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Grain Valley, MO

EPA monitoring detected 13 contaminants across the 2 water suppliers serving Grain Valley. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
18,530
people served
13
contaminants found
Missouri rankings Lead in Missouri PFAS in Missouri

What was found in Grain Valley'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
Copper
415 µg/L 32%
of the EPA limit 1300 µg/L
 2/2 SYR4
Lithium
38.6 µg/L
No EPA limit set
 1/2 UCMR-5
TTHM
13.8 µg/L 17%
of the EPA limit 80 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
13.3 µg/L 22%
of the EPA limit 60 µg/L
 2/2 SYR4
Dichloroacetic Acid
10.4 µg/L
No EPA limit set
 2/2 SYR4
Chloroform
6.59 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
4.12 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
4.02 µg/L
No EPA limit set
 1/2 SYR4
Dibromoacetic Acid
3.42 µg/L
No EPA limit set
 1/2 SYR4
Bromoform
2.87 µg/L
No EPA limit set
 1/2 SYR4
Lead
2.74 µg/L 18%
of the EPA limit 15 µg/L
 1/2 SYR4
Trichloroacetic Acid
1.71 µg/L
No EPA limit set
 1/2 SYR4
Lead
0.0015 mg/L 9.9%
of the EPA limit 0.0150 mg/L
 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 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 Grain Valley

SupplierPopulation served
GRAIN VALLEY PWS 16,000
JACKSON COUNTY PWSD 17 2,530

Frequently asked questions about Grain Valley tap water

Is Grain Valley tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Grain Valley. 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 Grain Valley?

2 public water suppliers report drinking-water monitoring for Grain Valley, Missouri to the EPA. Each is listed above with its population served.

What contaminants are in Grain Valley's water?

The contaminants EPA monitoring detected in Grain Valley include Copper, Lithium, TTHM, Total Haloacetic Acids (HAA5), Dichloroacetic Acid. 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.