Is Garrison Lake Pump District Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Kent

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	1997-07-01 → 1997-09-30
MCL	Health-based	Resolved	1997-07-01 → 1997-09-30
MCL	Health-based	Resolved	1997-07-01 → 1997-09-30
MCL	Health-based	Resolved	1997-04-01 → 1997-06-30
MCL	Health-based	Resolved	1997-04-01 → 1997-06-30
MCL	Health-based	Resolved	1997-04-01 → 1997-06-30
MCL	Health-based	Archived	1990-02-06 → 1990-05-05
MCL	Health-based	Archived	1983-12-21 → 1984-01-20
Other	Monitoring	Resolved	2002-07-01 → 2002-07-25
MR	Monitoring	Resolved	2001-07-01

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	7704.09 µg/L 77% of the EPA limit 10000 µg/L worst single sample: 9100 µg/L	200/246	SYR4	2012–2019
Nitrate-Nitrite	7708.18 µg/L 77% of the EPA limit 10000 µg/L worst single sample: 9100 µg/L	99/122	SYR4	2012–2019
Copper	73.435 µg/L 5.6% of the EPA limit 1300 µg/L worst single sample: 115 µg/L	64/69	SYR4	2012–2019
Fluoride	322 µg/L 8.1% of the EPA limit 4000 µg/L worst single sample: 330 µg/L	29/123	SYR4	2012–2019
Chloroform	18.5985 µg/L No EPA limit set worst single sample: 19.54 µg/L	22/33	SYR4	2012–2019
Bromodichloromethane	5.15 µg/L No EPA limit set worst single sample: 7.4 µg/L	21/33	SYR4	2012–2019
Dibromochloromethane	3.23 µg/L No EPA limit set worst single sample: 4.36 µg/L	21/33	SYR4	2012–2019
Lead	0.00062 mg/L 4.1% of the EPA limit 0.0150 mg/L	16/16	LCR	2026
Dichloroacetic Acid	4.53765 µg/L No EPA limit set worst single sample: 4.576 µg/L	14/16	SYR4	2013–2019
TTHM	27.485 µg/L 34% of the EPA limit 80 µg/L worst single sample: 30.8 µg/L	14/14	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	8.7432 µg/L 15% of the EPA limit 60 µg/L worst single sample: 9.154 µg/L	14/15	SYR4	2013–2019
Trichloroacetic Acid	4.2224 µg/L No EPA limit set worst single sample: 4.637 µg/L	13/16	SYR4	2013–2019
Lead	5.96 µg/L 40% of the EPA limit 15 µg/L worst single sample: 7.4 µg/L	7/69	SYR4	2012–2019
Bromoform	0.9100 µg/L No EPA limit set worst single sample: 0.9800 µg/L	6/33	SYR4	2012–2019
Combined Radium (-226 And -228)	1.43 pCi/L 29% of the EPA limit 5 pCi/L worst single sample: 1.52 pCi/L	5/5	SYR4	2013–2019
Chromium	6.21 µg/L 6.2% of the EPA limit 100 µg/L worst single sample: 6.3 µg/L	4/6	SYR4	2013–2019
Xylenes, Total	6.178 µg/L 0.1% of the EPA limit 10000 µg/L worst single sample: 6.49 µg/L	4/30	SYR4	2012–2019
Lithium	16.6 µg/L No EPA limit set	4/6	UCMR-5	2025
Dibromoacetic Acid	1.114 µg/L No EPA limit set worst single sample: 1.12 µg/L	2/16	SYR4	2013–2019
Barium	110.3 µg/L 5.5% of the EPA limit 2000 µg/L	1/5	SYR4	2013–2019
Cadmium	0.6000 µg/L 12% of the EPA limit 5 µg/L	1/6	SYR4	2013–2019
Pentachlorophenol	0.5600 µg/L 56% of the EPA limit 1 µg/L	1/8	SYR4	2012–2018
Selenium	1.55 µg/L 3.1% of the EPA limit 50 µg/L	1/6	SYR4	2013–2019

83 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Garrison Lake Pump District

Is Garrison Lake Pump District tap water safe to drink?

EPA monitoring detected 23 contaminants in Garrison Lake Pump District'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 Garrison Lake Pump District's water?

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

How many people does Garrison Lake Pump District serve?

Garrison Lake Pump District reports serving 17,148 people, per its EPA record.

Has Garrison Lake Pump District had any water quality violations?

The EPA has 11 violations on file for Garrison Lake Pump District, of which 8 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.