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Wattenberg Improvement Assoc

What EPA’s and Colorado’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
350 people
Connections
100
Water source
Groundwater
Based in
Fort Lupton, CO
County
Weld
Owner
Private
The 2 ZIP codes it serves

80603, 80621

The short answer

2 results are above the health goal. The worst: Nitrate, above the health goal. No health-based violations on file since 2016.

What handles it

What was found

Nitrate, uranium, fluoride, total trihalomethanes (TTHM), arsenic, chromium (total) and haloacetic acids (HAA5): Colorado’s own results, samples taken from Jan. 8, 2020 to Sept. 23, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the health goal2

Nitrate

Comes from the source

Above the health goal

12.7ppm

Highest sample; found in 95 of 95

2026 average: 2.4 ppm

One sample, in 2022, was above EPA’s legal limit of 10 ppm, at 12.7 ppm. No follow-up sample at that point within 30 days is on file. 10 ppm is also EPA’s health goal. In 2026, the latest year on file, its 10 samples averaged 2.4 ppm. EPA recorded no violation for nitrate at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 27.6 ppm, in 2014, and EPA recorded violations in 2013, 2014 and 2015.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Uranium

Comes from the source

Above the health goal

2.0ppb

Highest yearly average, 2020 to 2026

2026, one sample: 1.5 ppb

Averaged by year, the highest was 2.0 ppb, in 2020: below EPA’s legal limit of 30 ppb, but above its health goal of zero. In 2026, the latest year on file, its one sample was 1.5 ppb.

What handles it

Below EPA’s limits2

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.28ppm

Highest yearly average, 2020 to 2026

2026: not found

Averaged by year, the highest was 0.28 ppm, in 2020, below EPA’s legal limit of 4.0 ppm. In 2026, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.31 ppm, in 2014.

What handles it

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

3.9ppb

Highest yearly average, 2020 to 2026

2026, one sample: 2.4 ppb

Averaged by year, the highest was 3.9 ppb, in 2023, below EPA’s legal limit of 80 ppb. In 2026, the latest year on file, its one sample was 2.4 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 6.5 ppb, in 2018.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Haloacetic acids (HAA5)
  • Lead

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claim: Nitrate/Nitrite (30 ppm challenge)

    For: Nitrate

  • NSF/ANSI 58

    Claims: Nitrate/Nitrite Reduction, Uranium

    For: Nitrate, Uranium

    Other certifiers’ wording: Nitrate

At the tap, or for the whole house?

These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

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The best reverse osmosis systems, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There are 10 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Nitrate, uranium, fluoride, total trihalomethanes (TTHM), arsenic, chromium (total) and haloacetic acids (HAA5) results here are Colorado’s own from 2020 on, with EPA’s national file for 2012 to 2019. Wattenberg Improvement Assoc’s own annual report, which it must send you every year, has the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Colorado’s results run from Jan. 8, 2020 to Sept. 23, 2026.

Testing your own tap

Wattenberg Improvement Assoc’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Colorado certifies.

The 3 labs Colorado certifies closest to the area Wattenberg Improvement Assoc serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Colorado Analytical Laboratory - Commerce City

    Commerce City, CO · about 12 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity

  • Murray-Brown Laboratories, LLC.

    Northglenn, CO · about 14 miles

    Certified for bacteria

  • SGS North America, Inc. - Denver

    Denver, CO · about 18 miles

    Certified for nitrate, lead and copper, metals, minerals and other inorganics

All 54 certified labs for Colorado

Sources

PWSID CO0162833. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Weld County

All Colorado utilities

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