86305
Williamson, AZ
Yavapai County · Prescott Valley-Prescott, AZ metro area
PRESCOTT CITY OF

Is Williamson tap water safe to drink?

Higher concern
Last tested: November 2023
Source: EPA UCMR5 utility monitoring plus EPA Water Quality Portal well sampling (mapped to nearest ZIP). Last tested November 2023.
City:
Township:
  • Prescott CCD, AZ

The short answer for Williamson

Williamson tap water has 8 contaminants above EPA guidelines, including Lead at 6.5× the limit (tested January 2024). See the full compound-by-compound breakdown and filter recommendations.

The health risk for Williamson

Lead has been detected above EPA limits in this water system's recent tests. A certified filter designed for this contaminant type is strongly recommended.
  • lithium, PFBS, PFHpA, PFHxS, PFOA, PFOS, PFPeA above limit.
Lead concentration (µg/L) January 2024
0 µg/L 15 µg/L 100 µg/L
97.000 µg/L
Detected
µg/L
15 µg/L
EPA limit
guideline
547% above limit
Comparison
vs. guideline
EPA limit: 15 µg/L | Your water: 97.000 µg/L
Certified Filters for Williamson Tap Water

Lead was detected above EPA limits. These filters are independently certified to reduce common drinking-water contaminants.

Water filter recommendation for Williamson tap water: Epic Pure XP Water Filter Pitcher
Pitcher filter
Epic Pure XP Water Filter Pitcher
NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.
NSF/ANSI 42, 53, 401 & P473Removes 99.99% PFASMade in USABPA-free
Best for renters or quick setup. No installation needed.
Get the Epic Pure XP →
Most elevated compounds
Compound Measurement EPA Limit Comparison
Lead
Tested: January 2024 · B-18-06 24DDD		 97.000 µg/L 15 µg/L 547% above limit
PFPeA
Tested: November 2023 · C.O.P		 0.015 µg/L 0.003 µg/L 397% above limit
PFOA
Tested: November 2023 · C.O.P		 0.011 µg/L 0.004 µg/L 185% above limit
PFBS
Tested: November 2023 · C.O.P		 0.007 µg/L 0.003 µg/L 150% above limit
PFOS
Tested: November 2023 · C.O.P		 0.009 µg/L 0.004 µg/L 117% above limit
View all tested compounds

C.O.P · Tested: November 2023

Compound Measurement EPA Limit Comparison
PFPeA 0.015 µg/L 0.003 µg/L 397% above limit
PFOA 0.011 µg/L 0.004 µg/L 185% above limit
PFBS 0.007 µg/L 0.003 µg/L 150% above limit
PFOS 0.009 µg/L 0.004 µg/L 117% above limit
PFHxS 0.006 µg/L 0.004 µg/L 62% above limit
PFHpA 0.004 µg/L 0.003 µg/L 20% above limit
lithium 9.100 µg/L 10 µg/L 91% of limit
PFHxA 0.013 µg/L 3 µg/L 0.4% of limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

B-18-06 24DDD · Tested: January 2024

Compound Measurement EPA Limit Comparison
Lead 97.000 µg/L 15 µg/L 547% above limit
Arsenic 2.200 µg/L 10 µg/L 22% of limit
Uranium 3.800 µg/L 30 µg/L 13% of limit
Copper 4.600 µg/L 1300 µg/L 0.4% of limit
Nitrate 0.570 mg/L 1E+04 mg/L 0.0% of limit
Alkalinity, bicarbonate 290.000 mg/L — —
Alkalinity, total 290.000 mg/L — —
Barium 34.000 µg/L — —
Cadmium 0.110 µg/L — —
Calcium 65.000 mg/L — —
Chloride 11.000 mg/L — —
Fluoride 1.200 mg/L — —
Hardness, carbonate 280.000 mg/L — —
Langelier Saturation Index 0.500 None — —
Magnesium 28.000 mg/L — —
Sodium 15.000 mg/L — —
Sulfate 4.200 mg/L — —
Total dissolved solids 310.000 mg/L — —

C.O.P. · Tested: November 2023

Compound Measurement EPA Limit Comparison
lithium 12.500 µg/L 10 µg/L 25% above limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Water utilities serving ZIP 86305

Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.

Modeled boundaries are shown with a dashed outline. Outlines appear when service-area boundary data is available for this ZIP.

Frequently Asked Questions about ZIP 86305 Tap Water

What contaminants are above EPA limits in ZIP 86305?

ZIP 86305 has 8 contaminants above EPA health guidelines in the latest available data, including Lead at 6.5x the EPA guideline. The full table on this page lists every tested compound and its measured level.

Will boiling ZIP 86305 tap water remove Lead?

Boiling tap water can kill many pathogens, but it does not remove most chemical contaminants tracked in EPA monitoring. Several dissolved contaminants can even concentrate as water evaporates. For the chemical contaminants reported in ZIP 86305, a certified filter is more reliable.

Do basic pitcher filters remove Lead?

Basic pitcher filters are typically rated for chlorine, taste, and odor (NSF/ANSI 42), not for the broader list of contaminants tracked in EPA monitoring. Match the certification (NSF/ANSI 42, 53, 58, or P473) to the specific compounds listed in this report before assuming a filter helps.

Who provides tap water in ZIP 86305?

Public records identify PRESCOTT CITY OF as a primary water system associated with ZIP 86305. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 86305 tap water last tested?

The most recent test date used in this report is November 2023. EnviroClarity last refreshed this page on 2026-05-04.

Where can I find the official water quality report for ZIP 86305?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact PRESCOTT CITY OF or visit their website for the latest official report covering ZIP 86305. The EPA also maintains a national CCR locator.

Primary source EPA UCMR5 (2023-2025) + EPA WQP (well monitoring near ZIP)
Guideline source EPA drinking water standard (lithium: 10 µg/L)
Last tested November 2023
Last page update 2026-05-04

Check another ZIP code

    Nearby ZIP reports

    Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.

    Protect your water in Williamson → see certified filters