Public water system record
Selby
Serves Selby, Walworth County, SD · 645 people served
Federal records show 2 health-based violations and 7 monitoring/reporting issues for Selby 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
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 7
Key facts
- Selby buys its water from Web Water Development Association.
- Most recent formal enforcement: compliance order (no penalty) by South Dakota, December 2018.
- Record on file since 1976, with 4 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 399 service lines.
Check whether Selby 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 | Feb 12, 2019 | Resolved | No |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Nov 15, 2015 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Aug 1, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Aug 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
Full record since 1976
EPA's records for Selby go back to 1976. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 19 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 2 |
| 1990s | 0 | 6 |
| 2000s | 0 | 3 |
| 2010 to October 18, 2016 | 4 | 8 |
| October 19, 2016 to 2019 | 1 | 3 |
| 2020s | 0 | 4 |
Most recent health-based violation before October 19, 2016: Stage 1 Disinfection Byproducts Rule, began November 2015, Resolved.
Show all 4 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
Nov 15, 2015 | Resolved |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
Feb 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Oct 16, 2013 | Resolved |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
Jun 11, 2013 | Resolved |
Enforcement actions
South Dakota regulators took 1 formal enforcement action against Selby in 2018. The most recent was a compliance order (no penalty) in December 2018.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 7, 2018 | South Dakota | Compliance order (no penalty) | 1 violation (1 health-based): Stage 1 Disinfection Byproducts Rule |
What the violations mean
Long Term 2 Enhanced Surface Water Treatment Rule
1 incidentThe system failed required surface water treatment or filtration standards
Untreated or inadequately treated surface water can contain bacteria and viruses
Stage 1 Disinfection Byproducts Rule
1 incidentThe system did not meet a treatment requirement of the Stage 1 Disinfectants and Disinfection Byproducts Rule
Byproducts form when disinfectants react with natural material in water. Long-term exposure above federal limits may increase cancer risk
Where the water comes from
Selby buys its water from Web Water Development Association. It lists no wells or intakes of its own.
Buys water from
- Web Water Development Association Aberdeen, SD
Annual water quality report
Selby 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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 South Dakota.
Certified drinking water labs by state EPA guidance for private wells