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Community Water System · PWS MA1255000

South Royalston Improvement Corp

Royalston, Massachusetts 01368 - drinking water served from groundwater sources to 275 people, tracked in EPA SDWIS and UCMR5.

275
People served
126
EPA violations
22
Health-based
Untested
UCMR5 result

The verdict

EPA records 126 drinking-water violations at South Royalston Improvement Corp, 17% of them health-based - above the Massachusetts per-system average.

126
Total EPA violations on record
17%
Health-based (MCL / treatment failure)
275
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: South Royalston Improvement Corp

South Royalston Improvement Corp is a private-owned community water system that delivers drinking water to 275 residents in Royalston, Massachusetts (Worcester County) through 57 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 126 total violations for this system , of which 22 (17%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 83 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 22 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Massachusetts, EPA tracks 1,599 public water systems serving 10,332,845 people, with 73,886 cumulative violations and 7,389 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 46.2 violations. Statewide, 148 of 263 UCMR5-tested systems have reported PFAS detections (56.3%).

South Royalston Improvement Corp's 126 violations sit above the Massachusetts average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
275
Total Violations
126
Health-Based Violations
22
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
57
County
Worcester
School/Daycare
No
MCL Violations
22
Monitoring Violations
83
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 22 2014
Revised Total Coliform Rule MON 14 2021
Coliform (TCR) MR 12 2014
Nitrate MR 7 2013
Trichloroethylene MR 2 2011
1,1,1-Trichloroethane MR 2 2011
CHLOROBENZENE MR 2 2011
o-Dichlorobenzene MR 2 2011
trans-1,2-Dichloroethylene MR 2 2011
Ethylbenzene MR 2 2011
Styrene MR 2 2011
Xylenes, Total MR 2 2011
Carbon tetrachloride MR 2 2011
1,2,4-Trichlorobenzene MR 2 2011
DICHLOROMETHANE MR 2 2011
1,1-Dichloroethylene MR 2 2011
Lead and Copper Rule MR 2 2011
1,2-Dichloroethane MR 2 2011
p-Dichlorobenzene MR 2 2011
Toluene MR 2 2011
Tetrachloroethylene MR 2 2011
1,1,2-Trichloroethane MR 2 2011
Vinyl chloride MR 2 2011
1,2-Dichloropropane MR 2 2011
Benzene MR 2 2011
cis-1,2-Dichloroethylene MR 2 2011
2,4,5-TP MR 1 1991
2,4-D MR 1 1991
Toxaphene MR 1 1991
Methoxychlor MR 1 1991

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for South Royalston Improvement Corp.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID MA1255000 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Massachusetts Drinking Water Authority

MassDEP, Drinking Water Program is the primacy agency that licenses and inspects South Royalston Improvement Corp under EPA-delegated authority.

Open MA regulator portal

Source: MassDEP, Drinking Water Program

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2021 Revised Total Coliform Rule MON 14 SDWIS / MA1255000 / 8000
2014 Coliform (TCR) MCL 22 SDWIS / MA1255000 / 3100
2014 Coliform (TCR) MR 12 SDWIS / MA1255000 / 3100
2013 Nitrate MR 7 SDWIS / MA1255000 / 1040
2011 Trichloroethylene MR 2 SDWIS / MA1255000 / 2984
2011 1,1,1-Trichloroethane MR 2 SDWIS / MA1255000 / 2981
2011 CHLOROBENZENE MR 2 SDWIS / MA1255000 / 2989
2011 o-Dichlorobenzene MR 2 SDWIS / MA1255000 / 2968
2011 trans-1,2-Dichloroethylene MR 2 SDWIS / MA1255000 / 2979
2011 Ethylbenzene MR 2 SDWIS / MA1255000 / 2992
2011 Styrene MR 2 SDWIS / MA1255000 / 2996
2011 Xylenes, Total MR 2 SDWIS / MA1255000 / 2955
2011 Carbon tetrachloride MR 2 SDWIS / MA1255000 / 2982
2011 1,2,4-Trichlorobenzene MR 2 SDWIS / MA1255000 / 2378
2011 DICHLOROMETHANE MR 2 SDWIS / MA1255000 / 2964

How South Royalston Improvement Corp Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric South Royalston Improvement Corp Massachusetts avg Federal benchmark
Total violations 126 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 22 4.6 Indicates a contaminant exceeded a federal MCL
PFAS detection None 56.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 275 6,462 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,599 regulated public water systems in Massachusetts.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is South Royalston Improvement Corp water safe to drink? ▼
South Royalston Improvement Corp (PWS ID: MA1255000) has 126 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 275 people using Groundwater sources.
How many people does South Royalston Improvement Corp serve? ▼
South Royalston Improvement Corp serves 275 people in Royalston, Massachusetts. It is a Private-owned system using Groundwater water sources with 57 service connections.
What type of violations does South Royalston Improvement Corp have? ▼
South Royalston Improvement Corp has 126 total violations: 22 health-based violations (MCL exceedances or treatment failures), 83 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in South Royalston Improvement Corp water? ▼
No PFAS testing data is available for South Royalston Improvement Corp under the EPA's UCMR5 monitoring program.
What water source does South Royalston Improvement Corp use? ▼
South Royalston Improvement Corp uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.