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Tap water quality report

St. James, MO

EPA monitoring detected 18 contaminants across the 3 water suppliers serving St. James. 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.

3
water suppliers
4,166
people served
18
contaminants found
Missouri rankings Lead in Missouri PFAS in Missouri

What was found in St. James'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
Barium
377 µg/L 19%
of the EPA limit 2000 µg/L
Main supplier: ST JAMES PWS · 3,935 people · 2018
3/3 SYR4
Fluoride
130 µg/L 3.3%
of the EPA limit 4000 µg/L
Main supplier: ST JAMES PWS · 3,935 people · 2018
1/3 SYR4
Copper
119.2 µg/L 9.2%
of the EPA limit 1300 µg/L
Main supplier: ST JAMES PWS · 3,935 people · 2018
3/3 SYR4
Lead
3.3005 µg/L 22%
of the EPA limit 15 µg/L
Main supplier: ST JAMES PWS · 3,935 people · 2018
Highest in the city: 45.16 µg/L — KVC · 200 people · 2019
3/3 SYR4
Nitrate-Nitrite
12 µg/L 0.1%
of the EPA limit 10000 µg/L
Main supplier: ST JAMES PWS · 3,935 people · 2019
Highest in the city: 29 µg/L — FERNDALE RESIDENTIAL CARE II · 31 people · 2019
2/3 SYR4
Gross Alpha, Excl. Radon And U
6.12 pCi/L 41%
of the EPA limit 15 pCi/L
Main supplier: ST JAMES PWS · 3,935 people · 2014
1/3 SYR4
Chromium
2.5935 µg/L 2.6%
of the EPA limit 100 µg/L
Main supplier: ST JAMES PWS · 3,935 people · 2018
Highest in the city: 4.045 µg/L — KVC · 200 people · 2018
2/3 SYR4
Toluene
3.9 µg/L 0.4%
of the EPA limit 1000 µg/L
Main supplier: ST JAMES PWS · 3,935 people · 2018
1/3 SYR4
Arsenic
3.1245 µg/L 31%
of the EPA limit 10 µg/L
Main supplier: ST JAMES PWS · 3,935 people · 2018
1/3 SYR4
Combined Radium (-226 And -228)
2.09 pCi/L 42%
of the EPA limit 5 pCi/L
Main supplier: ST JAMES PWS · 3,935 people · 2019
1/3 SYR4
PFHXS
0.0225 µg/L
No EPA limit set
Main supplier: ST JAMES PWS · 3,935 people · 2023
1/3 UCMR-5
Pfhxa
0.0119 µg/L
No EPA limit set
Main supplier: ST JAMES PWS · 3,935 people · 2023
1/3 UCMR-5
Pfpea
0.0110 µg/L
No EPA limit set
Main supplier: ST JAMES PWS · 3,935 people · 2023
1/3 UCMR-5
PFOS
0.0099 µg/L
No EPA limit set
Main supplier: ST JAMES PWS · 3,935 people · 2023
1/3 UCMR-5
PFBS
0.0065 µg/L
No EPA limit set
Main supplier: ST JAMES PWS · 3,935 people · 2023
1/3 UCMR-5
Pfpes
0.0063 µg/L
No EPA limit set
Main supplier: ST JAMES PWS · 3,935 people · 2023
1/3 UCMR-5
Pfhpa
0.0046 µg/L
No EPA limit set
Main supplier: ST JAMES PWS · 3,935 people · 2023
1/3 UCMR-5
Lead
0.0011 mg/L 7.2%
of the EPA limit 0.0150 mg/L
Main supplier: ST JAMES PWS · 3,935 people · 2025
Highest in the city: 0.0022 mg/L — FERNDALE RESIDENTIAL CARE II · 31 people · 2024
3/3 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 St. James

SupplierPopulation served
ST JAMES PWS 3,935
KVC 200
FERNDALE RESIDENTIAL CARE II 31

Frequently asked questions about St. James tap water

Is St. James tap water safe to drink?

EPA testing detected 18 contaminants in the water serving St. James. 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 St. James?

3 public water suppliers report drinking-water monitoring for St. James, Missouri to the EPA. Each is listed above with its population served.

What contaminants are in St. James's water?

The contaminants EPA monitoring detected in St. James include Barium, Fluoride, Copper, Lead, Nitrate-Nitrite. 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.