What was found in Gardner'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 |
|---|---|---|---|
| Fluoride | 1405 µg/L 35% of the EPA limit 4000 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 1/2 | SYR4 |
| Nitrate | 772.5 µg/L 7.7% of the EPA limit 10000 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 1/2 | SYR4 |
| Copper | 191.5 µg/L 15% of the EPA limit 1300 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 483.5 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2017 | 2/2 | SYR4 |
| Barium | 74.9 µg/L 3.7% of the EPA limit 2000 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 1/2 | SYR4 |
| TTHM | 42 µg/L 53% of the EPA limit 80 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 57.55 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2019 | 2/2 | SYR4 |
| Lithium | 41.1 µg/L No EPA limit set Highest in the city: JOHNSON CO RWD 7 · 6,457 people · 2025 | 1/2 | UCMR-5 |
| Chloroform | 24 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 31 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 24 µg/L 40% of the EPA limit 60 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 26 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 15 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 17 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 14 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 8.065 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 11.55 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 8.4 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 2/2 | SYR4 |
| Lead | 2.75 µg/L 18% of the EPA limit 15 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 7.35 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2017 | 2/2 | SYR4 |
| Dibromoacetic Acid | 2.305 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 5.13 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 4.3 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 2/2 | SYR4 |
| Bromoform | 1.078 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 4.215 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.54 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2019
Highest in the city: 2.22 µg/L — JOHNSON CO RWD 7 · 6,457 people · 2019 | 2/2 | SYR4 |
| Chromium | 1.865 µg/L 1.9% of the EPA limit 100 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 1/2 | SYR4 |
| Atrazine | 1.46 µg/L 49% of the EPA limit 3 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 1/2 | SYR4 |
| Selenium | 1.195 µg/L 2.4% of the EPA limit 50 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 1/2 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0071 µg/L No EPA limit set Highest in the city: JOHNSON CO RWD 7 · 6,457 people · 2025 | 1/2 | UCMR-5 |
| Pfpea | 0.0034 µg/L No EPA limit set Main supplier: GARDNER, CITY OF · 23,942 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0031 mg/L 21% of the EPA limit 0.0150 mg/L Main supplier: GARDNER, CITY OF · 23,942 people · 2023 | 2/2 | LCR |
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 Gardner
| Supplier | Population served |
|---|---|
| GARDNER, CITY OF | 23,942 |
| JOHNSON CO RWD 7 | 6,457 |
Frequently asked questions about Gardner tap water
Is Gardner tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Gardner. 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 Gardner?
2 public water suppliers report drinking-water monitoring for Gardner, Kansas to the EPA. Each is listed above with its population served.
What contaminants are in Gardner's water?
The contaminants EPA monitoring detected in Gardner include Fluoride, Nitrate, Copper, Barium, TTHM. 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.