Community Water System · PWS CA3610062
Running Springs Water District
Operator location Running Springs, California - 0% of 12 violations are health-based (lower-third health share (≤ 1%)); surface water source; 5,268 served per SDWIS.
- 5,268
- People served (this PWS) Larger third of systems
- 12
- EPA violations (this PWS) Lower third of systems
- 0
- Health-based (this PWS) Lower third by health-based share
- 10 PFAS
- UCMR5 (this PWS) Upper third of PFAS-detected systems
Running Springs Water District standing, low SDWIS violation third
0% of 12 recorded violations are health-based - lower-third health share (≤ 1%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 0% is lower-third health share (≤ 1%). UCMR5: upper-third PFAS panel (> 4 compounds). Population rank #7,481 of 29,740 among systems serving 500+.
The verdict
Running Springs Water District is in the lower third by violation count (12; lower-third violation load (≤ 21 violations)). A low count does not mean the system is unmonitored - monitoring and reporting violations still appear in SDWIS. Population served is large (5,268; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is only 0% - almost all of this trail is monitoring or reporting. UCMR5 detected 10 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- #7,481 of 29,740
- Population · /systems
- #630 of 1,701
- Population · CA
- 12
- Total EPA violations on record
- 0%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
10 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Based on EPA SDWIS violation history and UCMR5 PFAS testing only, not water taste, odor, infrastructure age, or contaminants outside the federally tracked set.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 3,009
- County
- San Bernardino
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 10
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 4 | 2024 |
| TTHM | MR | 4 | 2024 |
| Nitrate | MR | 2 | 2016 |
Violation Count vs. the National Corpus
Running Springs Water District has 12 recorded EPA violations, 21% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 78% carry more. 0% of this system's own violations are health-based (0 of 12), and it ranks #7,481 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
12 Among the lowest violation counts fewer violations than 78% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
How many violations vs. how serious, among peer systems
Running Springs Water District plotted against 29 peer public water systems (500+ people served), by total violation count (x) and the share of those violations that are health-based (y). The crosshair sits at this sample's own median on each axis. A high violation count does not automatically mean a serious record: most monitoring and reporting violations are minor, not health-based.
Violation volume vs. health-based share
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 44 of 609 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHxS | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDoA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 7/29/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHxA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFEESA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFUnA | 7/29/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| HFPO-DA | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 7/29/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 7/29/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| NMeFOSAA | 7/29/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTrDA | 7/29/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFHpS | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NEtFOSAA | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFEESA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 7/29/2025 | 4.20 ppt | 3.00 ppt | Detected |
| PFDoA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 7/29/2025 | 5.90 ppt | 3.00 ppt | Detected |
| NFDHA | 7/29/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| 8:2 FTS | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpS | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 7/29/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| HFPO-DA | 7/29/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 7/29/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
Health-based violations on Running Springs Water District
0 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for CA3610062.
Sources: EPA SDWIS · California State Water Resources Control Board, Division of Drinking Water
Nationwide peers
12 violations · 5,268 served: nearest cross-state SDWIS matches.
Cross-state systems with similarly light violation ledgers
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Running Springs Water District
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in California compares on the same EPA violation measures. California systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.
Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.