Public water system record
Walla Walla Water Division
Serves Walla Walla, Walla Walla County, WA · 42,959 people served
Federal records show 39 health-based violations and 31 monitoring/reporting issues for Walla Walla Water Division in the last ten years. The most serious issue in this window was a resolved Long Term 2 Enhanced Surface Water Treatment Rule violation.
System profile
- Health-based violations, last 10 years
- 39
- Resolved
- 39
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 31
Key facts
- Walla Walla Water Division draws water from 9 wells and 1 surface water intake (9 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by Washington, May 2020.
- Record on file since 1979, with 15 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 11,561 service lines.
Check whether Walla Walla Water Division 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Dec 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Nov 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2018 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2018 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Dec 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Nov 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Dec 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Nov 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2016 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Dec 1, 2015 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Nov 1, 2015 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2015 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Picloram
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Dalapon
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Picloram
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Picloram
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Dalapon
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Nitrite
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
Full record since 1979
EPA's records for Walla Walla Water Division go back to 1979. Before October 19, 2016 they list 15 health-based violations (13 resolved, 2 archived by EPA without a recorded fix) and 33 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 9 |
| 1990s | 2 | 5 |
| 2000s | 0 | 6 |
| 2010 to October 18, 2016 | 13 | 13 |
| October 19, 2016 to 2019 | 26 | 0 |
| 2020s | 0 | 18 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began October 2016, Resolved.
Show all 15 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2015 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2015 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1995 | Archived |
Enforcement actions
Washington regulators took 2 formal enforcement actions against Walla Walla Water Division between 1995 and 2020. The most recent was a compliance order (no penalty) in May 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 19, 2020 | Washington | Compliance order (no penalty) | 39 violations (39 health-based): Surface Water Treatment Rule, Long Term 2 Enhanced Surface Water Treatment Rule |
| Mar 24, 1995 | Washington | Compliance order (no penalty) | 3 violations: Lead and Copper Rule, Total Coliform |
What the violations mean
Surface Water Treatment Rule
27 incidentsThe system did not complete a treatment step or action that the Surface Water Treatment Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Long Term 2 Enhanced Surface Water Treatment Rule
12 incidentsThe system failed required surface water treatment or filtration standards
Untreated or inadequately treated surface water can contain bacteria and viruses
Where the water comes from
Walla Walla Water Division draws water from 9 wells and 1 surface water intake (9 of them for emergency, seasonal or other part-time use). It also has an emergency connection to Walla Walla Airport. 5 other public water systems have emergency, seasonal or other part-time connections to Walla Walla Water Division.
Emergency or part-time connections to
- Walla Walla Airport Walla Walla, WA
Annual water quality report
Walla Walla Water Division 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