Public water system record
Left Hand WD
Serves an area of Boulder County and Weld County, CO that includes Frederick, Niwot, Altona and 1 more place · 20,280 people served
Federal records show no health-based violations and 3 monitoring/reporting issues for Left Hand WD 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
- 3
Key facts
- Left Hand WD draws water from 4 surface water intakes (2 of them for emergency, seasonal or other part-time use).
- Record on file since 2002, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 7,769 service lines.
Check whether Left Hand WD 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 |
|---|---|---|
|
Turbidity
Monitoring and reporting
|
Nov 1, 2017 | Resolved |
|
Cryptosporidium
Monitoring and reporting
|
Nov 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
Nov 1, 2017 | Resolved |
Full record since 2002
EPA's records for Left Hand WD go back to 2002. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 65 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 63 |
| 2010 to October 18, 2016 | 0 | 2 |
| October 19, 2016 to 2019 | 0 | 3 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began September 2002, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Sep 1, 2002 | Resolved |
Where the water comes from
Left Hand WD draws water from 4 surface water intakes (2 of them for emergency, seasonal or other part-time use). It also buys water from Central Weld Cnty WD and City of Boulder. It also has an emergency connection to City of Longmont. 3 other community water systems buy water from Left Hand WD. 4 other public water systems have emergency connections to Left Hand WD.
Buys water from
- Central Weld Cnty WD Greeley, CO
- City of Boulder Boulder, CO
Emergency or part-time connections to
- City of Longmont Longmont, CO
Community systems that buy water from it
- Lefthand WSD Lake Pines Boulder, CO
- Longview MHP Lakewood, CO
- River Valley MHC Littleton, CO
Annual water quality report
Left Hand WD 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 Colorado.
Certified drinking water labs by state EPA guidance for private wells