Public water system record
Knollcrest Tax District
Serves Knollcrest, Western Connecticut Planning Region, CT · 356 people served
Federal records show 3 health-based violations and 48 monitoring/reporting issues for Knollcrest Tax District in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 3
- Resolved
- 2
- Unresolved
- 1
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 48
Key facts
- Knollcrest Tax District draws water from 6 wells.
- Most recent formal enforcement: compliance order with a penalty by Connecticut, February 2007.
- Record on file since 1997, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 1 lead and 78 unknown out of 96 service lines.
Check whether Knollcrest Tax District 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 | Active | No |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Oct 30, 2023 | Resolved | No |
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Jul 1, 2023 | Resolved | Yes |
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, 2025 | Resolved |
|
Public Notice
OTHER
|
May 3, 2025 | Resolved |
|
Public Notice
OTHER
|
May 3, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Aug 10, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2023 | Resolved |
|
Public Notice
OTHER
|
Oct 2, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2019 | Resolved |
|
Public Notice
OTHER
|
Mar 17, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Chlordane
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
2,4-D
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
LASSO
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Atrazine
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Aldicarb
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Aldicarb sulfone
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Aldicarb sulfoxide
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Picloram
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Simazine
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Diquat
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Dalapon
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Endrin
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Oct 10, 2016 | Resolved |
Full record since 1997
EPA's records for Knollcrest Tax District go back to 1997. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 15 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 0 |
| 2000s | 0 | 13 |
| 2010 to October 18, 2016 | 0 | 2 |
| October 19, 2016 to 2019 | 0 | 37 |
| 2020s | 3 | 10 |
Most recent health-based violation before October 19, 2016: Total Coliform, began September 1997, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1997 | Resolved |
Enforcement actions
Connecticut regulators took 1 formal enforcement action against Knollcrest Tax District in 2007. The most recent was a compliance order with a penalty in February 2007.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 27, 2007 | Connecticut | Compliance order with a penalty | 2 violations: Consumer Confidence Rule |
What the violations mean
Revised Total Coliform Rule
2 incidentsThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
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
Knollcrest Tax District draws water from 6 wells.
Annual water quality report
Knollcrest Tax District 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 Knollcrest Tax District 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 Connecticut.
Certified drinking water labs by state EPA guidance for private wells