TapSafetyReport
F0/100

EMERALD LAKE — Water Quality Report 2026

Serving 1,300 people · New Hampshire

Water Source
Groundwater
County
—
System ID
NH1141020
Violations
50

Contaminant Test Results

No contaminant data available for this system.

EPA Violation History

4

Violations (last 5yr)

0

Unresolved

0

Health-Related

TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2024 – October 1, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2024 – October 1, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: November 10, 2021 – December 7, 2021Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2021 – November 1, 2021Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About EMERALD LAKE

Is EMERALD LAKE water safe to drink?

EMERALD LAKE water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 50 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has EMERALD LAKE detected?

0 contaminants were tested in EMERALD LAKE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does EMERALD LAKE have any EPA violations?

Yes, EMERALD LAKE has 50 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, RPT, MON. 31 are health-based violations.

How many people does EMERALD LAKE serve?

EMERALD LAKE serves approximately 1,300 people, New Hampshire. The system provides water to 1 community: Hillsborough.

What type of water does EMERALD LAKE provide?

EMERALD LAKE sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NH1141020.

How does EMERALD LAKE compare to other utilities in New Hampshire?

EMERALD LAKE scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our New Hampshire state page for a full comparison of water systems.

Cities Served

Hillsborough