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Florissant WSD

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
250 people
Connections
95
Water source
Groundwater influenced by surface water
Based in
Florissant, CO
County
Teller
Owner
Local government
The ZIP code it serves

80816

The short answer

1 result is above EPA’s legal limit, and 2 more are above the health goal. The worst: Total trihalomethanes (TTHM), above the legal limit. 6 health-based violations since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2021 to 2026.

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 Dec. 31, 2017. None since is on file, so it is not counted as a current finding.

Total trihalomethanes (TTHM), arsenic, nitrate, fluoride, haloacetic acids (HAA5) and chromium (total): Colorado’s own results, samples taken from Feb. 19, 2020 to Aug. 17, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the legal limit1

Total trihalomethanes (TTHM)

Forms or is added in treatment

Above the legal limit

78ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 78 ppb, in 2026, below EPA’s legal limit of 80 ppb. Its highest single sample was 102 ppb. That was also the latest year on file. EPA judges this limit at each sampling point, and recorded violations for total trihalomethanes (TTHM) at this utility in 2024 and 2026. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 85.9 ppb, in 2014, and EPA recorded violations in 2014 and 2015.

What handles it

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

Above the health goal2

Arsenic

Comes from the source

Above the health goal

2.0ppb

Highest yearly average, 2020 to 2025

2025: not found

Averaged by year, the highest was 2.0 ppb, in 2021: below EPA’s legal limit of 10 ppb, but above its health goal of zero. In 2025, 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 0.87 ppb, in 2017.

What handles it

  • NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
  • NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”

Lead

Comes from pipes, often your own

Above the health goal

1.2ppb

90th percentile, 2026

In the latest period, 9 in 10 homes sampled were at or below 1.2 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

Nitrate

Comes from the source

Below EPA’s limits

6.5ppm

Highest sample; found in 2 of 10

2025: not found

The highest sample, in 2023, was 6.5 ppm, below EPA’s legal limit of 10 ppm. In 2025, the latest year on file, it wasn’t found in any of its three samples. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 2.4 ppm, in 2016.

What handles it

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

Fluoride

Forms or is added in treatment

Below EPA’s limits

2.3ppm

Highest yearly average, 2020 to 2025

2025, one sample: 1.9 ppm

Averaged by year, the highest was 2.3 ppm, in 2021, below EPA’s legal limit of 4.0 ppm. In 2025, the latest year on file, its one sample was 1.9 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.8 ppm, in 2018.

What handles it

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

29.6ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 29.6 ppb, in 2026, below EPA’s legal limit of 60 ppb. Its highest single sample was 31 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 40.6 ppb, in 2014.

What handles it

No certification claim covers this compound yet.

Chromium (total)

Comes from the source

Below EPA’s limits

2.0ppb

Highest yearly average, 2020 to 2025

2025: not found

Averaged by year, the highest was 2.0 ppb, in 2021, below EPA’s legal limit of 100 ppb. In 2025, the latest year on file, it wasn’t found in its one sample.

What handles it

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

    Claims: Trihalomethanes (TTHM) Reduction, Arsenic (Pentavalent)<=50 ppb Reduction, Lead Reduction

    For: Total trihalomethanes (TTHM), Arsenic, Lead

    Other certifiers’ wording: VOC Reduction; Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claims: Trihalomethanes (TTHM) Reduction, Arsenic (Pentavalent)<=50 ppb Reduction, Lead Reduction

    For: Total trihalomethanes (TTHM), Arsenic, Lead

    Other certifiers’ wording: Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

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 reverse osmosis systems, ranked

The best water filters for lead, ranked

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2026 to June 30, 20260.085 MG/LArchived
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2026 to March 31, 20260.082 MG/LArchived
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2024 to March 31, 20240.088 MG/LResolved
Groundwater RuleA significant problem found in a state inspection was not fixed on time.EPA: Failure To Address DeficiencyAug. 27, 2022—Resolved
Groundwater RuleA significant problem found in a state inspection was not fixed on time.EPA: Failure To Address DeficiencyAug. 27, 2022—Resolved
Lead and Copper RuleA required study or plan for corrosion control was not done on time.EPA: OCCT/SOWT Study/RecommendationJuly 1, 2017—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 164 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), arsenic, nitrate, fluoride, haloacetic acids (HAA5) and chromium (total) results here are Colorado’s own from 2020 on, with EPA’s national file for 2012 to 2019. Florissant WSD’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. 19, 2020 to Aug. 17, 2026.

Testing your own tap

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

  • El Paso County Health Department

    Colorado Springs, CO · about 26 miles

    Certified for bacteria, nitrate, minerals and other inorganics

  • GeoWater Services

    Evergreen, CO · about 54 miles

    Certified for bacteria

  • Pueblo Department of Public Health and Environment

    Pueblo, CO · about 54 miles

    Certified for bacteria

All 54 certified labs for Colorado

Sources

PWSID CO0160175. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Teller County

All Colorado utilities

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