Tapcensus

Conifer High School

Non-Transient non-community system in Jefferson County, Colorado, serving 2,350 people from surface water. 2 rules violated in the past three years. Owned by local government.

People served 2,350 surface water
Rules violated, past 3 years 2 one rule can carry several violations
Unresolved 0 rules currently in violation, EPA data updated Oct 7, 2026
Quarters with violations 4 of the last 12 quarters

Quarterly compliance history

VQ3
2023
VQ4
2023
SQ1
2024
SQ2
2024
–Q3
2024
–Q4
2024
–Q1
2025
–Q2
2025
–Q3
2025
–Q4
2025
–Q1
2026
–Q2
2026
–Q3
2026
–No violation identified VViolation identified SSerious violator (EPA enforcement priority) UUndetermined Oldest quarter on the left. Quarters 1 to 12 are the twelve most recent official quarters at EPA's last data refresh; the 13th is the quarter in progress at that refresh, which EPA reports as undetermined.

Rules violated in the past three years

Jul to Sep 2023 to Jul to Sep 2026

Stage 2 Disinfectants and Disinfection Byproducts Rule

Maximum Contaminant Level ViolationMonitoring and Reporting Health-based

5 violations, Jul 2023 to Aug 2024 · Total Haloacetic Acids (HAA5) · 4 measured values
EPA rule code 220 · 5 violations recorded, 4 health-based

Maximum Contaminant Level Violation, health-based: 4 violations, Jul 2023 to Aug 2024. A sample exceeded the maximum contaminant level EPA allows in drinking water.

Monitoring and Reporting: 1 violation, Mar 2024 to Mar 2024. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

Measured
Total Haloacetic Acids (HAA5) 0.06488 MG/L

Limit 0.06 MG/L · Apr to Jun 2024

Total Haloacetic Acids (HAA5) 0.0682 MG/L

Limit 0.06 MG/L · Jan to Mar 2024

Total Haloacetic Acids (HAA5) 0.065 MG/L

Limit 0.06 MG/L · Oct to Dec 2023

Total Haloacetic Acids (HAA5) 0.066 MG/L

Limit 0.06 MG/L · Jul to Sep 2023

Contaminant on the record: Total Haloacetic Acids (HAA5).

Total Haloacetic Acids (HAA5), health effects: Dichloroacetic acid is a probable human carcinogen (Group B2). Long-term exposure to trichloroacetic acid may also increase cancer risk. Animal studies show liver, kidney, and reproductive effects at high doses. Limit: 0.060 mg/L (60 ppb) locational running annual average (LRAA)

Public Notice Rule and Revised PN Rule

Other Violation

2 violations, Oct 2023 to Apr 2024 · Public Notification Rule
EPA rule code 410 · 2 violations recorded

Other Violation: 2 violations, Oct 2023 to Apr 2024. A requirement other than monitoring, reporting, or a contaminant limit, such as public notice or the annual water quality report.

Contaminant on the record: Public Notification Rule.

Lead and copper at the tap

The 90th percentile of the tap samples the system collected in its latest monitoring period, against EPA's action level. Levels vary between homes.

Lead 0.001 mg/L

Action level 0.015 mg/L · Jan to Jun 2026

About this data

Rules violated and the list above come from EPA's SDWIS violation records, one row per violation and contaminant, grouped by the rule each row belongs to. A violation counts when its non-compliance period ended on or after Jul 1, 2023, the start of the thirteen quarters ECHO's three-year figures cover, or is still open; it is unresolved when it was still open at EPA's data refresh on Oct 7, 2026. EPA's rule code 500, "Not Regulated", is left out, as in ECHO's counts. Each rule's violation count is EPA's, and one rule can carry several: a missed monitoring round for a group of contaminants is one violation per contaminant and period. Category names are EPA's violation categories.

ECHO's own summary count of rules violated agrees with this grouping for 98.8% of active systems nationally, and its count of rules being violated for 98.7%; where they differ, the figures here follow the rows listed.

A measured value shown with a rule is the sample result EPA recorded with that violation (SDWIS viol_measure), against the limit EPA recorded on the same row (state_mcl), both in EPA's unit as written; violations without a recorded value, such as missed monitoring, show none. Other measured contaminant levels are not part of this record; each system publishes them in its annual Consumer Confidence Report.

Lead and copper are the newest 90th-percentile results in EPA's SDWA data download (LCR_SAMPLES, codes PB90 and CU90): for each monitoring period a system reports the 90th-percentile value of its tap samples, which EPA compares with its action level of 0.015 mg/L for lead and 1.3 mg/L for copper (40 CFR 141.80). A result is not a measurement of any one tap.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Colorado records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.