What was found in Lakewood's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 530 µg/L 5.3% of the EPA limit 10000 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 9600 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 3/15 | SYR4 |
| Fluoride | 483.65 µg/L 12% of the EPA limit 4000 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 1493 µg/L — SHERIDAN MHP · 480 people · 2018 | 5/15 | SYR4 |
| Chlorite | 560 µg/L 56% of the EPA limit 1000 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019 | 1/15 | SYR4 |
| Nitrate-Nitrite | 530 µg/L 5.3% of the EPA limit 10000 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2013 | 2/15 | SYR4 |
| Barium | 45.65 µg/L 2.3% of the EPA limit 2000 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 249.5 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 5/15 | SYR4 |
| TTHM | 48.12 µg/L 60% of the EPA limit 80 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 91.07 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 6/15 | SYR4 |
| Dibromochloromethane | 9.035 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 38.6 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 6/15 | SYR4 |
| Total Haloacetic Acids (HAA5) | 17.085 µg/L 28% of the EPA limit 60 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 32.78 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 6/15 | SYR4 |
| Bromodichloromethane | 9.235 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 29.7 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 6/15 | SYR4 |
| Lithium | 18.7 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2024 | 1/15 | UCMR-5 |
| Chloroform | 7.9 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 15.1 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 4/15 | SYR4 |
| Bromoform | 2.679 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 14.27 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 5/15 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.8 pCi/L 25% of the EPA limit 15 pCi/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 12.0979 pCi/L — INDIAN HILLS WD · 1,300 people · 2018 | 4/15 | SYR4 |
| Dibromoacetic Acid | 3.444 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 12.07 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 3/15 | SYR4 |
| Dichloroacetic Acid | 5.715 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 11.545 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 3/15 | SYR4 |
| Monobromoacetic Acid | 8.0345 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019 | 2/15 | SYR4 |
| Trichloroacetic Acid | 2.075 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 7.335 µg/L — INDIAN HILLS WD · 1,300 people · 2019 | 3/15 | SYR4 |
| Combined Uranium | 0.8642 µg/L 2.9% of the EPA limit 30 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019
Highest in the city: 5.5 µg/L — INDIAN HILLS WD · 1,300 people · 2018 | 2/15 | SYR4 |
| Selenium | 4.515 µg/L 9% of the EPA limit 50 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019 | 2/15 | SYR4 |
| Monochloroacetic Acid | 4.073 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019 | 2/15 | SYR4 |
| Chromium | 2.85 µg/L 2.9% of the EPA limit 100 µg/L Highest in the city: INDIAN HILLS WD · 1,300 people · 2019 | 1/15 | SYR4 |
| Gross Beta Particle Activity | 2.3 pCi/L No EPA limit set Highest in the city: INDIAN HILLS WD · 1,300 people · 2016 | 1/15 | SYR4 |
| Combined Radium (-226 And -228) | 2.21 pCi/L 44% of the EPA limit 5 pCi/L Highest in the city: INDIAN HILLS WD · 1,300 people · 2018 | 3/15 | SYR4 |
| Thallium, Total | 1.7 µg/L 85% of the EPA limit 2 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019 | 1/15 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Highest in the city: INDIAN HILLS WD · 1,300 people · 2019 | 1/15 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.8200 µg/L 14% of the EPA limit 6 µg/L Highest in the city: INDIAN HILLS WD · 1,300 people · 2019 | 1/15 | SYR4 |
| Antimony, Total | 0.7500 µg/L 13% of the EPA limit 6 µg/L Highest in the city: INDIAN HILLS WD · 1,300 people · 2019 | 1/15 | SYR4 |
| Pentachlorophenol | 0.4000 µg/L 40% of the EPA limit 1 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019 | 2/15 | SYR4 |
| Cadmium | 0.2335 µg/L 4.7% of the EPA limit 5 µg/L Highest in the city: INDIAN HILLS WD · 1,300 people · 2019 | 1/15 | SYR4 |
| 2,4-D | 0.1890 µg/L 0.3% of the EPA limit 70 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019 | 1/15 | SYR4 |
| Mercury | 0.0610 µg/L 3.1% of the EPA limit 2 µg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2019 | 1/15 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2025
Highest in the city: 0.0090 mg/L — ALAMEDA WSD · 2,480 people · 2002 | 15/15 | LCR |
| PFBS | 0.0040 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2024 | 1/15 | UCMR-5 |
| Pfhxa | 0.0038 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2024 | 1/15 | UCMR-5 |
| Pfpea | 0.0035 µg/L No EPA limit set Main supplier: CONSOLIDATED MUTUAL MAPLE GROVE · 81,400 people · 2024 | 1/15 | UCMR-5 |
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 the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Lakewood
| Supplier | Population served |
|---|---|
| CONSOLIDATED MUTUAL MAPLE GROVE | 81,400 |
| GREEN MOUNTAIN WSD | 49,400 |
| BANCROFT CLOVER WSD | 44,000 |
| BEAR CREEK WSD | 30,000 |
| WILLOWBROOK WSD | 9,348 |
| LAKEWOOD CITY OF | 6,000 |
| MEADOWBROOK WD | 3,290 |
| ALAMEDA WSD | 2,480 |
| INDIAN HILLS WD | 1,300 |
| SHERIDAN MHP | 480 |
| MOUNTAINSIDE ESTATES MHP | 473 |
| BONVUE WATER AND SANITATION DISTRICT | 350 |
| INSPIRATION VALLEY MHP | 250 |
| ELEVADO ESTATES LLC | 250 |
| MAJESTIC MHP | 232 |
Frequently asked questions about Lakewood tap water
Is Lakewood tap water safe to drink?
EPA testing detected 35 contaminants in the water serving Lakewood. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Lakewood?
15 public water suppliers report drinking-water monitoring for Lakewood, Colorado to the EPA. Each is listed above with its population served.
What contaminants are in Lakewood's water?
The contaminants EPA monitoring detected in Lakewood include Nitrate, Fluoride, Chlorite, Nitrate-Nitrite, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
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.