80233
Thornton, CO
Adams County · Denver-Aurora-Centennial, CO metro area
THORNTON CITY OF

Is tap water in Northglenn (80233) safe to drink?

Higher concern
Last tested: August 2025
Source: Official EPA UCMR5 federal monitoring data. Last tested August 2025.
City:
Township:
  • West Adams CCD, CO
Community:
  • Denver, CO
Neighborhoods:
  • Hazeltine Heights
  • Hazeltine
  • Rolla
  • Irondale
  • Cozy Corner
  • Dupont

The short answer for Northglenn (80233)

Thornton tap water has 7 contaminants above EPA guidelines, including lithium at 2.5× the limit (tested August 2023). See the full compound-by-compound breakdown and filter recommendations.

The health risk for Thornton

lithium 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, PFPeA above limit.
lithium concentration (µg/L) August 2023
0 µg/L 10 µg/L 50 µg/L
25.500 µg/L
Detected
µg/L
10 µg/L
EPA limit
guideline
155% above limit
Comparison
vs. guideline
EPA limit: 10 µg/L | Your water: 25.500 µg/L
Certified Filters for Thornton Tap Water

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

Water filter recommendation for Thornton 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.
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Most elevated compounds
Compound Measurement EPA Limit Comparison
lithium
Tested: August 2023 · Wes Brown TP		 25.500 µg/L 10 µg/L 155% above limit
PFPeA
Tested: August 2023 · Wes Brown TP		 0.007 µg/L 0.003 µg/L 150% above limit
lithium
Tested: November 2023 · Thornton Treatment Plant		 21.300 µg/L 10 µg/L 113% above limit
PFPeA
Tested: November 2023 · Thornton Treatment Plant		 0.005 µg/L 0.003 µg/L 83% above limit
lithium
Tested: August 2025 · Northglenn WTP		 17.600 µg/L 10 µg/L 76% above limit
View all tested compounds

Thornton Treatment Plant · Tested: November 2023

Compound Measurement EPA Limit Comparison
lithium 21.300 µg/L 10 µg/L 113% above limit
PFPeA 0.005 µg/L 0.003 µg/L 83% above limit
PFBS 0.004 µg/L 0.003 µg/L 40% above limit
PFHxA 0.006 µg/L 3 µg/L 0.2% of limit
PFBA 0.006 µg/L 6 µg/L 0.1% of 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
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
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
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Wes Brown TP · Tested: August 2023

Compound Measurement EPA Limit Comparison
lithium 25.500 µg/L 10 µg/L 155% above limit
PFPeA 0.007 µg/L 0.003 µg/L 150% above limit
PFBS 0.004 µg/L 0.003 µg/L 20% above limit
PFHxA 0.006 µg/L 3 µg/L 0.2% of limit
PFBA 0.008 µg/L 6 µg/L 0.1% of 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
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
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
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Northglenn WTP · Tested: August 2025

Compound Measurement EPA Limit Comparison
lithium 17.600 µg/L 10 µg/L 76% 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 80233

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.

Frequently Asked Questions about ZIP 80233 Tap Water

What contaminants are above EPA limits in ZIP 80233?

ZIP 80233 has 7 contaminants above EPA health guidelines in the latest available data, including lithium at 2.5x the EPA guideline. The full table on this page lists every tested compound and its measured level.

Will boiling ZIP 80233 tap water remove lithium?

No. Boiling tap water does not remove lithium. Lithium is a dissolved mineral, so heat does not break it down and evaporation can actually concentrate it. Reverse osmosis (NSF/ANSI 58) is the most reliable at-home option for reducing lithium.

Do basic pitcher filters remove lithium?

Standard pitcher filters are not certified to reduce lithium. Reverse osmosis (NSF/ANSI 58) is the most widely available home option for reducing lithium in drinking water.

Who provides tap water in ZIP 80233?

Public records identify THORNTON CITY OF as a primary water system associated with ZIP 80233. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 80233 tap water last tested?

The most recent test date used in this report is August 2025. EnviroClarity last refreshed this page on 2026-05-05.

Where can I find the official water quality report for ZIP 80233?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact THORNTON CITY OF or visit their website for the latest official report covering ZIP 80233. The EPA also maintains a national CCR locator.

Primary source EPA UCMR5 (2023-2025)
Guideline source EPA drinking water standard (lithium: 10 µg/L)
Last tested August 2025
Last page update 2026-05-05

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 Thornton → see certified filters