Short answer: In the 2024–2025 records we hold for Mount Kisco, no listed result is above a legal limit, but a health-based violation is on record (EPA SDWIS). Also worth knowing: lithium sits above a screening level. 3 substances were detected and 28 were tested and not detected. The water is from Mount Kisco Water Department, serving 11,187 residents.
MOUNT KISCO WATER DEPARTMENT (EPA PWSID NY5903437) delivers surface water to 11,187 residents. This report reflects 29 individual PFAS result(s) from the source UCMR5 observations and the latest Lead & Copper Rule 90th-percentile result. Water hardness and disinfectant type are pending the utility's own annual report.
Track record
1health-based violation in the last 10 years
From EPA SDWIS. Counted once per contaminant per year, as in the Track record score.
Not in this recordDisinfection by-products weren't monitored in this dataset
No result is not a pass. Your utility's annual water quality report may list them, and a certified lab test covers your own tap.
Health-based violations, last 10 years
Every filing is listed; the Track record score counts at most one per contaminant per year.
The record describes water leaving treatment and samples across the system. Pipes, solder and fixtures inside a building can add lead the record can’t see, especially in older buildings with lead service lines.
Each card names which Mount Kisco findings its current certification covers, and which it doesn't.
As an Amazon Associate, PurityMap earns from qualifying purchases. A product appears here only when a current certification record covers at least one identified concern; every concern stays listed. The retail offer is looked up afterwards and never changes which products appear or their order. Affiliate disclosure.
Mount Kisco Water Department reported 2 lead and 29 galvanized service lines to replace in EPA’s inventory (2026Q2). Many utilities replace these lines for free or share the cost. Ask Mount Kisco Water Department whether your home’s line is on its list before you pay anyone.
Local help
Think your plumbing may be adding lead?
Call to be connected with a local plumbing provider about lead service lines, repiping or fixture replacement.
Your path: I live in an older buildingLead from plumbing is the main question
Older buildings may have lead service lines, solder or fixtures. Mount Kisco’s record shows lead at 1 µg/L (15 µg/L federal action level). Test first-draw water, then filter if needed.
1 of 29 PFAS tested was detected in Mount Kisco’s record (PFPeA 3.1 ng/L). If PFAS matters to you, a filter certification names each compound it covers.
Look forNSF/ANSI 53 or 58, with each compound you care about named on the listing
Your path: My water tastes of chlorineThe disinfectant is not in this record
Most utilities keep chlorine or chloramine in the pipes. A carbon filter certified for taste and odor reduces either; your utility can tell you which it uses.
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Mount Kisco, PFPeA 3.1 ng/L was detected, with no federal or state limit; the lead 90th-percentile result was 1 µg/L against the 15 µg/L action level. MOUNT KISCO WATER DEPARTMENT (PWSID NY5903437) has a Purity Score of 96/100 (confidence: moderate), assessed at the water-system level and computed only from contaminants that were measured. Water can change in your own pipes, so a certified test is the only way to know what comes out of your tap. What we found →
Who provides tap water in Mount Kisco?+
MOUNT KISCO WATER DEPARTMENT (PWS ID NY5903437) is the public water system on record for Mount Kisco, New York, serving about 11,187 people. Confirm the utility on your water bill before acting on a specific finding. Water utility →
Where does Mount Kisco get its drinking water?+
Surface water (primary source of record in EPA SDWIS). Water utility →
Are PFAS "forever chemicals" in Mount Kisco's water?+
Yes. In EPA's UCMR 5 testing (2024-03-20 to 2024-12-10), PFPeA was detected at 3.1 ng/L. It has no federal or state limit, so PurityMap shows it without grading it. No PFAS with a limit was detected. What we found →
Is there lead in Mount Kisco's tap water?+
MOUNT KISCO WATER DEPARTMENT's most recent lead 90th-percentile result (2025) was 1 µg/L, below the 15 µg/L action level. That figure comes from sampled homes; lead usually enters from a building's own pipes and fixtures, so only a test at your tap tells you what you drink. Your household →
What does the latest Mount Kisco water report show?+
PurityMap's current record for Mount Kisco holds 31 findings: 1 above a reference, 1 detected within the reference, 1 detected with no limit and 28 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass. Records →
EPA SDWIS, EPA UCMR 5 and utility reports, each dated and linked.
02Normalize
Units converted to one basis; a non-detect kept distinct from zero.
03Classify
Each result tagged by reference type: MCL, action level, screening level or aesthetic.
04Compare to the named reference
Every value sits against its own reference, never a blended one.
05Score
Measured subjects summarised at the water-system level; an open health-based violation caps the score.
06Match treatment
Treatment is matched to what was found; a product is called certified only when its current certification names it.
What the Purity Score means: a summary of this water system’s published record, capped while a health-based violation is open. It is not a test of any tap. MOUNT KISCO WATER DEPARTMENT · PWSID NY5903437 · Purity Score 96/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
