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.
27
health-based violations
70
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2018-04-01 → 2018-06-30 |
| MCL | Health-based | Resolved | 2018-01-01 → 2018-03-31 |
| MCL | Health-based | Resolved | 2018-01-01 → 2018-03-31 |
| MCL | Health-based | Resolved | 2018-01-01 → 2018-03-31 |
| MCL | Health-based | Resolved | 2018-01-01 → 2018-03-31 |
| MCL | Health-based | Resolved | 2017-10-01 → 2017-12-31 |
| MCL | Health-based | Resolved | 2017-07-01 → 2017-09-30 |
| MCL | Health-based | Resolved | 2006-07-01 → 2006-07-31 |
| MCL | Health-based | Resolved | 2005-11-01 → 2005-11-30 |
| MCL | Health-based | Resolved | 2005-11-01 → 2005-11-30 |
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 |
|---|---|---|---|---|
| Nitrate | 6170 µg/L 62% of the EPA limit 10000 µg/L
worst single sample: 7870 µg/L | 250/250 | SYR4 | 2012–2019 |
| TTHM | 95.595 µg/L 119% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 136.6 µg/L | 130/130 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 63.9 µg/L 107% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 116.3 µg/L | 121/128 | SYR4 | 2012–2019 |
| Chloroform | 77.89 µg/L No EPA limit set
worst single sample: 105 µg/L | 78/88 | SYR4 | 2012–2019 |
| Dibromochloromethane | 3.4 µg/L No EPA limit set
worst single sample: 4.2 µg/L | 71/89 | SYR4 | 2012–2019 |
| Bromodichloromethane | 15.33 µg/L No EPA limit set
worst single sample: 16.9 µg/L | 70/88 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 37.24 µg/L No EPA limit set
worst single sample: 59 µg/L | 53/60 | SYR4 | 2012–2015 |
| Trichloroacetic Acid | 26.135 µg/L No EPA limit set
worst single sample: 30.5 µg/L | 48/60 | SYR4 | 2012–2015 |
| Barium | 85.8 µg/L 4.3% of the EPA limit 2000 µg/L
worst single sample: 92 µg/L | 33/37 | SYR4 | 2012–2019 |
| Fluoride | 724 µg/L 18% of the EPA limit 4000 µg/L
worst single sample: 1020 µg/L | 25/38 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2024 |
| Chromium | 10.4 µg/L 10% of the EPA limit 100 µg/L
worst single sample: 11 µg/L | 13/37 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 6.92 µg/L No EPA limit set
worst single sample: 7 µg/L | 9/60 | SYR4 | 2012–2015 |
| Di(2-ethylhexyl) Phthalate | 2.602 µg/L 43% of the EPA limit 6 µg/L
worst single sample: 2.71 µg/L | 7/41 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 6877.5 µg/L 69% of the EPA limit 10000 µg/L
worst single sample: 7580 µg/L | 6/6 | SYR4 | 2016–2019 |
| Selenium | 20 µg/L 40% of the EPA limit 50 µg/L
worst single sample: 21 µg/L | 6/37 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.68 pCi/L 34% of the EPA limit 5 pCi/L
worst single sample: 1.8 pCi/L | 4/9 | SYR4 | 2015–2019 |
| Gross Alpha, Excl. Radon And U | 2.895 pCi/L 19% of the EPA limit 15 pCi/L
worst single sample: 3 pCi/L | 4/14 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 5.76 pCi/L No EPA limit set
worst single sample: 6 pCi/L | 4/11 | SYR4 | 2012–2019 |
| Atrazine | 0.4620 µg/L 15% of the EPA limit 3 µg/L
worst single sample: 0.4800 µg/L | 3/42 | SYR4 | 2012–2019 |
| Bromoform | 1.49 µg/L No EPA limit set
worst single sample: 1.6 µg/L | 3/85 | SYR4 | 2012–2018 |
| Cadmium | 3.75 µg/L 75% of the EPA limit 5 µg/L
worst single sample: 3.9 µg/L | 3/37 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.27 µg/L No EPA limit set
worst single sample: 2.4 µg/L | 3/60 | SYR4 | 2012–2015 |
| Arsenic | 5.455 µg/L 55% of the EPA limit 10 µg/L
worst single sample: 5.5 µg/L | 2/38 | SYR4 | 2012–2019 |
75 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, TotalChlorobenzeneCopperCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfdaPfdoaPfeesaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about City of Westminster
Is City of Westminster tap water safe to drink?
EPA monitoring detected 32 contaminants in City of Westminster'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 City of Westminster's water?
EPA monitoring detected Nitrate, TTHM, Total Haloacetic Acids (HAA5), Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does City of Westminster serve?
City of Westminster reports serving 35,256 people in Maryland, per its EPA record.
Has City of Westminster had any water quality violations?
The EPA has 70 violations on file for City of Westminster, of which 27 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.