Is Belvidere, IL Tap Water Safe? Quality & Contaminants

What was found in Belvidere'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.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	4027.9999999999995 µg/L 40% of the EPA limit 10000 µg/L Main supplier: BELVIDERE · 25,339 people · 2019	1/2	SYR4
Nitrate-Nitrite	3764 µg/L 38% of the EPA limit 10000 µg/L Main supplier: BELVIDERE · 25,339 people · 2015	1/2	SYR4
Copper	1152.9999999999998 µg/L 89% of the EPA limit 1300 µg/L Main supplier: BELVIDERE · 25,339 people · 2018	2/2	SYR4
Fluoride	1132 µg/L 28% of the EPA limit 4000 µg/L Main supplier: BELVIDERE · 25,339 people · 2019	1/2	SYR4
Barium	467.99999999999983 µg/L 23% of the EPA limit 2000 µg/L Main supplier: BELVIDERE · 25,339 people · 2019	1/2	SYR4
Lead	23.159999999999993 µg/L 154% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: BELVIDERE · 25,339 people · 2018	2/2	SYR4
TTHM	19.08 µg/L 24% of the EPA limit 80 µg/L Main supplier: BELVIDERE · 25,339 people · 2019	2/2	SYR4
Chloroform	12.581 µg/L No EPA limit set Main supplier: BELVIDERE · 25,339 people · 2019 Highest in the city: 12.972 µg/L — GREENVIEW ESTATES MHP · 710 people · 2019	2/2	SYR4
Chromium	12.131499999999999 µg/L 12% of the EPA limit 100 µg/L Main supplier: BELVIDERE · 25,339 people · 2019	1/2	SYR4
Total Haloacetic Acids (HAA5)	7.993999999999993 µg/L 13% of the EPA limit 60 µg/L Main supplier: BELVIDERE · 25,339 people · 2019 Highest in the city: 10.785 µg/L — GREENVIEW ESTATES MHP · 710 people · 2019	2/2	SYR4
Dibromochloromethane	5.87 µg/L No EPA limit set Main supplier: BELVIDERE · 25,339 people · 2019	2/2	SYR4
Bromodichloromethane	5.718999999999999 µg/L No EPA limit set Main supplier: BELVIDERE · 25,339 people · 2019	2/2	SYR4
Dichloroacetic Acid	5.715999999999999 µg/L No EPA limit set Main supplier: BELVIDERE · 25,339 people · 2019	2/2	SYR4
Trichloroacetic Acid	4.445 µg/L No EPA limit set Main supplier: BELVIDERE · 25,339 people · 2019 Highest in the city: 5.2715 µg/L — GREENVIEW ESTATES MHP · 710 people · 2019	2/2	SYR4
Monochloroacetic Acid	4.58 µg/L No EPA limit set Highest in the city: GREENVIEW ESTATES MHP · 710 people · 2019	1/2	SYR4
Tetrachloroethylene	4 µg/L 80% of the EPA limit 5 µg/L Main supplier: BELVIDERE · 25,339 people · 2019	1/2	SYR4
Combined Radium (-226 And -228)	3.9899999999999998 pCi/L 80% of the EPA limit 5 pCi/L Main supplier: BELVIDERE · 25,339 people · 2018	1/2	SYR4
Arsenic	3.6690000000000005 µg/L 37% of the EPA limit 10 µg/L Main supplier: BELVIDERE · 25,339 people · 2019	1/2	SYR4
Monobromoacetic Acid	2.79 µg/L No EPA limit set Main supplier: BELVIDERE · 25,339 people · 2019	2/2	SYR4
Bromoform	2.005 µg/L No EPA limit set Main supplier: BELVIDERE · 25,339 people · 2019	1/2	SYR4
Dibromoacetic Acid	1.955 µg/L No EPA limit set Main supplier: BELVIDERE · 25,339 people · 2019	2/2	SYR4
Trichloroethylene	0.7834 µg/L 16% of the EPA limit 5 µg/L Main supplier: BELVIDERE · 25,339 people · 2019	1/2	SYR4
PFHXS	0.0055 µg/L No EPA limit set Main supplier: BELVIDERE · 25,339 people · 2025	1/2	UCMR-5
Lead	0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: BELVIDERE · 25,339 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 Belvidere

Supplier	Population served
BELVIDERE	25,339
GREENVIEW ESTATES MHP	710

Frequently asked questions about Belvidere tap water

Is Belvidere tap water safe to drink?

EPA testing detected 24 contaminants in the water serving Belvidere. 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 Belvidere?

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

What contaminants are in Belvidere's water?

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