Public water system record
King County Water District No 90
Serves East Renton Highlands and Renton, King County, WA · 20,100 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for King County Water District No 90 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
- 2
Key facts
- King County Water District No 90 draws water from 3 wells.
- Record on file since 1991, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 323 unknown out of 8,198 service lines.
Check whether King County Water District No 90 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 |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
Full record since 1991
EPA's records for King County Water District No 90 go back to 1991. Before October 19, 2016 they list 2 health-based violations (2 archived by EPA without a recorded fix) and 43 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 1 |
| 2000s | 0 | 42 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 1992, Archived.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1992 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1991 | Archived |
Where the water comes from
King County Water District No 90 draws water from 3 wells. It also buys water from Seattle Public Utilities.
Buys water from
- Seattle Public Utilities Seattle, WA
Annual water quality report
King County Water District No 90 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 Washington.
Certified drinking water labs by state EPA guidance for private wells