitoring detected in Garden City include Nitrate, Nitrate-Nitrite, Fluoride, Lithium, Barium. 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.