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.
18
health-based violations
114
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| 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 |
| TT | Health-based | Resolved | 1993-07-01 |
| TT | Health-based | Resolved | 1993-07-01 |
| TT | Health-based | Resolved | 1993-07-01 |
| TT | Health-based | Resolved | 1993-07-01 |
| TT | Health-based | Resolved | 1993-07-01 |
| TT | Health-based | Resolved | 1993-07-01 |
| TT | Health-based | Resolved | 1993-07-01 |
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 | 363.4 µg/L 28% of the EPA limit 1300 µg/L
worst single sample: 972 µg/L | 453/509 | SYR4 | 2012–2019 |
| Bromodichloromethane | 13 µg/L No EPA limit set
worst single sample: 18 µg/L | 388/452 | SYR4 | 2012–2019 |
| Chloroform | 58.65 µg/L No EPA limit set
worst single sample: 98 µg/L | 388/452 | SYR4 | 2012–2019 |
| Dibromochloromethane | 4.5 µg/L No EPA limit set
worst single sample: 7.2 µg/L | 349/452 | SYR4 | 2012–2019 |
| TTHM | 72.225 µg/L 90% of the EPA limit 80 µg/L
worst single sample: 110.3 µg/L | 346/349 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 50 µg/L 83% of the EPA limit 60 µg/L
worst single sample: 88 µg/L | 344/349 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 27 µg/L No EPA limit set
worst single sample: 59 µg/L | 343/349 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 21 µg/L No EPA limit set
worst single sample: 29 µg/L | 341/349 | SYR4 | 2012–2019 |
| Barium | 520.55 µg/L 26% of the EPA limit 2000 µg/L
worst single sample: 664 µg/L | 124/124 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 120/120 | LCR | 2026 |
| Nitrate | 3406 µg/L 34% of the EPA limit 10000 µg/L
worst single sample: 3970 µg/L | 114/152 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 3516 µg/L 35% of the EPA limit 10000 µg/L
worst single sample: 4120 µg/L | 99/146 | SYR4 | 2012–2019 |
| Lead | 6.625 µg/L 44% of the EPA limit 15 µg/L
worst single sample: 16 µg/L | 66/509 | SYR4 | 2012–2019 |
| Fluoride | 986.5 µg/L 25% of the EPA limit 4000 µg/L
worst single sample: 1140 µg/L | 48/131 | SYR4 | 2012–2019 |
| Bromoform | 0.9920 µg/L No EPA limit set
worst single sample: 2.9 µg/L | 39/452 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.5 µg/L No EPA limit set | 26/349 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 3.925 µg/L No EPA limit set
worst single sample: 5.1 µg/L | 26/349 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.61 pCi/L 32% of the EPA limit 5 pCi/L
worst single sample: 1.7 pCi/L | 7/17 | SYR4 | 2014–2019 |
| Arsenic | 5.5 µg/L 55% of the EPA limit 10 µg/L
worst single sample: 6 µg/L | 3/124 | SYR4 | 2012–2019 |
| Chromium | 1.9 µg/L 1.9% of the EPA limit 100 µg/L
worst single sample: 2 µg/L | 3/124 | SYR4 | 2012–2019 |
| Nitrite | 12.85 µg/L 1.3% of the EPA limit 1000 µg/L
worst single sample: 13 µg/L | 2/76 | SYR4 | 2012–2019 |
| Cyanide | 5 µg/L 2.5% of the EPA limit 200 µg/L | 1/124 | SYR4 | 2012–2019 |
| Combined Uranium | 2 µg/L 6.7% of the EPA limit 30 µg/L | 1/17 | SYR4 | 2014–2019 |
| Monobromoacetic Acid | 4.5 µg/L No EPA limit set | 1/349 | SYR4 | 2012–2019 |
| Selenium | 1 µg/L 2% of the EPA limit 50 µg/L | 1/124 | SYR4 | 2012–2019 |
| Trichloroethylene | 0.5400 µg/L 11% of the EPA limit 5 µg/L | 1/131 | SYR4 | 2012–2019 |
77 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Meriden Water Division
Is Meriden Water Division tap water safe to drink?
EPA monitoring detected 33 contaminants in Meriden Water Division'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 Meriden Water Division's water?
EPA monitoring detected Copper, Bromodichloromethane, Chloroform, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.
How many people does Meriden Water Division serve?
Meriden Water Division reports serving 58,441 people in Connecticut, per its EPA record.
Has Meriden Water Division had any water quality violations?
The EPA has 114 violations on file for Meriden Water Division, of which 18 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.