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Tap water quality report

Massapequa Wd

EPA monitoring tested this supplier for 112 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

112
contaminants tested
20
detected
43,000
people served
0
health-based violations
New York rankingsLead in New YorkPFAS in New York
Water source
Ground water
Ownership
Mixed public/private
Counties served
Nassau

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
344
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2018-01-01 → 2018-12-31
MR Monitoring Resolved 2018-01-01 → 2018-12-31
MR Monitoring Resolved 2018-01-01 → 2018-12-31
MR Monitoring Resolved 2018-01-01 → 2018-12-31
MR Monitoring Resolved 2018-01-01 → 2018-12-31
MR Monitoring Resolved 2018-01-01 → 2018-12-31
MR Monitoring Resolved 2018-01-01 → 2018-12-31
MR Monitoring Resolved 2018-01-01 → 2018-12-31
MR Monitoring Resolved 2005-10-01 → 2005-12-31
MR Monitoring Resolved 2005-10-01 → 2005-12-31

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
147 µg/L 11%
of the EPA limit 1300 µg/L
worst single sample: 560 µg/L
56/72 SYR4 2012–2019
Lead
4.82 µg/L 32%
of the EPA limit 15 µg/L
worst single sample: 8.5 µg/L
35/72 SYR4 2012–2019
Barium
8.75 µg/L 0.4%
of the EPA limit 2000 µg/L
worst single sample: 9 µg/L
26/74 SYR4 2012–2019
Combined Uranium
1.37192 µg/L 4.6%
of the EPA limit 30 µg/L
worst single sample: 1.6092 µg/L
14/28 SYR4 2013–2019
Gross Beta Particle Activity
2.4465 pCi/L
No EPA limit set
worst single sample: 2.91 pCi/L
10/14 SYR4 2018–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2023
Combined Radium (-226 And -228)
1.852 pCi/L 37%
of the EPA limit 5 pCi/L
worst single sample: 1.96 pCi/L
5/28 SYR4 2013–2019
Nitrate
1160 µg/L 12%
of the EPA limit 10000 µg/L
 4/150 SYR4 2012–2019
Tetrachloroethylene
1.361 µg/L 27%
of the EPA limit 5 µg/L
worst single sample: 1.4 µg/L
2/295 SYR4 2012–2019
Arsenic
1.53 µg/L 15%
of the EPA limit 10 µg/L
 1/74 SYR4 2012–2019
Beryllium, Total
1.62 µg/L 41%
of the EPA limit 4 µg/L
 1/74 SYR4 2012–2019
Cadmium
1.96 µg/L 39%
of the EPA limit 5 µg/L
 1/74 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
1.2 µg/L 20%
of the EPA limit 6 µg/L
 1/74 SYR4 2012–2019
Dibromoacetic Acid
0.3600 µg/L
No EPA limit set
 1/4 SYR4 2017–2018
Dichloroacetic Acid
0.2900 µg/L
No EPA limit set
 1/4 SYR4 2017–2018
Gross Alpha, Excl. Radon And U
3.08 pCi/L 21%
of the EPA limit 15 pCi/L
 1/28 SYR4 2013–2019
Monobromoacetic Acid
0.3100 µg/L
No EPA limit set
 1/4 SYR4 2017–2018
Nitrate-Nitrite
130 µg/L 1.3%
of the EPA limit 10000 µg/L
 1/74 SYR4 2012–2019
Thallium, Total
1.3 µg/L 65%
of the EPA limit 2 µg/L
 1/74 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
0.9600 µg/L 1.6%
of the EPA limit 60 µg/L
 1/4 SYR4 2017–2018
92 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBromodichloromethaneBromoformChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
REILLY, KEVIN
Phone
516-798-5266
Email
[email protected]

Frequently asked questions about Massapequa Wd

Is Massapequa Wd tap water safe to drink?

EPA monitoring detected 20 contaminants in Massapequa Wd'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 Massapequa Wd's water?

EPA monitoring detected Copper, Lead, Barium, Combined Uranium, Gross Beta Particle Activity, and others. The full list with the level and data source for each is above.

How many people does Massapequa Wd serve?

Massapequa Wd reports serving 43,000 people in New York, per its EPA record.

Has Massapequa Wd had any water quality violations?

The EPA has 344 violations on file for Massapequa Wd, 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.