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.
123
health-based violations
170
violations on file
1
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2024-07-01 → 2024-09-30 |
| MCL | Health-based | Resolved | 2024-07-01 → 2024-09-30 |
| MCL | Health-based | Resolved | 2024-07-01 → 2024-09-30 |
| MCL | Health-based | Resolved | 2024-07-01 → 2024-09-30 |
| MCL | Health-based | Resolved | 2024-07-01 → 2024-09-30 |
| MCL | Health-based | Resolved | 2024-07-01 → 2024-09-30 |
| MCL | Health-based | Resolved | 2024-04-01 → 2024-06-30 |
| MCL | Health-based | Resolved | 2024-04-01 → 2024-06-30 |
| MCL | Health-based | Resolved | 2024-04-01 → 2024-06-30 |
| MCL | Health-based | Resolved | 2024-04-01 → 2024-06-30 |
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 | 4500 µg/L 45% of the EPA limit 10000 µg/L
worst single sample: 7500 µg/L | 370/370 | SYR4 | 2012–2019 |
| Bromodichloromethane | 27 µg/L No EPA limit set
worst single sample: 51 µg/L | 132/132 | SYR4 | 2012–2019 |
| Chloroform | 25.89 µg/L No EPA limit set
worst single sample: 56 µg/L | 132/132 | SYR4 | 2012–2019 |
| TTHM | 105.045 µg/L 131% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 168 µg/L | 132/132 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 27.67 µg/L 46% of the EPA limit 60 µg/L
worst single sample: 40 µg/L | 132/132 | SYR4 | 2012–2019 |
| Bromoform | 21.25 µg/L No EPA limit set
worst single sample: 49 µg/L | 131/132 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 11 µg/L No EPA limit set
worst single sample: 15 µg/L | 131/132 | SYR4 | 2012–2019 |
| Dibromochloromethane | 43.85 µg/L No EPA limit set
worst single sample: 67 µg/L | 131/132 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 11.125 µg/L No EPA limit set
worst single sample: 16 µg/L | 108/132 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 13.95 µg/L No EPA limit set
worst single sample: 22 µg/L | 92/132 | SYR4 | 2012–2019 |
| Copper | 110.5 µg/L 8.5% of the EPA limit 1300 µg/L
worst single sample: 160 µg/L | 60/60 | SYR4 | 2014–2017 |
| Monobromoacetic Acid | 5.192 µg/L No EPA limit set
worst single sample: 5.47 µg/L | 29/132 | SYR4 | 2012–2019 |
| Lead | 0.0043 mg/L 29% of the EPA limit 0.0150 mg/L | 19/19 | LCR | 2025 |
| Barium | 22.6 µg/L 1.1% of the EPA limit 2000 µg/L
worst single sample: 23 µg/L | 9/9 | SYR4 | 2012–2019 |
| Fluoride | 1914 µg/L 48% of the EPA limit 4000 µg/L
worst single sample: 2510 µg/L | 9/9 | SYR4 | 2012–2019 |
| Lead | 339.435 µg/L 2263% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 520 µg/L | 8/60 | SYR4 | 2014–2017 |
| Arsenic | 1.555 µg/L 16% of the EPA limit 10 µg/L
worst single sample: 1.6 µg/L | 4/9 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 16.131 pCi/L 323% of the EPA limit, at the 95th percentile of samples — 5 pCi/L
worst single sample: 18.8 pCi/L | 4/4 | SYR4 | 2012–2019 |
| Lithium | 45.5 µg/L No EPA limit set | 4/4 | UCMR-5 | 2024 |
| Nitrate-Nitrite | 4093 µg/L 41% of the EPA limit 10000 µg/L
worst single sample: 4500 µg/L | 3/3 | SYR4 | 2012–2018 |
| Selenium | 5.795 µg/L 12% of the EPA limit 50 µg/L
worst single sample: 5.8 µg/L | 2/9 | SYR4 | 2012–2019 |
| Atrazine | 0.3200 µg/L 11% of the EPA limit 3 µg/L | 1/17 | SYR4 | 2012–2019 |
| Chromium | 9.5 µg/L 9.5% of the EPA limit 100 µg/L | 1/9 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 9.8 µg/L No EPA limit set | 1/132 | 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, TotalBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Macomb
Is Macomb tap water safe to drink?
EPA monitoring detected 24 contaminants in Macomb'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 Macomb's water?
EPA monitoring detected Nitrate, Bromodichloromethane, Chloroform, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does Macomb serve?
Macomb reports serving 15,051 people in Illinois, per its EPA record.
Has Macomb had any water quality violations?
The EPA has 170 violations on file for Macomb, of which 123 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.