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Tap water quality report

Nj American Water - Twin Lakes

EPA monitoring tested this supplier for 52 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

52
contaminants tested
16
detected
250
people served
0
health-based violations
New Jersey rankingsLead in New JerseyPFAS in New Jersey
Water source
Ground water
Ownership
Private
Counties served
Somerset

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.

0
health-based violations
23
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2006-01-01 → 2006-12-31
MR Monitoring Resolved 2006-01-01 → 2006-12-31
MR Monitoring Resolved 2004-10-01
MR Monitoring Resolved 2003-01-01 → 2003-12-31
MR Monitoring Archived 2000-06-01 → 2000-06-30
MR Monitoring Resolved 1999-01-01 → 1999-12-31
MR Monitoring Archived 1994-08-01 → 1994-08-31
MR Monitoring Archived 1991-08-01 → 1991-08-31
MR Monitoring Archived 1988-06-01 → 1991-05-31
MR Monitoring Archived 1988-06-01 → 1991-05-31

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
1092.5 µg/L 84%
of the EPA limit 1300 µg/L
worst single sample: 1300 µg/L
26/29 SYR4 2012–2019
Nitrate
5240 µg/L 52%
of the EPA limit 10000 µg/L
 20/20 SYR4 2012–2019
Chloroform
6.45 µg/L
No EPA limit set
worst single sample: 16.8 µg/L
16/16 SYR4 2012–2019
TTHM
14.5 µg/L 18%
of the EPA limit 80 µg/L
worst single sample: 28 µg/L
16/16 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Dibromochloromethane
3.67 µg/L
No EPA limit set
worst single sample: 4 µg/L
12/16 SYR4 2012–2019
Bromodichloromethane
4.35 µg/L
No EPA limit set
worst single sample: 6 µg/L
11/16 SYR4 2012–2019
Lead
9 µg/L 60%
of the EPA limit 15 µg/L
worst single sample: 13 µg/L
11/24 SYR4 2012–2019
Bromoform
1.575 µg/L
No EPA limit set
worst single sample: 1.8 µg/L
10/16 SYR4 2012–2019
Fluoride
575.15 µg/L 14%
of the EPA limit 4000 µg/L
worst single sample: 590 µg/L
10/14 SYR4 2012–2019
Nitrate-Nitrite
5096 µg/L 51%
of the EPA limit 10000 µg/L
worst single sample: 5240 µg/L
10/10 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
14.98 µg/L 25%
of the EPA limit 60 µg/L
worst single sample: 15.9 µg/L
9/16 SYR4 2012–2019
Dibromoacetic Acid
2.375 µg/L
No EPA limit set
worst single sample: 2.5 µg/L
6/16 SYR4 2012–2019
Dichloroacetic Acid
14.4 µg/L
No EPA limit set
worst single sample: 14.6 µg/L
5/16 SYR4 2012–2019
Trichloroacetic Acid
3.185 µg/L
No EPA limit set
worst single sample: 3.3 µg/L
2/16 SYR4 2012–2019
Monobromoacetic Acid
1.3 µg/L
No EPA limit set
 1/16 SYR4 2012–2019
36 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBariumBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumCombined Radium (-226 And -228)DichloromethaneEthylene DibromideEthylbenzeneMercuryMonochloroacetic AcidNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
OESTERLE, WILLIAM
Phone
973-564-5727

Frequently asked questions about Nj American Water - Twin Lakes

Is Nj American Water - Twin Lakes tap water safe to drink?

EPA monitoring detected 16 contaminants in Nj American Water - Twin Lakes'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 Nj American Water - Twin Lakes's water?

EPA monitoring detected Copper, Nitrate, Chloroform, TTHM, Lead, and others. The full list with the level and data source for each is above.

How many people does Nj American Water - Twin Lakes serve?

Nj American Water - Twin Lakes reports serving 250 people in New Jersey, per its EPA record.

Has Nj American Water - Twin Lakes had any water quality violations?

The EPA has 23 violations on file for Nj American Water - Twin Lakes, of which 0 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.