Monroe Water Quality
Connecticut
According to EPA SDWIS, Monroe, Connecticut is served by 8 community water systems covering about 36,166 people. The same extract lists 18 health-based violation records, most recently coded 5000 in 2021. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Monroe, Connecticut is delivered through 8 EPA-regulated community water systems serving an estimated 36,166 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 18 violation records across the 8 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 4 distinct EPA contaminant codes: Lead and Copper Rule, Arsenic, Groundwater Rule, Combined Radium (-226 and -228). 3 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Connecticut drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| AQUARION WATER/NH | 34,000 | 0 | Clean |
| ROSEBROOK WATER | 1,050 | 3 | Health |
| ABENAKI WATER /LAKELAND | 395 | 0 | Clean |
| ABENAKI WATER/WHITE ROCK WATER | 238 | 10 | Health |
| SUN VALLEY | 200 | 0 | Clean |
| ABENAKI WATER/GILFORD VILLAGE | 190 | 4 | Health |
| ABENAKI WATER/TIOGA BELMONT | 55 | 1 | Health |
| 27 MAPLE DRIVE | 38 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| ROSEBROOK WATER | Lead and Copper Rule | 2021-09-30 |
| ROSEBROOK WATER | Lead and Copper Rule | 2021-09-30 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2021-07-01 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2021-04-01 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2021-01-01 |
| ROSEBROOK WATER | Groundwater Rule | 2020-11-17 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2020-10-01 |
| ABENAKI WATER/GILFORD VILLAGE | Combined Radium (-226 and -228) | 2020-07-01 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2020-07-01 |
| ABENAKI WATER/GILFORD VILLAGE | Combined Radium (-226 and -228) | 2020-04-01 |
| ABENAKI WATER/GILFORD VILLAGE | Combined Radium (-226 and -228) | 2020-01-01 |
| ABENAKI WATER/TIOGA BELMONT | Lead and Copper Rule | 2019-12-15 |
| ABENAKI WATER/GILFORD VILLAGE | Combined Radium (-226 and -228) | 2019-07-01 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2017-07-01 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2017-04-01 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2017-01-01 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2016-10-01 |
| ABENAKI WATER/WHITE ROCK WATER | Arsenic | 2016-07-01 |
What are Monroe's health-based records for?
Monroe's health-based violation records carry 4 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Arsenic | 10 | 1 |
| Combined Radium (-226 and -228) | 4 | 1 |
| Lead and Copper Rule | 3 | 2 |
| Groundwater Rule | 1 | 1 |
TRI Facilities in Monroe
| Facility | Total Releases |
|---|---|
| American Heat Treating Inc | 950 lbs |
| Biomerics Nle LLC | 8 lbs |
| Seymour Sheridan Inc | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Monroe, Connecticut? ▼
How many water violations does Monroe have in this EPA extract? ▼
What contaminants were found in Monroe water? ▼
How many water systems serve Monroe? ▼
Where does Monroe get its drinking water? ▼
Are there pollution sources near Monroe? ▼
How does Monroe compare in Connecticut?
Of the 151 Connecticut places with at least one community water system on file, Monroe ranks #9 by number of systems (8).
Either side of it: Tolland (11), East Hartford (10), East Hampton (7), Enfield (7)
About This Data
Figures here are the current EPA SDWIS extract joined to the 8 community water systems whose service area lists Monroe, ranked against the 151 Connecticut places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.