Question 1

Is Colonial Park water safe to drink?

Accepted Answer

Colonial Park (PWS ID: NH0076130) has 342 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 70 people using Groundwater sources.

Question 2

How many people does Colonial Park serve?

Accepted Answer

EPA SDWIS reports that Colonial Park serves 70 people (this public water system's service population, not the municipal population of Londonderry or any other city). It is a Private-owned system using Groundwater water sources with 1 service connections. The operator address is listed in Londonderry, New Hampshire.

Question 3

What type of violations does Colonial Park have?

Accepted Answer

Colonial Park has 342 total violations: 14 health-based violations (MCL exceedances or treatment failures), 324 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Colonial Park water?

Accepted Answer

No PFAS testing data is available for Colonial Park under the EPA's UCMR5 monitoring program.

Question 5

What water source does Colonial Park use?

Accepted Answer

Colonial Park uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.

Question 6

Where does this data come from?

Accepted Answer

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Question 7

How does Colonial Park's violation count compare nationally?

Accepted Answer

Colonial Park has 342 recorded EPA SDWIS violations, fewer than 8% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 92% of that cohort has fewer violations than Colonial Park. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

Contaminant	Category	Count	Latest
Coliform (TCR)	MCL	8	2012
Nitrate	MR	8	2001
Xylenes, Total	MR	8	2001
DICHLOROMETHANE	MR	8	2001
Vinyl chloride	MR	8	2001
1,1-Dichloroethylene	MR	8	2001
1,2-Dichloroethane	MR	8	2001
Carbon tetrachloride	MR	8	2001
1,2-Dichloropropane	MR	8	2001
Trichloroethylene	MR	8	2001
Tetrachloroethylene	MR	8	2001
Benzene	MR	8	2001
Toluene	MR	8	2001
Ethylbenzene	MR	8	2001
Styrene	MR	8	2001
1,2,4-Trichlorobenzene	MR	8	2001
o-Dichlorobenzene	MR	8	2001
p-Dichlorobenzene	MR	8	2001
1,1,2-Trichloroethane	MR	8	2001
CHLOROBENZENE	MR	8	2001
1,1,1-Trichloroethane	MR	8	2001
trans-1,2-Dichloroethylene	MR	8	2001
cis-1,2-Dichloroethylene	MR	8	2001
Endrin	MR	4	2001
Arsenic	MR	4	2001
Barium	MR	4	2001
Methoxychlor	MR	4	2001
Cadmium	MR	4	2001
Chromium	MR	4	2001
Glyphosate	MR	4	2001

Colonial Park

Colonial Park standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Population served record for Colonial Park

Nationwide peers

Cross-state systems with comparable violation load