Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
25
health-based violations
62
violations on file
1
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Archived | 1996-08-01 → 1996-08-31 |
| MCL | Health-based | Archived | 1996-08-01 → 1996-08-31 |
| MCL | Health-based | Archived | 1995-08-01 → 1995-08-31 |
| MCL | Health-based | Archived | 1995-08-01 → 1995-08-31 |
| MCL | Health-based | Archived | 1995-08-01 → 1995-08-31 |
| MCL | Health-based | Archived | 1995-07-01 → 1995-07-31 |
| MCL | Health-based | Archived | 1995-07-01 → 1995-07-31 |
| MCL | Health-based | Archived | 1995-07-01 → 1995-07-31 |
| MCL | Health-based | Archived | 1995-07-01 → 1995-07-31 |
| MCL | Health-based | Archived | 1995-07-01 → 1995-07-31 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| PFHXS | 0.0055 µg/L | 2/10 | 2025 |
Other contaminants detected
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 this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 4028 µg/L 40% of the EPA limit 10000 µg/L
worst single sample: 4500 µg/L | 64/108 | SYR4 | 2012–2019 |
| Copper | 1153 µg/L 89% of the EPA limit 1300 µg/L
worst single sample: 1630 µg/L | 59/90 | SYR4 | 2012–2018 |
| Bromodichloromethane | 5.719 µg/L No EPA limit set
worst single sample: 6.23 µg/L | 28/29 | SYR4 | 2012–2019 |
| Chloroform | 12.581 µg/L No EPA limit set
worst single sample: 12.78 µg/L | 28/29 | SYR4 | 2012–2019 |
| TTHM | 19.08 µg/L 24% of the EPA limit 80 µg/L
worst single sample: 20.34 µg/L | 28/28 | SYR4 | 2012–2019 |
| Dibromochloromethane | 5.87 µg/L No EPA limit set
worst single sample: 6.19 µg/L | 27/28 | SYR4 | 2012–2019 |
| Barium | 468 µg/L 23% of the EPA limit 2000 µg/L
worst single sample: 490 µg/L | 25/25 | SYR4 | 2012–2019 |
| Fluoride | 1132 µg/L 28% of the EPA limit 4000 µg/L
worst single sample: 1190 µg/L | 25/25 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 7.994 µg/L 13% of the EPA limit 60 µg/L
worst single sample: 11 µg/L | 19/28 | SYR4 | 2012–2019 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L | 18/18 | LCR | 2025 |
| Bromoform | 2.005 µg/L No EPA limit set
worst single sample: 2.11 µg/L | 16/28 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 3.99 pCi/L 80% of the EPA limit 5 pCi/L
worst single sample: 4.38 pCi/L | 14/17 | SYR4 | 2012–2018 |
| Trichloroacetic Acid | 4.445 µg/L No EPA limit set
worst single sample: 4.9 µg/L | 14/28 | SYR4 | 2012–2019 |
| Lead | 23.16 µg/L 154% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 26.4 µg/L | 13/90 | SYR4 | 2012–2018 |
| Dibromoacetic Acid | 1.955 µg/L No EPA limit set
worst single sample: 2.31 µg/L | 11/28 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 3764 µg/L 38% of the EPA limit 10000 µg/L
worst single sample: 3960 µg/L | 9/14 | SYR4 | 2012–2015 |
| Arsenic | 3.669 µg/L 37% of the EPA limit 10 µg/L
worst single sample: 4.66 µg/L | 6/25 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 5.716 µg/L No EPA limit set
worst single sample: 6.49 µg/L | 5/28 | SYR4 | 2012–2019 |
| Chromium | 12.1315 µg/L 12% of the EPA limit 100 µg/L
worst single sample: 12.5 µg/L | 2/25 | SYR4 | 2012–2019 |
| Trichloroethylene | 0.7834 µg/L 16% of the EPA limit 5 µg/L
worst single sample: 0.7900 µg/L | 2/31 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 2.79 µg/L No EPA limit set | 1/28 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 4 µg/L 80% of the EPA limit 5 µg/L | 1/31 | SYR4 | 2012–2019 |
85 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Belvidere
Is Belvidere tap water safe to drink?
EPA monitoring detected 23 contaminants in Belvidere's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Belvidere's water?
EPA monitoring detected Nitrate, Copper, Bromodichloromethane, Chloroform, TTHM, and others. The full list with the level and data source for each is above.
How many people does Belvidere serve?
Belvidere reports serving 25,339 people in Illinois, per its EPA record.
Has Belvidere had any water quality violations?
The EPA has 62 violations on file for Belvidere, of which 25 are health-based (a contaminant limit or required treatment was breached) and 1 remain open. The rest are monitoring or reporting failures.
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.