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City of Mt. Shasta

Published drinking-water records and contacts for City of Mt. Shasta. System CA4710008. Review sources and dates; not a real-time water assessment.

System ID
CA4710008
State or territory
CA
Published population served
3642
System type (source code)
CWS

Published records and dates

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
SubstancePublished resultReporting limitSample dateSampling location
11Cl-PF3OUdS< 0.005 µg/L0.005 µg/L2024-08-12Well 2 / SSW201
4:2 FTS< 0.003 µg/L0.003 µg/L2024-08-12Well 1 / SSW101
6:2 FTS< 0.005 µg/L0.005 µg/L2024-08-12Well 1 / SSW101
8:2 FTS< 0.005 µg/L0.005 µg/L2024-08-12Well 1 / SSW101
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2024-08-12Well 2 / SSW201
ADONA< 0.003 µg/L0.003 µg/L2024-08-12Well 2 / SSW201
HFPO-DA< 0.005 µg/L0.005 µg/L2024-08-12Well 2 / SSW201
NEtFOSAA< 0.005 µg/L0.005 µg/L2024-08-12Cold Springs / SSCS01
NFDHA< 0.02 µg/L0.02 µg/L2024-08-12Well 1 / SSW101
NMeFOSAA< 0.006 µg/L0.006 µg/L2024-08-12Cold Springs / SSCS01
PFBA< 0.005 µg/L0.005 µg/L2024-08-12Well 1 / SSW101
PFBS< 0.003 µg/L0.003 µg/L2024-08-12Cold Springs / SSCS01
PFDA< 0.003 µg/L0.003 µg/L2024-08-12Well 1 / SSW101
PFDoA< 0.003 µg/L0.003 µg/L2024-08-12Well 1 / SSW101
PFEESA< 0.003 µg/L0.003 µg/L2024-08-12Well 2 / SSW201
PFHpA< 0.003 µg/L0.003 µg/L2024-08-12Well 2 / SSW201
PFHpS< 0.003 µg/L0.003 µg/L2024-08-12Well 1 / SSW101
PFHxA< 0.003 µg/L0.003 µg/L2024-08-12Well 2 / SSW201
PFHxS< 0.003 µg/L0.003 µg/L2024-08-12Well 1 / SSW101
PFMBA< 0.003 µg/L0.003 µg/L2024-08-12Well 2 / SSW201
PFMPA< 0.004 µg/L0.004 µg/L2024-08-12Well 2 / SSW201
PFNA< 0.004 µg/L0.004 µg/L2024-08-12Cold Springs / SSCS01
PFOA< 0.004 µg/L0.004 µg/L2024-08-12Cold Springs / SSCS01
PFOS< 0.004 µg/L0.004 µg/L2024-08-12Well 2 / SSW201
PFPeA< 0.003 µg/L0.003 µg/L2024-08-12Cold Springs / SSCS01
PFPeS< 0.004 µg/L0.004 µg/L2024-08-12Well 2 / SSW201
PFTA< 0.008 µg/L0.008 µg/L2024-08-12Cold Springs / SSCS01
PFTrDA< 0.007 µg/L0.007 µg/L2024-08-12Well 2 / SSW201
PFUnA< 0.002 µg/L0.002 µg/L2024-08-12Well 1 / SSW101
lithium< 9 µg/L9 µg/L2024-08-12Well 1 / SSW101

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
SubstancePublished 90th percentileMonitoring periodSource quarter
Lead (PB90) 0.00136 mg/L2022-01-01 – 2024-12-312026Q3
Lead (PB90) 0 mg/L2019-01-01 – 2021-12-312026Q3
Lead (PB90) 0 mg/L2016-01-01 – 2016-12-312026Q3
Lead (PB90) 0 mg/L2016-01-01 – 2016-06-302026Q3
Lead (PB90) 0 mg/L2013-01-01 – 2015-12-312026Q3
Copper (CU90) 1.51 mg/L2013-01-01 – 2015-12-312026Q3
Lead (PB90) 0 mg/L2010-01-01 – 2012-12-312026Q3
Lead (PB90) 0 mg/L2007-01-01 – 2009-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
CHROMIUM, HEX0.11 UG/L2026-06-30SPRING SOURCE / California DDW laboratory results
CHROMIUM, HEX0.32 UG/L2026-06-30WELL 01 (ARTESIAN) / California DDW laboratory results
NITRATE0.15 MG/L2026-06-30HIGH SCHOOL WELL 02 / California DDW laboratory results
NITRATE0.14 MG/L2026-06-30WELL 01 (ARTESIAN) / California DDW laboratory results
NITRATE< 0.100000000 MG/L2026-06-30SPRING SOURCE / California DDW laboratory results
PERFLUORODECANOIC ACID (PFDA)< 2.000000000 NG/L2026-04-03SPRING SOURCE / California DDW laboratory results
PERFLUOROHEPTANOIC ACID (PFHPA)< 2.000000000 NG/L2026-04-03SPRING SOURCE / California DDW laboratory results
9CL-PF3ONS< 2.000000000 NG/L2026-04-03SPRING SOURCE / California DDW laboratory results
PERFLUOROBUTANE SULFONIC ACID (PFBS)< 2.000000000 NG/L2026-04-03SPRING SOURCE / California DDW laboratory results
PERFLUOROHEXANE SULFONIC ACID (PFHxS)< 2.000000000 NG/L2026-04-03SPRING SOURCE / California DDW laboratory results
PERFLUOROCTANOIC ACID (PFOA)< 2.000000000 NG/L2026-04-03SPRING SOURCE / California DDW laboratory results
PERFLUOROHEXANE SULFONIC ACID 4:2 FTS< 2.000000000 NG/L2026-04-03SPRING SOURCE / California DDW laboratory results

State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.

Download state records with source notes (CSV)

Published compliance history

6 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / recordPeriodRecorded statusHealth-based (EPA classification)Source quarter
Lead and Copper Rule Revisions / LSL Reporting2024-10-17 – —UnaddressedNo2026Q3
Lead and Copper Rule Revisions / LSL Inventory2024-10-17 – —UnaddressedYes2026Q3
Revised Total Coliform Rule / Treatment Technique, Level 1 Assessment (RTCR)2019-09-01 – —ResolvedYes2026Q3
Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR)2017-07-01 – 2017-07-31ResolvedYes2026Q3
Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR)2017-07-01 – 2017-07-31ResolvedYes2026Q3
Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR)2017-06-01 – 2017-06-30ResolvedYes2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

Administrative contact (EPA filing)

Kellogg, Ken: 530-926-7526

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records