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Tap water quality report

Grasmere Water Pct/Main

EPA monitoring tested this supplier for 13 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

13
contaminants tested
9
detected
1,125
people served
20
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
SWP
Ownership
Local government
Counties served
Hillsborough

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

20
health-based violations
39
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2018-12-02
TT Health-based Resolved 2018-12-02
TT Health-based Resolved 2018-12-02
TT Health-based Resolved 2018-12-02
MCL Health-based Resolved 2005-04-01 → 2005-06-30
MCL Health-based Resolved 2005-04-01 → 2005-06-30
MCL Health-based Resolved 2005-04-01 → 2005-06-30
MCL Health-based Resolved 2005-04-01 → 2005-06-30
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
264.6 µg/L 20%
of the EPA limit 1300 µg/L
worst single sample: 1720 µg/L
20/20 SYR4 2015–2018
Bromodichloromethane
1.61 µg/L
No EPA limit set
worst single sample: 1.7 µg/L
7/7 SYR4 2014–2019
Chloroform
3.72 µg/L
No EPA limit set
worst single sample: 4.2 µg/L
7/7 SYR4 2014–2019
Dibromochloromethane
0.8000 µg/L
No EPA limit set
 7/7 SYR4 2014–2019
Dichloroacetic Acid
6.13 µg/L
No EPA limit set
worst single sample: 6.4 µg/L
7/7 SYR4 2014–2019
TTHM
6.03 µg/L 7.5%
of the EPA limit 80 µg/L
worst single sample: 6.6 µg/L
7/7 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
7.18 µg/L 12%
of the EPA limit 60 µg/L
worst single sample: 7.9 µg/L
7/7 SYR4 2014–2019
Lead
1114.42 µg/L 7429%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 1390 µg/L
5/20 SYR4 2015–2018
Trichloroacetic Acid
1.5 µg/L
No EPA limit set
 1/7 SYR4 2014–2019
4 contaminants tested, none detected
BromoformDibromoacetic AcidMonobromoacetic AcidMonochloroacetic Acid

Utility contact

Contact
CHRISTINE DANIELS

Frequently asked questions about Grasmere Water Pct/Main

Is Grasmere Water Pct/Main tap water safe to drink?

EPA monitoring detected 9 contaminants in Grasmere Water Pct/Main's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Grasmere Water Pct/Main's water?

EPA monitoring detected Copper, Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Grasmere Water Pct/Main serve?

Grasmere Water Pct/Main reports serving 1,125 people in New Hampshire, per its EPA record.

Has Grasmere Water Pct/Main had any water quality violations?

The EPA has 39 violations on file for Grasmere Water Pct/Main, of which 20 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.