EXETER WATER DEPT
PWSID: NH0801010 · Exeter, NH · Serves 12,236 people
According to EPA Safe Drinking Water Information System (SDWIS), EXETER WATER DEPT (PWSID NH0801010) in Exeter, NH is listed as a CWS water system covering about 12,236 people. The same extract lists 22 health-based violation records spanning 2014-2025. Those 22 health-based rows for EXETER WATER DEPT cover contaminants such as TTHM; they remain historical EPA registry entries, not a current compliance or drinkability score.
EXETER WATER DEPT has 22 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 1 distinct EPA contaminant code appears in this system's record, including TTHM. Recorded violations span 2014–2025. Day-to-day primacy enforcement for this system runs through the New Hampshire drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the New Hampshire state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- NH0801010
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Exeter, NH
- Population Served
- 12,236
- Health Violations
- Yes (22)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 22 | 22 |
Violation History (22)
| Contaminant | Health | Date |
|---|---|---|
| TTHM | Yes | Oct 1, 2025 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Jan 1, 2019 |
| TTHM | Yes | Oct 1, 2018 |
| TTHM | Yes | Jul 1, 2018 |
| TTHM | Yes | Apr 1, 2018 |
| TTHM | Yes | Jan 1, 2018 |
| TTHM | Yes | Oct 1, 2017 |
| TTHM | Yes | Jul 1, 2017 |
| TTHM | Yes | Apr 1, 2017 |
| TTHM | Yes | Jan 1, 2017 |
| TTHM | Yes | Oct 1, 2016 |
| TTHM | Yes | Jul 1, 2016 |
| TTHM | Yes | Apr 1, 2016 |
| TTHM | Yes | Jan 1, 2016 |
| TTHM | Yes | Oct 1, 2015 |
| TTHM | Yes | Jul 1, 2015 |
| TTHM | Yes | Apr 1, 2015 |
| TTHM | Yes | Jan 1, 2015 |
| TTHM | Yes | Oct 1, 2014 |
| TTHM | Yes | Jul 1, 2014 |
Frequently Asked Questions
What does EPA SDWIS list for EXETER WATER DEPT?
How many people does EXETER WATER DEPT serve?
What violations does EXETER WATER DEPT have?
What contaminants have been found in EXETER WATER DEPT water?
Compare beyond New Hampshire
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest EXETER WATER DEPT on cumulative violation count (22) and EPA-reported population served (12,236). Violation-count peers include TWIN BUTTES WATER PLANT, MARION COUNTY PUBLIC WATER AUTHORITY, TAYLOR WATERWORKS. Population peers include ERWIN UTILITIES AUTHORITY, DEFUNIAK SPRINGS W/S, CITY OF, JBMDL - MCGUIRE AFB.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
Explore More
About This Data
EXETER WATER DEPT (NH0801010) is drawn from EPA SDWIS. Nearby county systems in this extract include PORTSMOUTH WATER WORKS; SALEM WATER DEPT; DERRY WATER DEPT; SEABROOK WATER DEPT. Health-based rows (22 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.