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Tap water quality report

Harrisonville, MO

EPA monitoring detected 22 contaminants across the 3 water suppliers serving Harrisonville. 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
17,922
people served
22
contaminants found
Missouri rankings Lead in Missouri PFAS in Missouri

What was found in Harrisonville'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-Nitrite
800 µg/L 8%
of the EPA limit 10000 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
1/3 SYR4
Chlorite
770 µg/L 77%
of the EPA limit 1000 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2018
1/3 SYR4
Fluoride
646.5 µg/L 16%
of the EPA limit 4000 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
1/3 SYR4
Copper
115.9 µg/L 8.9%
of the EPA limit 1300 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
Highest in the city: 236.5 µg/L — CASS COUNTY PWSD 9 · 6,063 people · 2019
3/3 SYR4
Barium
84.565 µg/L 4.2%
of the EPA limit 2000 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
1/3 SYR4
TTHM
63.18 µg/L 79%
of the EPA limit 80 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
3/3 SYR4
Lithium
41 µg/L
No EPA limit set
Highest in the city: CASS COUNTY PWSD 9 · 6,063 people · 2024
1/3 UCMR-5
Chloroform
40.26 µg/L
No EPA limit set
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
3/3 SYR4
Total Haloacetic Acids (HAA5)
39.065 µg/L 65%
of the EPA limit 60 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
3/3 SYR4
Dichloroacetic Acid
22.84 µg/L
No EPA limit set
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
3/3 SYR4
Picloram
19.6 µg/L 3.9%
of the EPA limit 500 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
1/3 SYR4
Monochloroacetic Acid
16.7005 µg/L
No EPA limit set
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
1/3 SYR4
Lead
9.08 µg/L 61%
of the EPA limit 15 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
Highest in the city: 13.68 µg/L — CASS COUNTY PWSD 4 · 1,840 people · 2017
3/3 SYR4
Bromodichloromethane
12.275 µg/L
No EPA limit set
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
3/3 SYR4
Trichloroacetic Acid
9.5925 µg/L
No EPA limit set
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
2/3 SYR4
Monobromoacetic Acid
5.66 µg/L
No EPA limit set
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
Highest in the city: 7.36 µg/L — CASS COUNTY PWSD 9 · 6,063 people · 2019
3/3 SYR4
Dibromochloromethane
4.515 µg/L
No EPA limit set
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
3/3 SYR4
Chromium
2.94 µg/L 2.9%
of the EPA limit 100 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
1/3 SYR4
Dibromoacetic Acid
2.0245 µg/L
No EPA limit set
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
Highest in the city: 2.62 µg/L — CASS COUNTY PWSD 9 · 6,063 people · 2019
3/3 SYR4
Atrazine
1.7785 µg/L 59%
of the EPA limit 3 µg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
1/3 SYR4
Bromoform
0.5780 µg/L
No EPA limit set
Main supplier: HARRISONVILLE PWS · 10,019 people · 2019
Highest in the city: 0.8700 µg/L — CASS COUNTY PWSD 9 · 6,063 people · 2019
2/3 SYR4
Lead
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
Main supplier: HARRISONVILLE PWS · 10,019 people · 2025
Highest in the city: 0.0044 mg/L — CASS COUNTY PWSD 4 · 1,840 people · 2025
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 Harrisonville

SupplierPopulation served
HARRISONVILLE PWS 10,019
CASS COUNTY PWSD 9 6,063
CASS COUNTY PWSD 4 1,840

Frequently asked questions about Harrisonville tap water

Is Harrisonville tap water safe to drink?

EPA testing detected 22 contaminants in the water serving Harrisonville. 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 Harrisonville?

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

What contaminants are in Harrisonville's water?

The contaminants EPA monitoring detected in Harrisonville include Nitrate-Nitrite, Chlorite, Fluoride, Copper, 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.