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Tap water quality report

Carter Lake Filter Plant

EPA monitoring tested this supplier for 74 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

74
contaminants tested
12
detected
11
people served
0
health-based violations
Colorado rankingsLead in ColoradoPFAS in Colorado
Water source
Surface water
Ownership
Local government
Counties served
Larimer

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
16
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2025-01-01
MR Monitoring Resolved 2025-01-01
MR Monitoring Resolved 2025-01-01
MR Monitoring Resolved 2025-01-01
Other Monitoring Resolved 2018-04-28
Other Monitoring Resolved 2018-04-28
MR Monitoring Resolved 2012-01-01 → 2012-01-31
MR Monitoring Resolved 2012-01-01 → 2012-01-31
MR Monitoring Resolved 2012-01-01 → 2012-01-31
MR Monitoring Resolved 2012-01-01 → 2012-01-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chlorite
430 µg/L 43%
of the EPA limit 1000 µg/L
 94/96 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 28/28 LCR 2025
TTHM
46.7 µg/L 58%
of the EPA limit 80 µg/L
 15/15 SYR4 2012
Total Haloacetic Acids (HAA5)
84.5 µg/L 141%
of the EPA limit, in the worst sample — 60 µg/L
 15/15 SYR4 2012
Fluoride
730 µg/L 18%
of the EPA limit 4000 µg/L
 10/10 SYR4 2012–2019
Barium
19 µg/L 1%
of the EPA limit 2000 µg/L
 8/8 SYR4 2012–2019
Nitrate
59 µg/L 0.6%
of the EPA limit 10000 µg/L
 2/14 SYR4 2012–2019
Bromodichloromethane
1.9 µg/L
No EPA limit set
 1/1 SYR4 2012
Chloroform
18.9 µg/L
No EPA limit set
 1/1 SYR4 2012
Combined Radium (-226 And -228)
1.1 pCi/L 22%
of the EPA limit 5 pCi/L
 1/1 SYR4 2019
Gross Alpha, Excl. Radon And U
1.8 pCi/L 12%
of the EPA limit 15 pCi/L
 1/1 SYR4 2019
Thallium, Total
1.7 µg/L 85%
of the EPA limit 2 µg/L
 1/8 SYR4 2012–2019
62 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WHITTET II, RICHARD H
Phone
970-532-3624
Email
RICK@CLFPWATER.ORG

Frequently asked questions about Carter Lake Filter Plant

Is Carter Lake Filter Plant tap water safe to drink?

EPA monitoring detected 12 contaminants in Carter Lake Filter Plant's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Carter Lake Filter Plant's water?

EPA monitoring detected Chlorite, Lead, TTHM, Total Haloacetic Acids (HAA5), Fluoride, and others. The full list with the level and data source for each is above.

How many people does Carter Lake Filter Plant serve?

Carter Lake Filter Plant reports serving 11 people in Colorado, per its EPA record.

Has Carter Lake Filter Plant had any water quality violations?

The EPA has 16 violations on file for Carter Lake Filter Plant, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.