EMERALD LAKE
New Hampshire — Community Water System — PWSID: NH1141020
System Information
| PWSID | NH1141020 |
| System Name | EMERALD LAKE |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 16, 1990 |
| Last Reported | Feb 19, 2026 |
Location & Contact
| State | New Hampshire |
| City | HILLSBORO |
| ZIP Code | 03244 |
| Address | 147 W MAIN ST |
| Organization | EMERALD LAKE VILLAGE DISTRICT |
| Phone | — |
Population & Service
| Population Served | 1,300 |
| Service Connections | 528 |
Drinking Water Violations (179)
This water system has 179 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2024 | Oct 1, 2024 | MR | No | No | — | 0.060 mg/L | — | Resolved | Oct 1, 2024 | — | |
| Jul 1, 2024 | Oct 1, 2024 | MR | No | No | — | 0.060 mg/L | — | Resolved | Oct 1, 2024 | — | |
| Jul 1, 2024 | Oct 1, 2024 | MR | No | No | — | 0.060 mg/L | — | Resolved | Oct 1, 2024 | — | |
| Jul 1, 2024 | Oct 1, 2024 | MR | No | No | — | 0.080 mg/L | — | Resolved | Oct 1, 2024 | — | |
| Jul 1, 2024 | Oct 1, 2024 | MR | No | No | — | 0.080 mg/L | — | Resolved | Oct 1, 2024 | — | |
| Jul 1, 2024 | Oct 1, 2024 | MR | No | No | — | 0.080 mg/L | — | Resolved | Oct 1, 2024 | — | |
| Jul 1, 2024 | Oct 1, 2024 | MR | No | No | — | 0.080 mg/L | — | Resolved | Oct 1, 2024 | — | |
| Jul 1, 2024 | Oct 1, 2024 | MR | No | No | — | 0.060 mg/L | — | Resolved | Oct 1, 2024 | — | |
| Nov 10, 2021 | — | RPT | No | No | — | — | — | Resolved | Dec 7, 2021 | — | |
| Nov 10, 2021 | — | RPT | No | No | — | — | — | Resolved | Dec 7, 2021 | — | |
| Nov 10, 2021 | — | RPT | No | No | — | — | — | Resolved | Dec 7, 2021 | — | |
| Nov 10, 2021 | — | RPT | No | No | — | — | — | Resolved | Dec 7, 2021 | — | |
| Oct 1, 2021 | Nov 1, 2021 | MON | No | Yes | — | — | — | Resolved | Nov 1, 2021 | — | |
| Oct 1, 2021 | Nov 1, 2021 | MON | No | Yes | — | — | — | Resolved | Nov 1, 2021 | — | |
| Oct 1, 2021 | Nov 1, 2021 | MON | No | Yes | — | — | — | Resolved | Nov 1, 2021 | — | |
| Oct 1, 2021 | Nov 1, 2021 | MON | No | Yes | — | — | — | Resolved | Nov 1, 2021 | — | |
| Oct 2, 2020 | — | TT | Yes | No | — | — | — | Unaddressed | — | — | |
| Oct 2, 2020 | — | TT | Yes | No | — | — | — | Unaddressed | — | — | |
| Oct 2, 2020 | — | TT | Yes | No | — | — | — | Unaddressed | — | — | |
| Jan 23, 2020 | — | Other | No | No | — | — | — | Resolved | Feb 7, 2020 | — | |
| Jan 23, 2020 | — | Other | No | No | — | — | — | Resolved | Feb 7, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .013 MG/L | 0.010 mg/L | — | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .013 MG/L | 0.010 mg/L | — | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .013 MG/L | 0.010 mg/L | — | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .013 MG/L | 0.010 mg/L | — | Resolved | Mar 31, 2020 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .023 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .023 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .023 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .023 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .023 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .023 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .023 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .023 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Apr 1, 2019 | Jun 30, 2019 | MCL | Yes | No | .015 MG/L | 0.010 mg/L | — | Resolved | Jun 30, 2019 | — | |
| Sep 15, 2016 | — | MR | No | Yes | — | — | — | Resolved | Sep 30, 2016 | — | |
| Sep 15, 2016 | — | MR | No | Yes | — | — | — | Resolved | Sep 30, 2016 | — | |
| Jul 1, 2016 | — | Other | No | No | — | — | — | Resolved | Aug 8, 2016 | — | |
| Jul 1, 2016 | — | Other | No | No | — | — | — | Resolved | Aug 8, 2016 | — | |
| Jul 1, 2013 | Jul 31, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2013 | — | |
| Jul 1, 2013 | Jul 31, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2013 | — | |
| Jul 1, 2013 | Jul 31, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2013 | — | |
| Jul 1, 2013 | Jul 31, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2013 | — | |
| Jun 12, 2013 | — | Other | No | No | — | — | — | Resolved | Jul 12, 2013 | — | |
| Jun 12, 2013 | — | Other | No | No | — | — | — | Resolved | Jul 12, 2013 | — | |
| Apr 24, 2013 | — | TT | Yes | No | — | — | — | Resolved | May 1, 2013 | — | |
| Apr 24, 2013 | — | TT | Yes | No | — | — | — | Resolved | May 1, 2013 | — | |
| Apr 24, 2013 | — | TT | Yes | No | — | — | — | Resolved | May 1, 2013 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.