Public water system record
City of Olathe
Serves Olathe, Johnson County, KS · 143,014 people served
Federal records show no health-based violations and 6 monitoring/reporting issues for City of Olathe in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 6
Key facts
- City of Olathe draws water from 17 wells and 1 surface water intake (2 of them for emergency, seasonal or other part-time use).
- Record on file since 1992, with 5 health-based violations before October 19, 2016.
Check whether City of Olathe serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlorine dioxide
Monitoring and reporting
|
Mar 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Public Notice
OTHER
|
May 13, 2022 | Resolved |
|
Public Notice
OTHER
|
May 13, 2022 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Dec 1, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 1, 2020 | Resolved |
Full record since 1992
EPA's records for City of Olathe go back to 1992. Before October 19, 2016 they list 5 health-based violations (5 resolved) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 1 |
| 2000s | 2 | 6 |
| 2010 to October 18, 2016 | 2 | 0 |
| 2020s | 0 | 6 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began March 2011, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Mar 1, 2011 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Feb 1, 2011 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2002 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1992 | Resolved |
Where the water comes from
City of Olathe draws water from 17 wells and 1 surface water intake (2 of them for emergency, seasonal or other part-time use). 1 other community water system and 1 smaller public system such as schools, businesses or campgrounds buy water from City of Olathe.
Community systems that buy water from it
- Johnson Co RWD 7 Gardner, KS
Annual water quality report
City of Olathe must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Kansas.
Certified drinking water labs by state EPA guidance for private wells