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Tap water quality report

Upper Lake Hardisty

EPA monitoring tested this supplier for 69 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
5
detected
98
people served
3
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Native American

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.

3
health-based violations
75
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1992-05-01 → 1992-05-31
MCL Health-based Resolved 1992-04-01 → 1992-04-30
MCL Health-based Resolved 1992-03-01 → 1992-03-31
MR Monitoring Resolved 2022-01-01 → 2022-03-31
MR Monitoring Resolved 2012-03-01 → 2012-03-31
MR Monitoring Resolved 2011-03-01 → 2011-03-31
MR Monitoring Resolved 2009-12-01 → 2009-12-31
MR Monitoring Resolved 2007-09-01 → 2007-09-30
MR Monitoring Resolved 2004-08-01 → 2004-08-31
MR Monitoring Resolved 2004-03-01 → 2004-03-31

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
2100 µg/L 21%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2025
TTHM
3.9755 µg/L 5%
of the EPA limit 80 µg/L
worst single sample: 4.12 µg/L
2/3 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
3.295 µg/L 5.5%
of the EPA limit 60 µg/L
worst single sample: 3.4 µg/L
2/3 SYR4 2013–2019
Barium
130 µg/L 6.5%
of the EPA limit 2000 µg/L
 1/1 SYR4 2017
64 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Danielle Cirelli
Phone
7072750737
Email
[email protected]

Frequently asked questions about Upper Lake Hardisty

Is Upper Lake Hardisty tap water safe to drink?

EPA monitoring detected 5 contaminants in Upper Lake Hardisty'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 Upper Lake Hardisty's water?

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

How many people does Upper Lake Hardisty serve?

Upper Lake Hardisty reports serving 98 people in California, per its EPA record.

Has Upper Lake Hardisty had any water quality violations?

The EPA has 75 violations on file for Upper Lake Hardisty, of which 3 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.