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States → New Hampshire

Community Water System · PWS NH0091010

Antrim Sewer and Water Dept

Operator location Antrim, New Hampshire - 79% of 58 violations are health-based (upper-third health share (> 23%)); groundwater source; 920 served per SDWIS.

920
People served (this PWS) Smaller third of systems
58
EPA violations (this PWS) Middle third of systems
46
Health-based (this PWS) Upper third by health-based share
Untested
UCMR5 (this PWS) No UCMR5 result
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Antrim Sewer and Water Dept standing, mid SDWIS violation third

79% of 58 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 79% is upper-third health share (> 23%). Population rank #20,732 of 29,740 among systems serving 500+.

The verdict

Antrim Sewer and Water Dept lands in the middle third by violation volume (58), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (920; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 79% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.

#20,732 of 29,740
Population · /systems
#138 of 284
Population · NH
58
Total EPA violations on record
79%
Health-based (MCL / treatment failure)

Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.

F
Water Safety Score
22/100
Antrim Sewer and Water Dept

Based on EPA SDWIS violation history and UCMR5 PFAS testing only, not water taste, odor, infrastructure age, or contaminants outside the federally tracked set.

Health-based violations F
46
EPA SDWIS health-based violations on record (MCL, MRDL, treatment technique)
Monitoring & reporting violations C+
12
Non-health SDWIS violations (monitoring, reporting, and other compliance)
PFAS contamination N/A
Not UCMR5-tested
Highest PFAS compound level detected in UCMR5 testing

System Details

System Type
Community
Owner Type
Local
Connections
368
County
Hillsborough
School/Daycare
No
MCL Violations
46
Monitoring Violations
4
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 46 2014
E. COLI MR 4 2017

Violation Count vs. the National Corpus

Antrim Sewer and Water Dept has 58 recorded EPA violations, 60% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 39% carry more. 79% of this system's own violations are health-based (46 of 58), and it ranks #20,732 of 29,740 by population served among that same cohort.

EPA violations vs. the national water-system corpus

Public water systems serving 500+ people (EPA SDWIS)

58 Around the middle fewer violations than 39% of 29,740 water systems

the national water-system corpus, bucketed by value

Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source EPA SDWIS · 2026-05-15

How many violations vs. how serious, among peer systems

Antrim Sewer and Water Dept plotted against 29 peer public water systems (500+ people served), by total violation count (x) and the share of those violations that are health-based (y). The crosshair sits at this sample's own median on each axis. A high violation count does not automatically mean a serious record: most monitoring and reporting violations are minor, not health-based.

Violation volume vs. health-based share

30 public water systems (500+ people served), EPA SDWIS current release. 2×2 strategic matrix plotting 30 entities by Total violations (X) and Health-based share (Y), with a crosshair dividing the plot into four quadrants. Frequent and seriousRare but seriousFrequent, mostly paperworkClean record 0200400600 0%20%40%60%80%100% Total violations Health-based share Violation volume vs. health-based share Miccosukee Service Plaza-0, 0%Brazoria - Fort Bend Counties MUD 3-0, 0%Tanglewilde Thompson Place 600-2, 0%Center Water Co-5, 0%Montgomery Co RWD 12-7, 29%Spring Mills Elem School/Hvs-9, 0%Irvin Water District #6-11, 27%Great Bend Industrial Park-14, 0%Nooksack Valley Water Association-16, 31%Glen Park Village-19, 0%Camp Is-Sho-Da-22, 0%Kipling Oaks 1-25, 16%McLouth, City Of-29, 17%Hamilton-33, 0%Pine Valley Plantation-37, 24%Lake Gibson Estates-42, 2%Ticonderoga WD-47, 26%Town of Welaka-54, 0%Township of Blairstown Dpw-61, 0%McIntosh Water & Fire Pro Authority-71, 0%Sunset Ridge Water District-82, 15%South Deerfield Water Supply District-96, 16%Clarkdale Municipal Water System-114, 0%Orange Water Dept-136, 14%Mount Pleasant Water Sys #1-167, 11%Benson Culinary Improvement District-212, 1%Eureka Water Association-273, 0%City of Ballinger-372, 85%Conemaugh Twp Muni Auth-567, 1%Antrim Sewer and Water Dept-58, 79%
30 public water systems (500+ people served), EPA SDWIS current release.

Health-based violations on Antrim Sewer and Water Dept

46 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for NH0091010.

EPA SDWIS · PWS NH0091010

Sources: EPA SDWIS

Nationwide peers

58 violations · 920 served: nearest cross-state SDWIS matches.

Cross-state systems near this violation count

Nearest cross-state community systems (500+ served) by total SDWIS violations on record.

4 peers

Cross-state systems with smaller service footprints

Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).

4 peers

What to do with Antrim Sewer and Water Dept

Use this system's EPA-reported record as a starting filter, not a final verdict.

EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.