Public water system record
Knoll Terrace MHP
Serves Henderson, Vance County, NC · 254 people served
Federal records show 1 health-based violation and 50 monitoring/reporting issues for Knoll Terrace MHP in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 50
Key facts
- Knoll Terrace MHP draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by North Carolina, April 2025.
- Record on file since 1986, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 5 unknown out of 5 service lines.
Check whether Knoll Terrace MHP 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 1, 2024 |
Active
Enforcement action in place
|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
May 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
May 1, 2023 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Feb 11, 2023 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Public Notice
OTHER
|
Nov 13, 2022 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Nov 1, 2021 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Nov 1, 2021 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Aug 1, 2021 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Aug 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Jan 31, 2021 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
|
Public Notice
OTHER
|
Feb 16, 2018 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
Full record since 1986
EPA's records for Knoll Terrace MHP go back to 1986. Before October 19, 2016 they list 5 health-based violations (3 resolved, 2 archived by EPA without a recorded fix) and 105 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 2 |
| 1990s | 5 | 35 |
| 2000s | 0 | 60 |
| 2010 to October 18, 2016 | 0 | 8 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 1 | 46 |
Most recent health-based violation before October 19, 2016: Lead and Copper Rule, began January 1994, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Treatment technique failure
|
Jan 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1991 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1991 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 21, 1991 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 21, 1991 | Resolved |
Enforcement actions
North Carolina regulators took 19 formal enforcement actions against Knoll Terrace MHP between 2013 and 2025, filed as 20 records in EPA's data. The most recent was a compliance order (no penalty) in April 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 4, 2025 | North Carolina | Compliance order (no penalty) | 1 violation: Nitrate |
| May 10, 2024 | North Carolina | Compliance order (no penalty) | 1 violation: Public Notice |
| Aug 21, 2023 | North Carolina | Compliance order (no penalty) | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Aug 17, 2023 | North Carolina | Compliance order (no penalty) | 21 violations: 1,1-Dichloroethylene, trans-1,2-Dichloroethylene, 1,2-Dichloroethane, Benzene, Toluene |
| Mar 1, 2023 | North Carolina | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Feb 22, 2023 | North Carolina | Compliance order (no penalty) | 11 violations: Arsenic, Barium, Nickel, Mercury, Selenium |
| Feb 1, 2023 | North Carolina | Compliance order (no penalty) | 1 violation: Public Notice |
| Mar 30, 2022 | North Carolina | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Feb 14, 2022 | North Carolina | Compliance order (no penalty) | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Nov 12, 2021 | North Carolina | Compliance order (no penalty) | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Jun 14, 2021 | North Carolina | Compliance order (no penalty) | 1 violation: Public Notice |
| Jan 31, 2020 | North Carolina | Compliance order (no penalty) | 1 violation: Combined Radium (-226 and -228) |
| Nov 20, 2018 | North Carolina | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
| Apr 30, 2018 | North Carolina | Compliance order (no penalty) | 1 violation: Public Notice |
| May 25, 2017 | North Carolina | Compliance order with a penalty | 1 violation: Gross Alpha, Excl. Radon and U |
| Feb 15, 2017 | North Carolina | Compliance order (no penalty) | 1 violation: Gross Alpha, Excl. Radon and U |
| Oct 19, 2016 | North Carolina | Compliance order (no penalty) | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Jun 27, 2016 | North Carolina | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Apr 30, 2013 | North Carolina | Compliance order (no penalty) | 2 violations: Nitrate |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Knoll Terrace MHP draws water from 2 wells.
Annual water quality report
Knoll Terrace MHP 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Knoll Terrace MHP for a copy.
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 North Carolina.
Certified drinking water labs by state EPA guidance for private wells