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.
12
health-based violations
35
violations on file
3
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2025-07-02 |
| TT | Health-based | Resolved | 2025-07-02 |
| TT | Health-based | Resolved | 2025-07-02 |
| TT | Health-based | Resolved | 2000-07-01 → 2000-09-30 |
| MCL | Health-based | Resolved | 1999-01-01 → 1999-03-31 |
| MCL | Health-based | Resolved | 1999-01-01 → 1999-03-31 |
| MCL | Health-based | Resolved | 1999-01-01 → 1999-03-31 |
| MCL | Health-based | Resolved | 1998-10-01 → 1998-12-31 |
| MCL | Health-based | Resolved | 1998-07-01 → 1998-09-30 |
| MCL | Health-based | Resolved | 1998-07-01 → 1998-09-30 |
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 |
|---|---|---|---|---|
| Copper | 2500 µg/L 192% of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 4200 µg/L | 511/511 | SYR4 | 2014–2019 |
| Lead | 10.9 µg/L 73% of the EPA limit 15 µg/L
worst single sample: 520 µg/L | 303/511 | SYR4 | 2014–2019 |
| Nitrate | 780 µg/L 7.8% of the EPA limit 10000 µg/L
worst single sample: 960 µg/L | 92/126 | SYR4 | 2012–2019 |
| Lead | 0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L | 42/42 | LCR | 2026 |
| Barium | 1915 µg/L 96% of the EPA limit 2000 µg/L
worst single sample: 5500 µg/L | 38/38 | SYR4 | 2012–2019 |
| Bromodichloromethane | 16.668 µg/L No EPA limit set
worst single sample: 17 µg/L | 28/28 | SYR4 | 2012–2019 |
| Chloroform | 16.145 µg/L No EPA limit set
worst single sample: 22.33 µg/L | 28/28 | SYR4 | 2012–2019 |
| Dibromochloromethane | 11.804 µg/L No EPA limit set
worst single sample: 13.8 µg/L | 28/28 | SYR4 | 2012–2019 |
| TTHM | 46.65 µg/L 58% of the EPA limit 80 µg/L
worst single sample: 52.89 µg/L | 28/28 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 2.4585 pCi/L 49% of the EPA limit 5 pCi/L
worst single sample: 2.58 pCi/L | 24/24 | SYR4 | 2012–2019 |
| Bromoform | 4.0183 µg/L No EPA limit set
worst single sample: 4.47 µg/L | 22/28 | SYR4 | 2012–2019 |
| Fluoride | 1227.5 µg/L 31% of the EPA limit 4000 µg/L
worst single sample: 1260 µg/L | 22/24 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 1.7 µg/L 34% of the EPA limit 5 µg/L
worst single sample: 2.2 µg/L | 21/58 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 19.96 µg/L 33% of the EPA limit 60 µg/L
worst single sample: 24.2 µg/L | 17/28 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 3.575 µg/L No EPA limit set
worst single sample: 3.8 µg/L | 16/28 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 13.7825 µg/L No EPA limit set
worst single sample: 16.6 µg/L | 8/28 | SYR4 | 2012–2019 |
| Arsenic | 1.775 µg/L 18% of the EPA limit 10 µg/L
worst single sample: 1.8 µg/L | 6/24 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 7.575 µg/L No EPA limit set
worst single sample: 7.6 µg/L | 6/28 | SYR4 | 2012–2019 |
| Lithium | 19.1 µg/L No EPA limit set | 6/16 | UCMR-5 | 2025 |
| Nitrate-Nitrite | 539 µg/L 5.4% of the EPA limit 10000 µg/L
worst single sample: 550 µg/L | 3/5 | SYR4 | 2012–2018 |
| Carbon Tetrachloride | 0.5900 µg/L 12% of the EPA limit 5 µg/L | 1/58 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 1.25 µg/L No EPA limit set | 1/28 | SYR4 | 2012–2019 |
| Selenium | 2.3 µg/L 4.6% of the EPA limit 50 µg/L | 1/24 | SYR4 | 2012–2019 |
80 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, TotalChlorobenzeneCyanideCadmiumCarbofuranChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about South Elgin
Is South Elgin tap water safe to drink?
EPA monitoring detected 28 contaminants in South Elgin'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 South Elgin's water?
EPA monitoring detected Copper, Lead, Nitrate, Lead, Barium, and others. The full list with the level and data source for each is above.
How many people does South Elgin serve?
South Elgin reports serving 23,648 people in Illinois, per its EPA record.
Has South Elgin had any water quality violations?
The EPA has 35 violations on file for South Elgin, of which 12 are health-based (a contaminant limit or required treatment was breached) and 3 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.