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Pacheco Trailer Park

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

Serves
36 people
Connections
18
Water source
Groundwater
Based in
Monte Vista, CO
County
Rio Grande
Owner
Private
Hardness
Soft

The short answer

1 result is above EPA’s legal limit. The worst: Arsenic, above the legal limit. 8 health-based violations since 2016.

What handles it

What was found

Arsenic, nitrate, chromium (total), fluoride, haloacetic acids (HAA5), total trihalomethanes (TTHM) and uranium: Colorado’s own results, samples taken from March 12, 2025 to Aug. 19, 2026.

Above the legal limit1

Arsenic

Comes from the source

Above the legal limit

9.6ppb

Highest yearly average, 2025 to 2026

2026 average: 5.5 ppb

Averaged by year, the highest was 9.6 ppb, in 2025: below EPA’s legal limit of 10 ppb, but above its health goal of zero. Its highest single sample was 15 ppb. In 2026, the latest year on file, its four samples averaged 5.5 ppb. EPA judges this limit at each sampling point, and recorded violations for arsenic at this utility in 2025 and 2026.

What handles it

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

Below EPA’s limits3

Nitrate

Comes from the source

Below EPA’s limits

0.4ppm

Highest sample; found in 4 of 6

2025 average: 0.15 ppm

The highest sample, in 2025, was 0.4 ppm, below EPA’s legal limit of 10 ppm. That is the only year on file, and its six samples averaged 0.15 ppm.

What handles it

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

Chromium (total)

Comes from the source

Below EPA’s limits

3.2ppb

Highest yearly average, 2025

Averaged by year, the highest was 3.2 ppb, in 2025, below EPA’s legal limit of 100 ppb. Its highest single sample was 7.3 ppb. That is the only year on file.

What handles it

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.047ppm

Highest yearly average, 2025

Averaged by year, the highest was 0.047 ppm, in 2025, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.14 ppm. That is the only year on file.

What handles it

3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Haloacetic acids (HAA5)
  • Total trihalomethanes (TTHM)
  • 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.”

  • NSF/ANSI 53

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

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

  • NSF/ANSI 58

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

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

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

Compare five-year costs

The best reverse osmosis systems, ranked

Hardness

Soft, typically 51 mg/L (3 grains per gallon), across 3 sampling points, in 2025.

Hardness is calcium and magnesium. EPA sets no limit for it: it shows up as scale on fixtures and in water heaters, and as soap that won’t lather. USGS calls water above 60 mg/L moderately hard, above 120 hard and above 180 very hard.

Softeners compared at 3 grains per gallon, salt includedSoftener or salt-free conditioner?Colorado water hardness, utility by utility

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2026 to March 31, 20260.011 MG/LArchived
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2025 to Dec. 31, 20250.012 MG/LArchived
Revised Total Coliform RuleFixes required after coliform results were not made on time.EPA: Treatment Technique, Corrective/Expedited Actions (RTCR)Sept. 1, 2025—Addressed
Groundwater RuleA significant problem found in a state inspection was not fixed on time.EPA: Failure To Address DeficiencyJuly 19, 2025—Resolved
Lead and Copper Rule RevisionsThe required inventory of lead service lines was not completed or submitted on time.EPA: LSL InventoryJuly 2, 2025—Resolved
ArsenicThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2025 to Sept. 30, 20250.012 MG/LArchived
Stage 1 Disinfectants and Disinfection Byproducts RuleTreatment was not run by a certified operator as required.EPA: Treatment Technique No Certif. OperatorMay 1, 2025—Resolved
Stage 1 Disinfectants and Disinfection Byproducts RuleTreatment was not run by a certified operator as required.EPA: Treatment Technique No Certif. OperatorNov. 1, 2024—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 930 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Arsenic, nitrate, chromium (total), fluoride, haloacetic acids (HAA5), total trihalomethanes (TTHM) and uranium results here are Colorado’s own from 2025 on, with EPA’s national file for 2012 to 2019. Pacheco Trailer Park’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 March 12, 2025 to Aug. 19, 2026.

Testing your own tap

Pacheco Trailer Park’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.

No lab Colorado certifies is within 75 miles of the area Pacheco Trailer Park serves on the state’s list. Some take samples by mail; the state’s page lists them all.

All 54 certified labs for Colorado

Sources

PWSID CO0153400. Rebuilt from EPA data on Oct. 18, 2026.

Also in Rio Grande County

All Colorado utilities

What to do next