Drinking water quality · 2024
· Verified
What's in City of Murrieta, CA tap water
30 contaminants were measured in the City of Murrieta, CA water system's 2024 annual report. Each is shown below against its federal limit — 3 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 30
- Over federal limit
- 3
- Approaching the limit
- 1
- Worst contaminant
- Turbidity
- Service area
- CA
97.0× the limit
state-level CCR
At or above the federal limit
Approaching the limit (≥ 80%)
PFAS — EPA UCMR5 (2023–2025)
2 PFAS compounds above EPA limits in City of Murrieta, CA
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
PFOS (Perfluorooctane sulfonic acid)
● Over EPA limit (1.4×)Measured 5.7 ng/LEPA limit 4 ng/LSample year 2025Samples 1 detect / 1
PFOA (Perfluorooctanoic acid)
● Over EPA limit (1.4×)Measured 5.5 ng/LEPA limit 4 ng/LSample year 2025Samples 1 detect / 1
PFHxS (Perfluorohexane sulfonic acid)
● Below limitMeasured 4.1 ng/LEPA limit 10 ng/LSample year 2025Samples 1 detect / 1
PWSID CA3310036 · Source: EPA UCMR5. Limits per EPA's April 2024 PFAS National Primary Drinking Water Regulation. PFAS values reported in nanograms per liter (ng/L) — note that 1 ng/L = 1 part per trillion.
Where your water comes from · EPA SDWIS
City of Murrieta, CA's drinking water comes from ground water, drawn from 2 sources.
Source
2ground water
- NEW CLAY WELL
- NORTH
Treatment
2treatment plants
- NORTH WELL 2 - WATER TREATMENT PLANT
- NEW CLAY WELL - TREATED XCLD
Distribution
0storage units
Also buys water from EASTERN MUNICIPAL WD, ELSINORE VALLEY MWD.
Source: EPA SDWIS facilities inventory. Methodology.
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Maximum contaminant level exceededHealth-based2 violations on record · most recent Jan 2006resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 97 NTUAveragePerris Filtration Plant | None set | At or above the limit |
+By source (11)— Perris Filtration Plant, East Valley, EMWD's Entire Distribution System +8 more
| |||
| ColorA measure of visible tint in the water. | 2AverageMills Filtration Plant | None set | Detected — no federal limit |
+By source (10)— EMWD's Entire Distribution System, East Valley, Hemet Filtration Plant +7 more
| |||
| OdorA measure of detectable smell in the water. | 1–2Reported levelNorth Perris | None set | Detected — no federal limit |
+By source (3)— North Perris, EMWD's Entire Distribution System, East Valley
| |||
| pHA measure of how acidic or basic the water is. | 6.3–8.9Reported levelEMWD's Entire Distribution System | None set | Detected — no federal limit |
+By source (2)— EMWD's Entire Distribution System, East Valley
| |||
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 1120 uS/cmAveragePerris Valley Wells M | None set | Detected — no federal limit |
+By source (8)— Perris Filtration Plant, Perris Valley Wells M, East Valley Wells +5 more
| |||
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 826 mg/LAveragePerris Valley Wells M | None set | Detected — no federal limit |
+By source (8)— Perris Valley Wells M, Perris Filtration Plant, East Valley Wells +5 more
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 0–19 ug/LReported levelMills | 0.1 ug/LPublic health goal | At or above the limit |
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 2.7–70 ug/LReported levelEMWD's Entire Distribution System | None set | Approaching the limit |
+By source (4)— EMWD's Entire Distribution System, City of Perris, East Valley +1 more
| |||
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 0–28 ug/LReported levelEMWD's Entire Distribution System | None set | Within the limit |
+By source (4)— EMWD's Entire Distribution System, East Valley, City of Perris +1 more
| |||
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | 2.3 ug/LAveragePerris Valley Wells M | None set | Detected — no federal limit |
+By source (8)— Perris Valley Wells M, Desalination Complex L, Mills Filtration Plant +5 more
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 0–4.3 mg/LReported levelEMWD's Entire Distribution System | 4 mg/LMCL | At or above the limit |
+By source (4)— EMWD's Entire Distribution System, East Valley, City of Perris +1 more
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 5.2 pCi/LAveragePerris Valley Wells M | 15 pCi/LMCL | Within the limit |
+By source (8)— East Valley Wells, Perris Valley Wells M, Desalination Complex L +5 more
| |||
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0.48 pCi/LAverageNorth Perris Wells | 5 pCi/LMCL | Within the limit |
+By source (8)— North Perris Wells, Mills Filtration Plant, Perris Valley Wells M +5 more
| |||
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 18.6 pCi/LAverageHemet Filtration Plant | None set | Detected — no federal limit |
+By source (7)— East Valley Wells, Hemet Filtration Plant, Desalination Complex L +4 more
| |||
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 2.4 pCi/LAverageEast Valley Wells | 20 pCi/LMCL | Detected — no federal limit |
+By source (8)— East Valley Wells, Skinner Filtration Plant, North Perris Wells +5 more
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 2.5 ug/LAveragePerris Valley Wells M | None set | Within the limit |
+By source (8)— East Valley Wells, Perris Valley Wells M, Hemet Filtration Plant +5 more
| |||
| BariumA metal from erosion of natural deposits and industrial discharge. | 209 ug/LAveragePerris Valley Wells M | None set | Within the limit |
+By source (8)— Perris Valley Wells M, East Valley Wells, North Perris Wells +5 more
| |||
| CopperA metal that enters water from corroding household plumbing. | 90 ug/LReported levelMills | None set | Within the limit |
| SeleniumA trace element from natural deposits and industrial discharge. | Not detected ug/LAverageDesalination Complex L | None set | Within the limit |
+By source (8)— East Valley Wells, Desalination Complex L, Mills Filtration Plant +5 more
| |||
| AluminumA common element sometimes used as a treatment coagulant. | 74 ug/LAverageSkinner Filtration Plant | None set | Detected — no federal limit |
+By source (8)— Skinner Filtration Plant, Mills Filtration Plant, Desalination Complex L +5 more
| |||
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 1.2 ug/LAveragePerris Valley Wells M | None set | Detected — no federal limit |
+By source (8)— Perris Valley Wells M, North Perris Wells, Desalination Complex L +5 more
| |||
| IronA naturally occurring metal common in groundwater. | Not detected ug/LAverageDesalination Complex L | None set | Detected — no federal limit |
+By source (8)— Desalination Complex L, East Valley Wells, Mills Filtration Plant +5 more
| |||
| ManganeseA naturally occurring metal from soil and rock. | Not detected ug/LAverageMills Filtration Plant | None set | Detected — no federal limit |
+By source (8)— Desalination Complex L, Mills Filtration Plant, North Perris Wells +5 more
| |||
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.7 mg/LAverageMills Filtration Plant | 4 mg/LMCL | Within the limit |
+By source (8)— Mills Filtration Plant, Skinner Filtration Plant, North Perris Wells +5 more
| |||
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 1.7 mg/LAverageDesalination Complex L | 10 mg/LMCL | Within the limit |
+By source (8)— Perris Valley Wells M, East Valley Wells, Desalination Complex L +5 more
| |||
| NitriteA compound from fertilizer runoff, sewage, and erosion of natural deposits. | Not detected mg/LAverageDesalination Complex L | 1 mg/LMCL | Within the limit |
+By source (8)— Perris Filtration Plant, Hemet Filtration Plant, Desalination Complex L +5 more
| |||
| ChlorideA naturally occurring salt compound. | 233 mg/LAveragePerris Valley Wells M | None set | Detected — no federal limit |
+By source (8)— Perris Valley Wells M, Desalination Complex L, Perris Filtration Plant +5 more
| |||
| SulfateA naturally occurring mineral from rock and soil. | 199 mg/LAverageSkinner Filtration Plant | None set | Detected — no federal limit |
+By source (8)— Perris Filtration Plant, Skinner Filtration Plant, East Valley Wells +5 more
| |||
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0Reported levelMills | 0MCLG | None detected |
+By source (4)— EMWD's Entire Distribution System, East Valley, North Perris +1 more
| |||
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 5Reported levelEMWD's Entire Distribution System | 0MCLG | Detected — no federal limit |
+By source (4)— EMWD's Entire Distribution System, East Valley, North Perris +1 more
| |||
Source: City of Murrieta, CA's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.
People also ask about City of Murrieta, CA's water
+Is City of Murrieta, CA tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the City of Murrieta, CA water utility lists 3 contaminants at or above the federal limit: Turbidity, Bromate, and Chlorine Total. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in City of Murrieta, CA tap water?
30 contaminants were measured in City of Murrieta, CA's 2024 Consumer Confidence Report, spanning metals, physical & aggregate, and inorganic chemicals. 10 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in City of Murrieta, CA tap water?
3 contaminants in City of Murrieta, CA's 2024 report sit at or above the federal limit: Turbidity (97.0× the limit); Bromate (1.9× the limit); Chlorine Total (1.1× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in City of Murrieta, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Turbidity, at 97.0× the federal threshold. It belongs to the physical & aggregate family of contaminants.
+Are any contaminants in City of Murrieta, CA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: TTHM. Approaching means measured but not in violation — a margin that can close quickly if conditions change.
+Where does the data on this page come from?
Every value is transcribed from City of Murrieta, CA's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is City of Murrieta, CA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.
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