Drinking water quality
What's in Olathe, KS tap water
23 contaminants were measured in the Olathe, KS water system's most recent annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| HAA5 | 6.5–46.4 ug/LRange | 60 ug/LMCL | Approaching the limit |
| TTHM | 30.9–54.3 ug/LRange | 80 ug/LMCL | Approaching the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chloride | 70 mg/LReported Level | 250 mg/LMCL | Within the limit |
| Fluoride | 0.795 mg/LReported Level | 4 mg/LMCL | Within the limit |
| Sulfate | 76 mg/LReported Level | 250 mg/LMCL | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Barium | 0.072 mg/LReported Level | 2 mg/LMCL | Within the limit |
| Calcium | 43 mg/LReported Level | 200 mg/LMCL | Within the limit |
| Chromium, Total | 2.1 ug/LReported Level | 100 ug/LMCL | Within the limit |
| Copper | 0.338 mg/L90th percentile | 1.3 mg/LAL | Within the limit |
| Lead | 11 ug/L90th percentile | 15 ug/LAL | Approaching the limit |
| Lithium | 20.7 ug/LReported Level | None set | Detected — no federal limit |
| Magnesium | 7.8 mg/LReported Level | 150 mg/LMCL | Within the limit |
| Nickel | 0.0031 mg/LReported Level | 0.1 mg/LMCL | Within the limit |
| Potassium | 7.2 mg/LReported Level | 100 mg/LMCL | Within the limit |
| Selenium | 1.4 ug/LReported Level | 50 ug/LMCL | Within the limit |
| Silica | 8.7 mg/LReported Level | 50 mg/LMCL | Within the limit |
| Sodium | 56 mg/LReported Level | 100 mg/LMCL | Approaching the limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total Coliform | 0.75Reported Level | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Alkalinity | 97 mg/LReported Level | 300 mg/LMCL | Within the limit |
| Hardness | 140 mg/LReported Level | 400 mg/LMCL | Within the limit |
| pH | 8.6Reported Level | 8.5MCL | At or above the limit |
| Specific Conductance | 530Reported Level | 1500MCL | Within the limit |
| Total Dissolved Solids | 340 mg/LReported Level | 500 mg/LMCL | Approaching the limit |
Every figure here is transcribed verbatim from Olathe, KS's annual Consumer Confidence Report, cross-checked by a second model, and approved by a person before publishing. Numbers are the utility's own — a water-quality report covers an entire service area, not a single address.