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.
245
health-based violations
282
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2012-01-01 → 2012-03-31 |
| MCL | Health-based | Resolved | 2012-01-01 → 2012-03-31 |
| MCL | Health-based | Resolved | 2012-01-01 → 2012-03-31 |
| MCL | Health-based | Resolved | 2012-01-01 → 2012-03-31 |
| MCL | Health-based | Resolved | 2012-01-01 → 2012-03-31 |
| MCL | Health-based | Resolved | 2012-01-01 → 2012-03-31 |
| MCL | Health-based | Resolved | 2011-10-01 → 2011-12-31 |
| MCL | Health-based | Resolved | 2011-10-01 → 2011-12-31 |
| MCL | Health-based | Resolved | 2011-10-01 → 2011-12-31 |
| MCL | Health-based | Resolved | 2011-10-01 → 2011-12-31 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
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 | 3905 µg/L 39% of the EPA limit 10000 µg/L
worst single sample: 4400 µg/L | 234/390 | SYR4 | 2012–2019 |
| Copper | 1500 µg/L 115% of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 3400 µg/L | 214/214 | SYR4 | 2013–2019 |
| Lead | 8.18 µg/L 55% of the EPA limit 15 µg/L
worst single sample: 110 µg/L | 103/213 | SYR4 | 2013–2019 |
| TTHM | 17.4755 µg/L 22% of the EPA limit 80 µg/L
worst single sample: 42 µg/L | 94/94 | SYR4 | 2012–2019 |
| Chloroform | 12.28 µg/L No EPA limit set
worst single sample: 34 µg/L | 93/94 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 5 pCi/L 100% of the EPA limit 5 pCi/L
worst single sample: 6 pCi/L | 91/96 | SYR4 | 2012–2019 |
| Bromodichloromethane | 3.803 µg/L No EPA limit set
worst single sample: 6.3 µg/L | 90/94 | SYR4 | 2012–2019 |
| Dibromochloromethane | 2.1185 µg/L No EPA limit set
worst single sample: 3.5 µg/L | 68/94 | SYR4 | 2012–2019 |
| Trichloroethylene | 1.7 µg/L 34% of the EPA limit 5 µg/L
worst single sample: 2.2 µg/L | 68/168 | SYR4 | 2012–2019 |
| Barium | 345 µg/L 17% of the EPA limit 2000 µg/L
worst single sample: 920 µg/L | 59/59 | SYR4 | 2012–2019 |
| Fluoride | 1191 µg/L 30% of the EPA limit 4000 µg/L
worst single sample: 1460 µg/L | 59/59 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 11 µg/L 16% of the EPA limit 70 µg/L
worst single sample: 13 µg/L | 45/143 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 24.84 µg/L 41% of the EPA limit 60 µg/L
worst single sample: 90.2 µg/L | 39/94 | SYR4 | 2012–2019 |
| 1,1,1-Trichloroethane | 4.675 µg/L 2.3% of the EPA limit 200 µg/L
worst single sample: 9.5 µg/L | 36/143 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 3720 µg/L 37% of the EPA limit 10000 µg/L
worst single sample: 4300 µg/L | 29/43 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 5.108 µg/L No EPA limit set
worst single sample: 9 µg/L | 29/94 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 2.195 µg/L 44% of the EPA limit 5 µg/L
worst single sample: 2.4 µg/L | 28/144 | SYR4 | 2012–2019 |
| Lead | 0.0073 mg/L 49% of the EPA limit 0.0150 mg/L | 19/19 | LCR | 2026 |
| Arsenic | 7.03 µg/L 70% of the EPA limit 10 µg/L
worst single sample: 8.9 µg/L | 18/60 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 10.2375 µg/L No EPA limit set
worst single sample: 15 µg/L | 16/94 | SYR4 | 2012–2019 |
| trans-1,2-Dichloroethylene | 1.145 µg/L 1.1% of the EPA limit 100 µg/L
worst single sample: 1.3 µg/L | 11/133 | SYR4 | 2012–2019 |
| Bromoform | 1.965 µg/L No EPA limit set
worst single sample: 2.1 µg/L | 10/94 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 68.65 µg/L No EPA limit set
worst single sample: 81.5 µg/L | 6/94 | SYR4 | 2012–2019 |
| Selenium | 2.77 µg/L 5.5% of the EPA limit 50 µg/L
worst single sample: 2.8 µg/L | 3/59 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 1.395 µg/L No EPA limit set
worst single sample: 1.4 µg/L | 2/94 | SYR4 | 2012–2019 |
| Carbon Tetrachloride | 0.8600 µg/L 17% of the EPA limit 5 µg/L | 1/132 | SYR4 | 2012–2019 |
| Chromium | 5.9 µg/L 5.9% of the EPA limit 100 µg/L | 1/59 | SYR4 | 2012–2019 |
79 contaminants tested, none detected
1,1,2-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, TotalChlorobenzeneCyanideCadmiumCarbofuranChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, TotalLithiumO-DichlorobenzeneP-Dichlorobenzene
Utility contact
Frequently asked questions about Rockford
Is Rockford tap water safe to drink?
EPA monitoring detected 29 contaminants in Rockford'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 Rockford's water?
EPA monitoring detected Nitrate, Copper, Lead, TTHM, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Rockford serve?
Rockford reports serving 147,051 people in Illinois, per its EPA record.
Has Rockford had any water quality violations?
The EPA has 282 violations on file for Rockford, of which 245 are health-based (a contaminant limit or required treatment was breached) and 0 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.