Compliance record
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| Pfba | 0.0101 µg/L | 1/2 | 2024 |
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 | 1162 µg/L 89% of the EPA limit 1300 µg/L
worst single sample: 1580 µg/L | 90/90 | SYR4 | 2013–2019 |
| Lead | 4.46 µg/L 30% of the EPA limit 15 µg/L
worst single sample: 6.3 µg/L | 63/90 | SYR4 | 2013–2019 |
| Bromodichloromethane | 6.62 µg/L No EPA limit set
worst single sample: 8.1 µg/L | 33/33 | SYR4 | 2012–2019 |
| Bromoform | 4.02 µg/L No EPA limit set
worst single sample: 7.2 µg/L | 33/33 | SYR4 | 2012–2019 |
| Dibromochloromethane | 7.92 µg/L No EPA limit set
worst single sample: 9.7 µg/L | 33/33 | SYR4 | 2012–2019 |
| Chloroform | 3.845 µg/L No EPA limit set
worst single sample: 4 µg/L | 32/33 | SYR4 | 2012–2019 |
| Fluoride | 1100 µg/L 28% of the EPA limit 4000 µg/L
worst single sample: 1200 µg/L | 32/32 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 3.11 µg/L No EPA limit set
worst single sample: 3.6 µg/L | 30/30 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 1.575 µg/L No EPA limit set
worst single sample: 1.9 µg/L | 14/30 | SYR4 | 2012–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2025 |
| Nitrate-Nitrite | 90 µg/L 0.9% of the EPA limit 10000 µg/L | 6/46 | SYR4 | 2012–2019 |
| Chromium | 0.2670 µg/L 0.3% of the EPA limit 100 µg/L
worst single sample: 0.2700 µg/L | 3/4 | SYR4 | 2014 |
| Trichloroethylene | 0.4430 µg/L 8.9% of the EPA limit 5 µg/L
worst single sample: 0.4700 µg/L | 3/3 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 1.1 µg/L No EPA limit set | 2/30 | SYR4 | 2012–2019 |
| Lithium | 17.8 µg/L No EPA limit set | 2/2 | UCMR-5 | 2024 |
76 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-PF3ONSAdonaAtrazineBhc-GammaBenzeneBenzo(A)PyreneChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneToxapheneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Maple Grove
Is Maple Grove tap water safe to drink?
EPA monitoring detected 16 contaminants in Maple Grove'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 Maple Grove's water?
EPA monitoring detected Copper, Lead, Bromodichloromethane, Bromoform, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does Maple Grove serve?
Maple Grove reports serving 82,000 people in Minnesota, per its EPA record.
Has Maple Grove had any water quality violations?
The EPA has no formal drinking-water violations on file for Maple Grove.
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.