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Tap water quality report

Joppa, IL

EPA monitoring detected 18 contaminants across the 2 water suppliers serving Joppa. 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
6,735
people served
18
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Joppa'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
Fluoride
1226 µg/L 31%
of the EPA limit 4000 µg/L
Highest in the city: JOPPA · 445 people · 2018
1/2 SYR4
Barium
325.1 µg/L 16%
of the EPA limit 2000 µg/L
Highest in the city: JOPPA · 445 people · 2018
1/2 SYR4
Copper
86.09999999999998 µg/L 6.6%
of the EPA limit 1300 µg/L
Main supplier: FORT MASSAC PWD · 6,290 people · 2017
Highest in the city: 192.05 µg/L — JOPPA · 445 people · 2019
2/2 SYR4
TTHM
99.81300000000002 µg/L 125%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
2/2 SYR4
Chloroform
57.428000000000026 µg/L
No EPA limit set
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
29.23 µg/L 49%
of the EPA limit 60 µg/L
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
2/2 SYR4
Bromodichloromethane
28.75 µg/L
No EPA limit set
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
2/2 SYR4
Dibromochloromethane
18.5765 µg/L
No EPA limit set
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
2/2 SYR4
Dichloroacetic Acid
16.149999999999995 µg/L
No EPA limit set
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
2/2 SYR4
Trichloroacetic Acid
10.566999999999997 µg/L
No EPA limit set
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
2/2 SYR4
Monobromoacetic Acid
6.182 µg/L
No EPA limit set
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
1/2 SYR4
Dibromoacetic Acid
5 µg/L
No EPA limit set
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
2/2 SYR4
Bromoform
3.8024 µg/L
No EPA limit set
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
2/2 SYR4
Monochloroacetic Acid
3.5854999999999997 µg/L
No EPA limit set
Main supplier: FORT MASSAC PWD · 6,290 people · 2019
1/2 SYR4
Lead
3.05 µg/L 20%
of the EPA limit 15 µg/L
Main supplier: FORT MASSAC PWD · 6,290 people · 2017
1/2 SYR4
Arsenic
2.726749999999999 µg/L 27%
of the EPA limit 10 µg/L
Highest in the city: JOPPA · 445 people · 2018
1/2 SYR4
Combined Radium (-226 And -228)
1.5989999999999998 pCi/L 32%
of the EPA limit 5 pCi/L
Highest in the city: JOPPA · 445 people · 2017
1/2 SYR4
Lead
0.0013 mg/L 8.7%
of the EPA limit 0.0150 mg/L
Main supplier: FORT MASSAC PWD · 6,290 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 Joppa

SupplierPopulation served
FORT MASSAC PWD 6,290
JOPPA 445

Frequently asked questions about Joppa tap water

Is Joppa tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Joppa. 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 Joppa?

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

What contaminants are in Joppa's water?

The contaminants EPA monitoring detected in Joppa include Fluoride, Barium, Copper, TTHM, Chloroform. 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.