Is Antrim, NH Tap Water Safe to Drink?
Graded A-, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
89.9/100
waterverge.com Antrim, NH — Water Quality Report
Antrim's drinking water received a grade of A- (89.9 out of 100), indicating good water quality. The city's 1 water system serves approximately 920 residents using groundwater.
Lead data is not currently available for this system. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 12 violations on record, including 10 health-based violations. 2 remain unresolved.
What to know about Antrim's water
Antrim ranks #3 out of 119 cities in New Hampshire for water quality, placing it one of the best in the state.
Antrim relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, Antrim may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Antrim, NH water safe to drink?
Antrim's tap water meets most EPA standards but has areas that warrant attention. With a grade of A- (89.9/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 920 residents using groundwater (wells).
Recent water quality updates for Antrim
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Antrim's water quality assessment. Grade: A- (89.9/100).
Contaminants: E. COLI.
1 health-based. Contaminants: Coliform (TCR).
Federal disaster declaration (FEMA DR-3360). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3333). Hurricane event — may have impacted local water infrastructure.
1 health-based. Contaminants: Coliform (TCR).
Violation history
Antrim's water system has 12 total violations on record, including 10 health-based violations. 2 remain unresolved.
Flood & environmental risk
Hillsborough County has experienced 9 federally declared disasters since 1973. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Nubanusit, Contoocook River.
Where does Antrim's water come from?
Antrim's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 920 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Nubanusit (river), Contoocook River (river).
What Antrim residents can do
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Antrim's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Antrim
Industrial polluters nearby
Reported releases to surface water by facilities near Antrim, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
OSRAM SYLVANIA PRODUCTS INC HILLSBORO, NH03244 | — | — | 5.0 mi |
MONADNOCK PAPER MILL BENNINGTON, NH03442 | — | — | 2.8 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D2 — severe droughtHillsborough County is currently in D2 (severe drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Hillsborough County has experienced 9 federally declared disasters since 1973. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
No contaminant data available for this city.
See how Antrim compares by contaminant
Explore where Antrim ranks among all New Hampshire cities for specific contaminants.
Water source & infrastructure
Where Antrim's water comes from
Antrim's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 920 people through 1 water system.
Water bodies near Antrim
Antrim is located near 2 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Antrim
| System Name | PWSID | Population | Source |
|---|---|---|---|
| ANTRIM SEWER AND WATER DEPT | NH0091010 | 920 | GW |
How Antrim compares
Full New Hampshire rankings →Antrim's score of 89.9/100 is above the average of 69/100 among major New Hampshire cities. It outscores 10 of 10 nearby cities.
Nearby cities
View New Hampshire rankings →About Antrim, NH
Learn more about your water
Guides and resources related to Antrim's water quality findings.
Explore water quality across Hillsborough
Frequently asked questions
Is Antrim, NH tap water safe to drink?
Antrim's water quality earned a grade of A- (89.9/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #3 out of 119 cities tested in New Hampshire.
What contaminants are in Antrim's water?
12 violations are on record.
How is Antrim's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Antrim?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Antrim's water come from?
Antrim's water is sourced from Groundwater. The city has 1 water system serving approximately 920 residents.
What health violations has Antrim's water system had?
Antrim has 10 health-based violations on record. The most recent violation was recorded in August 2017. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 2 violations remain unresolved.
Is Antrim's groundwater at risk of contamination?
Antrim uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 12 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Antrim's water compare to other cities?
Antrim ranks #3 out of 119 cities in New Hampshire (better than 97% of state cities) and #2518 out of 15744 cities nationally (84th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Antrim's small water system affect quality?
Antrim's system serves approximately 920 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 12 violations on record.