Drinking water quality · 2024
· Verified
What's in Olathe, KS tap water
10 contaminants were measured in the Olathe, KS water system's 2024 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 10
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Lithium
- Service area
- KS
PFAS — EPA UCMR5 (2023–2025)
1 PFAS compound detected in Olathe, KS
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
Lithium
● Detected (no federal limit)below national p90 (76.59999999999991 mg/L across detecting U.S. systems)
Where your water comes from · EPA SDWIS
Olathe, KS's drinking water comes from ground water, drawn from 18 sources.
Source
- WELL · 17
- HAB RIVER
Treatment
- TP003
Distribution
Historical readings · EPA Six-Year Review (2012–2019)
2 contaminants historically over EPA limits in Olathe, KS
Every U.S. public water system reports compliance-monitoring data to EPA. The Six-Year Review releases the 2012–2019 window as a single dataset — here's what your system reported, year by year. Values shown are the highest detection per analyte per year, compared to the federal MCL.
| Contaminant | Worst detection | EPA limit | Years (2012–2019) |
|---|---|---|---|
HAA5 worst: 2012 | 0.0962 mg/L 1.6× | 0.06 mg/L | '12'13'14'15'16'17'18'19 |
TTHM worst: 2013 | 0.0895 mg/L 1.1× | 0.08 mg/L | '12'13'14'15'16'17'18'19 |
ATRAZINE worst: 2013 | 0.0016 mg/L within above national p90 | 0.003 mg/L | '13'14'15'16'17'18'19 |
FLUORIDE worst: 2019 | 0.94 mg/L within | 4 mg/L | '12'13'14'15'16'17'18'19 |
ARSENIC worst: 2012 | 0.0022 mg/L within below national p90 | 0.01 mg/L | '12'13'14'15'16'17'18'19 |
NITRATE worst: 2017 | 0.81 mg/L within | 10 mg/L | '12'13'14'15'16'17'18'19 |
BARIUM worst: 2018 | 0.098 mg/L within below national p90 | 2 mg/L | '12'13'14'15'16'17'18'19 |
SELENIUM worst: 2012 | 0.0022 mg/L within | 0.05 mg/L | '12'13'14'15'16'17'18'19 |
CHROMIUM worst: 2017 | 0.0027 mg/L within below national p90 | 0.1 mg/L | '12'13'14'15'17'19 |
COPPER worst: 2012 | 0.0039 mg/L below national p90 | — | '12'13'14'15'16'17'18'19 |
LEAD worst: 2014 | 0.018 mg/L | — | '14'17 |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium, TotalTotal chromium — the sum of all chromium forms, from natural deposits and industrial discharge. | 2.1 ug/LHighest single sampleSystem-wide | 100 ug/LMCL | Within the limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0.75Reported levelSystem-wide | None set | Detected — no federal limit |
People also ask about Olathe, KS's water
+Is Olathe, KS tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the Olathe, KS water utility lists 1 contaminant at or above the federal limit: Lithium. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in Olathe, KS tap water?
10 contaminants were measured in Olathe, KS's 2024 Consumer Confidence Report, spanning metals, disinfection byproducts, and inorganic chemicals. 9 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in Olathe, KS tap water?
One contaminant in Olathe, KS's 2024 report sits at or above the federal limit: Lithium (2.3× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in Olathe, KS tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Lithium, at 2.3× the federal threshold. It belongs to the metals family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from Olathe, KS's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Olathe, KS's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.