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Newell Warnock WA

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
160 people
Connections
59
Water source
Surface water
Based in
Loveland, CO
County
Larimer
Owner
Private
The ZIP code it serves

80537

The short answer

1 result is above the health goal. The worst: Lead, above the health goal. 1 health-based violation since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2007 to 2025.

Copper: EPA’s file records a utility’s copper only when it exceeds the action level. The last here was 1.4 ppm, for the period ending June 30, 2000. None since is on file, so it is not counted as a current finding.

Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, nitrate, arsenic, chromium (total) and uranium: Colorado’s own results, samples taken from Feb. 3, 2020 to Aug. 12, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the health goal1

Lead

Comes from pipes, often your own

Above the health goal

2.5ppb

90th percentile, 2023 to 2025

In the latest period, 9 in 10 homes sampled were at or below 2.5 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

Below EPA’s limits4

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

80.5ppb

Highest yearly average, 2020 to 2026

2026 average: 46.2 ppb

Averaged by year, the highest was 80.5 ppb, in 2024, which EPA rounds to 80 ppb to compare: at its legal limit of 80 ppb, not above it. Its highest single sample was 110 ppb. In 2026, the latest year on file, its three samples averaged 46.2 ppb. EPA recorded no violation for total trihalomethanes (TTHM) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 79.1 ppb, in 2012, and EPA recorded a violation in 2012.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

51.4ppb

Highest yearly average, 2020 to 2026

2026 average: 43.6 ppb

Averaged by year, the highest was 51.4 ppb, in 2023, below EPA’s legal limit of 60 ppb. Its highest single sample was 80.7 ppb. In 2026, the latest year on file, its three samples averaged 43.6 ppb. EPA recorded no violation for haloacetic acids (HAA5) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 59.1 ppb, in 2012, and EPA recorded a violation in 2012.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.14ppm

Highest yearly average, 2020 to 2026

2026, one sample: 0.11 ppm

Averaged by year, the highest was 0.14 ppm, in 2024, below EPA’s legal limit of 4.0 ppm. In 2026, the latest year on file, its one sample was 0.11 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.54 ppm, in 2013.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.2ppm

Highest sample; found in 1 of 7

2026: not found

The highest sample, in 2023, was 0.2 ppm, below EPA’s legal limit of 10 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 sample of 0.2 ppm, in 2012.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Uranium

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.”

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. 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

Compare five-year costs

The best water filters for lead, ranked

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Surface Water Treatment RuleRequired treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR)Feb. 1, 2023 to Feb. 28, 2023—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 1 monitoring or reporting violation not shown.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, nitrate, arsenic, chromium (total) and uranium results here are Colorado’s own from 2020 on, with EPA’s national file for 2012 to 2019. Newell Warnock WA’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 Feb. 3, 2020 to Aug. 12, 2026.

Testing your own tap

Newell Warnock WA’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 Newell Warnock WA serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • EAnalytics Laboratory

    Loveland, CO · about 9 miles

    Certified for bacteria

  • M.M.S Environmental Laboratories

    Fort Collins, CO · about 11 miles

    Certified for bacteria

  • Technology Laboratory, Inc.

    Fort Collins, CO · about 11 miles

    Certified for nitrate, minerals and other inorganics, organic chemicals

All 54 certified labs for Colorado

Sources

PWSID CO0135538. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Larimer County

All Colorado utilities

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