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Non-Transient Non-Community Water System · PWS NH0365010

Henry W Moore Sch

Operator location Candia, New Hampshire - smaller served population (≤ 999) at 319 people served; 65 SDWIS violations on record from groundwater sources.

319
People served (this PWS)
65
EPA violations (this PWS)
2
Health-based (this PWS)
Untested
UCMR5 (this PWS)
Follow published updates (RSS)

Henry W Moore Sch standing, mid SDWIS violation third

319 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 3% is middle-third health share (≤ 23%).

The verdict

Henry W Moore Sch lands in the middle third by violation volume (65), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (319; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 3% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.

65
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
319
People served by this PWS (SDWIS)
N/A
PFAS compounds detected (UCMR5)

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

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Rockingham
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
58
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrite MR 8 2009
Coliform (TCR) MR 4 2004
Revised Total Coliform Rule RPT 4 2023
Revised Total Coliform Rule MON 4 2023
Xylenes, Total MR 2 1994
DICHLOROMETHANE MR 2 1994
p-Dichlorobenzene MR 2 1994
Vinyl chloride MR 2 1994
1,1-Dichloroethylene MR 2 1994
trans-1,2-Dichloroethylene MR 2 1994
1,2-Dichloroethane MR 2 1994
1,1,1-Trichloroethane MR 2 1994
Carbon tetrachloride MR 2 1994
1,2-Dichloropropane MR 2 1994
1,1,2-Trichloroethane MR 2 1994
Tetrachloroethylene MR 2 1994
CHLOROBENZENE MR 2 1994
Benzene MR 2 1994
Ethylbenzene MR 2 1994
1,2,4-Trichlorobenzene MR 2 1994
Trichloroethylene MR 2 1994
cis-1,2-Dichloroethylene MR 2 1994
Toluene MR 2 1994
Styrene MR 2 1994
Lead and Copper Rule TT 2 1994
o-Dichlorobenzene MR 2 1994

Violation Count vs. the National Corpus

Henry W Moore Sch has 65 recorded EPA violations, 63% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 36% carry more. 3% of this system's own violations are health-based (2 of 65), and it ranks unranked by population served among that same cohort.

EPA violations vs. the national water-system corpus

Public water systems serving 500+ people (EPA SDWIS)

65 Around the middle fewer violations than 36% 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

Population served record for Henry W Moore Sch

EPA SDWIS lists 319 people served and 1 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.

Sources: EPA SDWIS

Nationwide peers

65 violations · 319 served: nearest cross-state SDWIS matches.

What to do with Henry W Moore Sch

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